Switch to Federated Plugin layout

CHANGELOG.md

@@ -1,25 +0,0 @@
-## 0.0.6
-
-**WIP...**
-
-## 0.0.5
-
-* New API
-* Add digest support
-* Clean platform specific code base
-## 0.0.4
-
-* Improve AES
-
-## 0.0.3
-
-* Add PBKDF2 support
-* Add exceptions
-* Improve documentation
-## 0.0.2
-
-* Add different key size support
-* Improve performances
-## 0.0.1
-
-* First AES cross-platform encryption & decryption implementation.

README.md

@@ -1,170 +0,0 @@
-# NativeCrypto for Flutter
-
-![NativeCrypto Logo](/assets/native_crypto.png)
----
-
-Fast and powerful cryptographic functions thanks to **javax.crypto** and **CommonCrypto**.
-
-## 📝 Table of Contents
-
-- [About](#about)
-- [Getting Started](#getting_started)
-- [Example](#example)
-- [Usage](#usage)
-- [Built Using](#built_using)
-- [TODOS](#todos)
-- [Authors](#authors)
-
-## 🧐 About <a name = "about"></a>
-
-The goal of this plugin is to provide simple access to fast and powerful cryptographic functions by calling native libraries. So on **Android** the plugin uses *javax.crypto* and on **iOS** it uses *CommonCrypto*.
-
-I started this project because using **Pointy Castle** I faced big performance issues on smartphone. It's quite simple, an encryption of 1MB of data in AES256 on an Android device takes **20s** with Pointy Castle against **27ms** using NativeCrypto.
-
-![Pointy Castle Benchmark](/assets/benchmark_pointycastle.png)
-
-> We also notice on this benchmark that the AES encryption time does not even increase linearly with size.
-
-As for NativeCrypto, here is a benchmark realized on an Android device, Huawei P30 Pro.
-
-| Size (kB) | NativeCrypto **encryption** time (ms) |
-|-----------|---------------------------------------|
-| 1 mB | 27 ms
-| 2 mB | 43 ms
-| 3 mB | 78 ms
-| 4 mB | 93 ms
-| 5 mB | 100 ms
-| 10 mB | 229 ms
-| 50 mB | 779 ms
-
-> Less than 1s for 50 mB.
-
-In short, **NativeCrypto** is incomparable to **Pointy Castle** in terms of performance.
-
-## 🏁 Getting Started <a name = "getting_started"></a>
-
-
-
-
-
-### Prerequisites
-
-You'll need:
-
-- Flutter
-
-### Installing
-
-Add these lines in your **pubspec.yaml**:
-
-```yaml
-native_crypto:
-    git:
-        url: https://gogs.pointcheval.fr/hugo/native-crypto-flutter.git
-        ref: v0.0.x
-```
-
-> Replace "x" with the current version!
-
-Then in your code:
-
-```dart
-import 'package:native_crypto/native_crypto.dart';
-```
-
-## 🔍 Example <a name="example"></a>
-
-Look in **example/lib/** for an example app.
-
-## 🎈 Usage <a name="usage"></a>
-
-To derive a key with **PBKDF2**.
-
-```dart
-PBKDF2 _pbkdf2 = PBKDF2(keyLength: 32, iteration: 1000, hash: HashAlgorithm.SHA512);
-await _pbkdf2.derive(password: "password123", salt: 'salty');
-SecretKey key = _pbkdf2.key;
-```
-
-To generate a key, and create an **AES Cipher** instance.
-
-```dart
-AESCipher aes = await AESCipher.generate(
-  AESKeySize.bits256,
-  CipherParameters(
-    BlockCipherMode.CBC,
-    PlainTextPadding.PKCS5,
-  ),
-);
-```
-
-You can also generate key, then create **AES Cipher**.
-
-```dart
-SecretKey _key = await SecretKey.generate(256, CipherAlgorithm.AES);
-AESCipher aes = AESCipher(
-  _key,
-  CipherParameters(
-    BlockCipherMode.CBC,
-    PlainTextPadding.PKCS5,
-  ),
-);
-```
-
-Then you can encrypt/decrypt data with this cipher.
-
-```dart
-CipherText cipherText = await aes.encrypt(data);
-Uint8List plainText = await aes.decrypt(cipherText);
-```
-
-You can easely get encrypted bytes and IV from a CipherText
-
-```dart
-Uint8List bytes = cipherText.bytes;
-Uint8List iv = cipherText.iv;
-```
-
-To create a cipher text with custom data.
-
-```dart
-CipherText cipherText = AESCipherText(bytes, iv);
-```
-
-To create a hashed message
-
-```dart
-MessageDigest md = MessageDigest.getInstance("sha256");
-Uint8List hash = await md.digest(message);
-```
-
-## ⛏️ Built Using <a name = "built_using"></a>
-
-- [Dart](https://dart.dev)
-- [Flutter](https://flutter.dev) - Framework
-- [Kotlin](https://kotlinlang.org) - Android Specific code
-- [Swift](https://www.apple.com/fr/swift/) - iOS Specific code
-
-## 🚀 TODOS <a name = "todos">
-
-Here you can check major changes, roadmap and todos.
-
-Once the **BlowFish algorithm** is exposed on Android and iOS, I plan to deal with asymmetric cryptography with the implementation of a Key Encapsulation Mechanism.
-
-- [x] Add PBKDF2 support.
-- [x] Implement working cross platform AES encryption/decryption.
-- [x] Add Different key sizes support.
-- [x] Add exceptions.
-- [x] Clean platform specific code.
-- [x] Add digest.
-- [x] Rework exposed API.
-- [ ] Implement BlowFish.
-- [ ] Add KeyPair generation.
-- [ ] Add KEM.
-- [ ] Porting NativeCrypto to other platforms...
-
-You can contribute to this project.
-
-## ✍️ Authors <a name = "authors"></a>
-
-- [Hugo Pointcheval](https://github.com/hugo-pcl) - Idea & Initial work

android/.gitignore

@@ -1,8 +0,0 @@
-*.iml
-.gradle
-/local.properties
-/.idea/workspace.xml
-/.idea/libraries
-.DS_Store
-/build
-/captures

android/build.gradle

@@ -1,44 +0,0 @@
-group 'fr.pointcheval.native_crypto'
-version '1.0-SNAPSHOT'
-
-buildscript {
-    ext.kotlin_version = '1.3.50'
-    repositories {
-        google()
-        jcenter()
-    }
-
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
-rootProject.allprojects {
-    repositories {
-        google()
-        jcenter()
-    }
-}
-
-apply plugin: 'com.android.library'
-apply plugin: 'kotlin-android'
-
-android {
-    compileSdkVersion 29
-
-    sourceSets {
-        main.java.srcDirs += 'src/main/kotlin'
-    }
-    defaultConfig {
-        minSdkVersion 16
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-    }
-    lintOptions {
-        disable 'InvalidPackage'
-    }
-}
-
-dependencies {
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-}

android/settings.gradle

@@ -1 +0,0 @@
-rootProject.name = 'native_crypto'

android/src/main/AndroidManifest.xml

@@ -1,3 +0,0 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-  package="fr.pointcheval.native_crypto">
-</manifest>

android/src/main/kotlin/fr/pointcheval/native_crypto/Cipher.kt

@@ -1,93 +0,0 @@
-package fr.pointcheval.native_crypto
-
-import java.lang.Exception
-import javax.crypto.Cipher
-import javax.crypto.SecretKey
-import javax.crypto.spec.IvParameterSpec
-import javax.crypto.spec.SecretKeySpec
-
-enum class CipherAlgorithm(val spec: String) {
-    AES("AES"),
-}
-
-enum class BlockCipherMode(val instance: String) {
-    CBC("CBC"),
-    GCM("GCM"),
-}
-
-enum class Padding(val instance: String) {
-    PKCS5("PKCS5Padding"),
-    None("NoPadding")
-}
-
-class CipherParameters(private val mode: BlockCipherMode, private val padding: Padding) {
-    override fun toString(): String {
-        return mode.instance + "/" + padding.instance
-    }
-}
-
-class Cipher {
-
-    fun getCipherAlgorithm(dartAlgorithm: String) : CipherAlgorithm {
-        return when (dartAlgorithm) {
-            "aes" -> CipherAlgorithm.AES
-            else -> CipherAlgorithm.AES
-        }
-    }
-
-    fun getInstance(mode : String, padding : String) : CipherParameters {
-        val m = when (mode) {
-            "cbc" -> BlockCipherMode.CBC
-            "gcm" -> BlockCipherMode.GCM
-            else -> throw Exception()
-        }
-        val p = when (padding) {
-            "pkcs5" -> Padding.PKCS5
-            else -> Padding.None
-        }
-        return CipherParameters(m,p)
-    }
-
-    fun encrypt(data: ByteArray, key: ByteArray, algorithm: String, mode: String, padding: String) : List<ByteArray> {
-        val algo = getCipherAlgorithm(algorithm)
-        val params = getInstance(mode, padding)
-
-        val keySpecification = algo.spec + "/" + params.toString()
-
-        val mac = Hash().digest(key + data)
-        val sk: SecretKey = SecretKeySpec(key, algo.spec)
-
-        val cipher = Cipher.getInstance(keySpecification)
-        cipher.init(Cipher.ENCRYPT_MODE, sk)
-
-        val encryptedBytes = cipher.doFinal(mac + data)
-        val iv = cipher.iv
-
-        return listOf(encryptedBytes, iv);
-    }
-
-    fun decrypt(payload: Collection<ByteArray>, key: ByteArray, algorithm: String, mode: String, padding: String) : ByteArray? {
-        val algo = getCipherAlgorithm(algorithm)
-        val params = getInstance(mode, padding)
-
-        val keySpecification = algo.spec + "/" + params.toString()
-
-        val sk: SecretKey = SecretKeySpec(key, algo.spec)
-        val cipher = Cipher.getInstance(keySpecification);
-        val iv = payload.last();
-        val ivSpec = IvParameterSpec(iv)
-        cipher.init(Cipher.DECRYPT_MODE, sk, ivSpec);
-
-        val decryptedBytes = cipher.doFinal(payload.first());
-
-        val mac = decryptedBytes.copyOfRange(0, 32)
-        val decryptedContent : ByteArray = decryptedBytes.copyOfRange(32, decryptedBytes.size)
-        val verificationMac = Hash().digest(key + decryptedContent)
-
-        return if (mac.contentEquals(verificationMac)) {
-            decryptedContent
-        } else {
-            null;
-        }
-    }
-}

android/src/main/kotlin/fr/pointcheval/native_crypto/HashAlgorithm.kt

@@ -1,42 +0,0 @@
-package fr.pointcheval.native_crypto
-
-import java.security.MessageDigest
-
-enum class HashAlgorithm(val length : Int) {
-    SHA1(160),
-    SHA224(224),
-    SHA256(256),
-    SHA384(384),
-    SHA512(512);
-}
-
-
-class Hash() {
-    fun digest(data: ByteArray?, algorithm: HashAlgorithm): ByteArray {
-        val func : String = when (algorithm) {
-            HashAlgorithm.SHA1 -> "SHA-1"
-            HashAlgorithm.SHA224 -> "SHA-224"
-            HashAlgorithm.SHA256 -> "SHA-256"
-            HashAlgorithm.SHA384 -> "SHA-384"
-            HashAlgorithm.SHA512 -> "SHA-512"
-        }
-        val md = MessageDigest.getInstance(func)
-        return md.digest(data)
-    }
-
-    fun digest(data: ByteArray?, algorithm: String): ByteArray {
-        val func : HashAlgorithm = when (algorithm) {
-            "sha1" -> HashAlgorithm.SHA1
-            "sha224" -> HashAlgorithm.SHA224
-            "sha256" -> HashAlgorithm.SHA256
-            "sha384" -> HashAlgorithm.SHA384
-            "sha512" -> HashAlgorithm.SHA512
-            else -> HashAlgorithm.SHA256
-        }
-        return digest(data, func)
-    }
-
-    fun digest(data: ByteArray?): ByteArray {
-        return digest(data, HashAlgorithm.SHA256)
-    }
-}

android/src/main/kotlin/fr/pointcheval/native_crypto/KeyDerivation.kt

@@ -1,35 +0,0 @@
-package fr.pointcheval.native_crypto
-
-import android.os.Build
-import java.lang.IllegalArgumentException
-import javax.crypto.SecretKeyFactory
-import javax.crypto.spec.PBEKeySpec
-
-class KeyDerivation {
-    fun pbkdf2(password: String, salt: String, keyLength: Int, iteration: Int, algorithm: String): ByteArray {
-        val chars: CharArray = password.toCharArray()
-        val availableHashAlgorithm: Map<String, String> = mapOf(
-                "sha1" to "PBKDF2withHmacSHA1",
-                "sha224" to "PBKDF2withHmacSHA224",
-                "sha256" to "PBKDF2WithHmacSHA256",
-                "sha384" to "PBKDF2withHmacSHA384",
-                "sha512" to "PBKDF2withHmacSHA512"
-        )
-
-        if (Build.VERSION.SDK_INT >= 26) {
-            // SHA-1 and SHA-2 implemented
-            val spec = PBEKeySpec(chars, salt.toByteArray(), iteration, keyLength * 8)
-            val skf: SecretKeyFactory = SecretKeyFactory.getInstance(availableHashAlgorithm[algorithm]);
-            return skf.generateSecret(spec).encoded
-        } else if (Build.VERSION.SDK_INT >= 10) {
-            // Only SHA-1 is implemented
-            if (!algorithm.equals("sha1")) {
-                throw PlatformVersionException("Only SHA1 is implemented on this SDK version!")
-            }
-            val spec = PBEKeySpec(chars, salt.toByteArray(), iteration, keyLength * 8)
-            val skf: SecretKeyFactory = SecretKeyFactory.getInstance("PBKDF2withHmacSHA1");
-            return skf.generateSecret(spec).encoded
-        }
-        throw PlatformVersionException("Invalid SDK version!")
-    }
-}

android/src/main/kotlin/fr/pointcheval/native_crypto/KeyGeneration.kt

@@ -1,32 +0,0 @@
-package fr.pointcheval.native_crypto
-
-import java.security.KeyPairGenerator
-import java.security.SecureRandom
-import javax.crypto.KeyGenerator
-
-class KeyGeneration {
-    fun keygen(size : Int) : ByteArray {
-        val secureRandom = SecureRandom()
-        val keyGenerator = if (size in listOf<Int>(128,192,256)) {
-            KeyGenerator.getInstance("AES")
-        } else {
-            KeyGenerator.getInstance("BLOWFISH")
-        }
-
-        keyGenerator.init(size, secureRandom)
-        val sk = keyGenerator.generateKey()
-
-        return sk!!.encoded
-    }
-
-    fun rsaKeypairGen(size : Int) : List<ByteArray> {
-        val secureRandom = SecureRandom()
-        val keyGenerator = KeyPairGenerator.getInstance("RSA")
-
-        keyGenerator.initialize(size, secureRandom)
-        val keypair = keyGenerator.genKeyPair()
-        val res : List<ByteArray> = listOf(keypair.public.encoded, keypair.private.encoded)
-
-        return res
-    }
-}

android/src/main/kotlin/fr/pointcheval/native_crypto/NativeCryptoPlugin.kt

@@ -1,142 +0,0 @@
-/*
- * Copyright (c) 2020
- * Author: Hugo Pointcheval
- */
-package fr.pointcheval.native_crypto
-
-import androidx.annotation.NonNull
-import io.flutter.embedding.engine.plugins.FlutterPlugin
-import io.flutter.plugin.common.MethodCall
-import io.flutter.plugin.common.MethodChannel
-import io.flutter.plugin.common.MethodChannel.MethodCallHandler
-import io.flutter.plugin.common.MethodChannel.Result
-import io.flutter.plugin.common.PluginRegistry.Registrar
-
-
-/** NativeCryptoPlugin */
-class NativeCryptoPlugin : FlutterPlugin, MethodCallHandler {
-    override fun onAttachedToEngine(@NonNull flutterPluginBinding: FlutterPlugin.FlutterPluginBinding) {
-        val channel = MethodChannel(flutterPluginBinding.getFlutterEngine().getDartExecutor(), "native.crypto")
-        channel.setMethodCallHandler(NativeCryptoPlugin());
-    }
-
-    companion object {
-        @JvmStatic
-        fun registerWith(registrar: Registrar) {
-            val channel = MethodChannel(registrar.messenger(), "native.crypto")
-            channel.setMethodCallHandler(NativeCryptoPlugin())
-        }
-    }
-
-    override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
-
-        when (call.method) {
-            "digest" -> {
-                val message = call.argument<ByteArray>("message")
-                val algorithm = call.argument<String>("algorithm")
-
-                try {
-                    val d = Hash().digest(message, algorithm!!)
-                    if (d.isNotEmpty()) {
-                        result.success(d)
-                    } else {
-                        result.error("DIGESTERROR", "DIGEST IS NULL.", null)
-                    }
-                } catch (e : Exception) {
-                    result.error("DIGESTEXCEPTION", e.message, null)
-                }
-            }
-            "pbkdf2" -> {
-                val password = call.argument<String>("password")
-                val salt = call.argument<String>("salt")
-                val keyLength = call.argument<Int>("keyLength")
-                val iteration = call.argument<Int>("iteration")
-                val algorithm = call.argument<String>("algorithm")
-
-                try {
-                    val key = KeyDerivation().pbkdf2(password!!, salt!!, keyLength!!, iteration!!, algorithm!!)
-                    if (key.isNotEmpty()) {
-                        result.success(key)
-                    } else {
-                        result.error("PBKDF2ERROR", "PBKDF2 KEY IS NULL.", null)
-                    }
-                } catch (e : Exception) {
-                    result.error("PBKDF2EXCEPTION", e.message, null)
-                }
-            }
-            "keygen" -> {
-                val size = call.argument<Int>("size") // 128, 192, 256
-                try {
-                    val key = KeyGeneration().keygen(size!!)
-
-                    if (key.isNotEmpty()) {
-                        result.success(key)
-                    } else {
-                        result.error("KEYGENERROR", "GENERATED KEY IS NULL.", null)
-                    }
-                } catch (e : Exception) {
-                    result.error("KEYGENEXCEPTION", e.message, null)
-                }
-            }
-            "rsaKeypairGen" -> {
-                val size = call.argument<Int>("size")
-                try {
-                    val keypair = KeyGeneration().rsaKeypairGen(size!!)
-
-                    if (keypair.isNotEmpty()) {
-                        result.success(keypair)
-                    } else {
-                        result.error("KEYPAIRGENERROR", "GENERATED KEYPAIR IS EMPTY.", null)
-                    }
-                } catch (e : Exception) {
-                    result.error("KEYPAIRGENEXCEPTION", e.message, null)
-                }
-            }
-            "encrypt" -> {
-                val data = call.argument<ByteArray>("data")
-                val key = call.argument<ByteArray>("key")
-                val algorithm = call.argument<String>("algorithm")
-                val mode = call.argument<String>("mode")
-                val padding = call.argument<String>("padding")
-
-                try {
-                    val payload = Cipher().encrypt(data!!, key!!, algorithm!!, mode!!, padding!!)
-
-                    if (payload.isNotEmpty()) {
-                        result.success(payload)
-                    } else {
-                        result.error("ENCRYPTIONERROR", "ENCRYPTED PAYLOAD IS EMPTY.", null)
-                    }
-                } catch (e: Exception) {
-                    result.error("ENCRYPTIONEXCEPTION", e.message, null)
-                }
-
-            }
-            "decrypt" -> {
-                val payload = call.argument<Collection<ByteArray>>("payload") // Collection<ByteArray>
-
-                val key = call.argument<ByteArray>("key")
-                val algorithm = call.argument<String>("algorithm")
-                val mode = call.argument<String>("mode")
-                val padding = call.argument<String>("padding")
-
-                var decryptedPayload : ByteArray? = null
-
-                try {
-                    decryptedPayload = Cipher().decrypt(payload!!, key!!, algorithm!!, mode!!, padding!!)
-                    if (decryptedPayload != null && decryptedPayload.isNotEmpty()) {
-                        result.success(decryptedPayload)
-                    } else {
-                        result.error("DECRYPTIONERROR", "DECRYPTED PAYLOAD IS NULL. MAYBE VERIFICATION MAC IS UNVALID.", null)
-                    }
-                } catch (e : Exception) {
-                    result.error("DECRYPTIONEXCEPTION", e.message, null)
-                }
-            }
-            else -> result.notImplemented()
-        }
-    }
-
-    override fun onDetachedFromEngine(@NonNull binding: FlutterPlugin.FlutterPluginBinding) {
-    }
-}

android/src/main/kotlin/fr/pointcheval/native_crypto/PlatformVersionException.kt

@@ -1,5 +0,0 @@
-package fr.pointcheval.native_crypto
-
-import java.lang.Exception
-
-class PlatformVersionException(message : String) : Exception(message)

example/android/.gitignore

@@ -1,7 +0,0 @@
-gradle-wrapper.jar
-/.gradle
-/captures/
-/gradlew
-/gradlew.bat
-/local.properties
-GeneratedPluginRegistrant.java

example/android/app/src/main/kotlin/fr/pointcheval/native_crypto_example/MainActivity.kt

@@ -1,12 +0,0 @@
-package fr.pointcheval.native_crypto_example
-
-import androidx.annotation.NonNull;
-import io.flutter.embedding.android.FlutterActivity
-import io.flutter.embedding.engine.FlutterEngine
-import io.flutter.plugins.GeneratedPluginRegistrant
-
-class MainActivity: FlutterActivity() {
-    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
-        GeneratedPluginRegistrant.registerWith(flutterEngine);
-    }
-}

example/android/app/src/main/res/values/styles.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <!-- Show a splash screen on the activity. Automatically removed when
-             Flutter draws its first frame -->
-        <item name="android:windowBackground">@drawable/launch_background</item>
-    </style>
-</resources>

example/android/gradle.properties

@@ -1,4 +0,0 @@
-org.gradle.jvmargs=-Xmx1536M
-android.enableR8=true
-android.useAndroidX=true
-android.enableJetifier=true

example/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +0,0 @@
-#Fri Dec 18 22:37:36 CET 2020
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip

example/android/settings.gradle

@@ -1,15 +0,0 @@
-include ':app'
-
-def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
-
-def plugins = new Properties()
-def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
-if (pluginsFile.exists()) {
-    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
-}
-
-plugins.each { name, path ->
-    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
-    include ":$name"
-    project(":$name").projectDir = pluginDirectory
-}

example/ios/Flutter/.last_build_id

@@ -1 +0,0 @@
-2f8ea5763cdbee83dd665ad298f0e380

example/ios/Flutter/Debug.xcconfig

@@ -1,2 +0,0 @@
-#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
-#include "Generated.xcconfig"

example/ios/Flutter/Release.xcconfig

@@ -1,2 +0,0 @@
-#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
-#include "Generated.xcconfig"

example/ios/Podfile

@@ -1,90 +0,0 @@
-# Uncomment this line to define a global platform for your project
-# platform :ios, '9.0'
-
-# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
-ENV['COCOAPODS_DISABLE_STATS'] = 'true'
-
-project 'Runner', {
-  'Debug' => :debug,
-  'Profile' => :release,
-  'Release' => :release,
-}
-
-def parse_KV_file(file, separator='=')
-  file_abs_path = File.expand_path(file)
-  if !File.exists? file_abs_path
-    return [];
-  end
-  generated_key_values = {}
-  skip_line_start_symbols = ["#", "/"]
-  File.foreach(file_abs_path) do |line|
-    next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
-    plugin = line.split(pattern=separator)
-    if plugin.length == 2
-      podname = plugin[0].strip()
-      path = plugin[1].strip()
-      podpath = File.expand_path("#{path}", file_abs_path)
-      generated_key_values[podname] = podpath
-    else
-      puts "Invalid plugin specification: #{line}"
-    end
-  end
-  generated_key_values
-end
-
-target 'Runner' do
-  use_frameworks!
-  use_modular_headers!
-  
-  # Flutter Pod
-
-  copied_flutter_dir = File.join(__dir__, 'Flutter')
-  copied_framework_path = File.join(copied_flutter_dir, 'Flutter.framework')
-  copied_podspec_path = File.join(copied_flutter_dir, 'Flutter.podspec')
-  unless File.exist?(copied_framework_path) && File.exist?(copied_podspec_path)
-    # Copy Flutter.framework and Flutter.podspec to Flutter/ to have something to link against if the xcode backend script has not run yet.
-    # That script will copy the correct debug/profile/release version of the framework based on the currently selected Xcode configuration.
-    # CocoaPods will not embed the framework on pod install (before any build phases can generate) if the dylib does not exist.
-
-    generated_xcode_build_settings_path = File.join(copied_flutter_dir, 'Generated.xcconfig')
-    unless File.exist?(generated_xcode_build_settings_path)
-      raise "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter pub get is executed first"
-    end
-    generated_xcode_build_settings = parse_KV_file(generated_xcode_build_settings_path)
-    cached_framework_dir = generated_xcode_build_settings['FLUTTER_FRAMEWORK_DIR'];
-
-    unless File.exist?(copied_framework_path)
-      FileUtils.cp_r(File.join(cached_framework_dir, 'Flutter.framework'), copied_flutter_dir)
-    end
-    unless File.exist?(copied_podspec_path)
-      FileUtils.cp(File.join(cached_framework_dir, 'Flutter.podspec'), copied_flutter_dir)
-    end
-  end
-
-  # Keep pod path relative so it can be checked into Podfile.lock.
-  pod 'Flutter', :path => 'Flutter'
-
-  # Plugin Pods
-
-  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
-  # referring to absolute paths on developers' machines.
-  system('rm -rf .symlinks')
-  system('mkdir -p .symlinks/plugins')
-  plugin_pods = parse_KV_file('../.flutter-plugins')
-  plugin_pods.each do |name, path|
-    symlink = File.join('.symlinks', 'plugins', name)
-    File.symlink(path, symlink)
-    pod name, :path => File.join(symlink, 'ios')
-  end
-end
-
-# Prevent Cocoapods from embedding a second Flutter framework and causing an error with the new Xcode build system.
-install! 'cocoapods', :disable_input_output_paths => true
-
-post_install do |installer|
-  installer.pods_project.targets.each do |target|
-    target.build_configurations.each do |config|
-      config.build_settings['ENABLE_BITCODE'] = 'NO'
-    end
-  end
-end

example/ios/Podfile.lock

@@ -1,22 +0,0 @@
-PODS:
-  - Flutter (1.0.0)
-  - native_crypto (0.0.1):
-    - Flutter
-
-DEPENDENCIES:
-  - Flutter (from `Flutter`)
-  - native_crypto (from `.symlinks/plugins/native_crypto/ios`)
-
-EXTERNAL SOURCES:
-  Flutter:
-    :path: Flutter
-  native_crypto:
-    :path: ".symlinks/plugins/native_crypto/ios"
-
-SPEC CHECKSUMS:
-  Flutter: 0e3d915762c693b495b44d77113d4970485de6ec
-  native_crypto: 33b8108e3fcc10052862b69863efc2304c59cb2f
-
-PODFILE CHECKSUM: 1b66dae606f75376c5f2135a8290850eeb09ae83
-
-COCOAPODS: 1.9.3

example/ios/Runner/Runner-Bridging-Header.h

@@ -1 +0,0 @@
-#import "GeneratedPluginRegistrant.h"

example/lib/main.dart

@@ -1,69 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-import 'package:flutter/material.dart';
-import 'package:native_crypto_example/pages/kemPage.dart';
-
-import 'pages/benchmarkPage.dart';
-import 'pages/cipherPage.dart';
-import 'pages/hashKeyDerivationPage.dart';
-
-void main() => runApp(MyApp());
-
-class MyApp extends StatefulWidget {
-  @override
-  _MyAppState createState() => _MyAppState();
-}
-
-class _MyAppState extends State<MyApp> {
-  int _currentIndex = 0;
-  final List<Widget> _children = [
-    HashKeyDerivationPage(),
-    CipherPage(),
-    KemPage(),
-    BenchmarkPage(),
-  ];
-
-  void onTabTapped(int index) {
-    setState(() {
-      _currentIndex = index;
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          centerTitle: true,
-          title: const Text('Native Crypto'),
-        ),
-        body: _children[_currentIndex],
-        bottomNavigationBar: BottomNavigationBar(
-          selectedItemColor: Colors.blue,
-          unselectedItemColor: Colors.black,
-          showUnselectedLabels: true,
-          onTap: onTabTapped, // new
-          currentIndex: _currentIndex, // new
-          items: [
-            BottomNavigationBarItem(
-              icon: Icon(Icons.vpn_key),
-              label: 'Key',
-            ),
-            BottomNavigationBarItem(
-              icon: Icon(Icons.lock),
-              label: 'Encryption',
-            ),
-            BottomNavigationBarItem(
-              icon: Icon(Icons.connect_without_contact),
-              label: 'KEM',
-            ),
-            BottomNavigationBarItem(
-              icon: Icon(Icons.timer),
-              label: 'Benchmark',
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}

example/lib/pages/benchmarkPage.dart

@@ -1,144 +0,0 @@
-// Copyright (c) 2021
-// Author: Hugo Pointcheval
-import 'dart:developer';
-import 'dart:typed_data';
-
-import 'package:flutter/material.dart';
-import 'package:native_crypto/native_crypto.dart';
-
-import '../session.dart';
-import '../widgets/button.dart';
-import '../widgets/output.dart';
-
-class BenchmarkPage extends StatefulWidget {
-  const BenchmarkPage({key}) : super(key: key);
-
-  @override
-  _BenchmarkPageState createState() => _BenchmarkPageState();
-}
-
-class _BenchmarkPageState extends State<BenchmarkPage> {
-  final Output keyContent = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output benchmarkStatus = Output(
-    textEditingController: TextEditingController(),
-    large: true,
-  );
-
-  Future<void> _benchmark() async {
-    if (Session.secretKey == null || Session.secretKey.isEmpty) {
-      benchmarkStatus
-          .print('No SecretKey!\nGo in Key tab and generate or derive one.');
-      return;
-    } else if (!Session.aesCipher.isInitialized) {
-      benchmarkStatus.print(
-          'Cipher not initialized!\nGo in Key tab and generate or derive one.');
-      return;
-    }
-
-    benchmarkStatus.print("Benchmark 2/4/8/16/32/64/128/256MB\n");
-    List<int> testedSizes = [2, 4, 8, 16, 32, 64, 128, 256];
-    String csv =
-        "size;encryption time;encode time;decryption time;crypto time\n";
-
-    var beforeBench = DateTime.now();
-    for (int size in testedSizes) {
-      var bigFile = Uint8List(size * 1000000);
-      csv += "${size * 1000000};";
-      var cryptoTime = 0;
-
-      // Encryption
-      var before = DateTime.now();
-      var encryptedBigFile = await Session.aesCipher.encrypt(bigFile);
-      var after = DateTime.now();
-
-      var benchmark =
-          after.millisecondsSinceEpoch - before.millisecondsSinceEpoch;
-      benchmarkStatus.append('[$size MB] Encryption took $benchmark ms\n');
-
-      csv += "$benchmark;";
-      cryptoTime += benchmark;
-
-      // Encoding
-      before = DateTime.now();
-      encryptedBigFile.encode();
-      after = DateTime.now();
-
-      benchmark = after.millisecondsSinceEpoch - before.millisecondsSinceEpoch;
-      benchmarkStatus.append('[$size MB] Encoding took $benchmark ms\n');
-
-      csv += "$benchmark;";
-
-      // Decryption
-      before = DateTime.now();
-      await Session.aesCipher.decrypt(encryptedBigFile);
-      after = DateTime.now();
-
-      benchmark = after.millisecondsSinceEpoch - before.millisecondsSinceEpoch;
-      benchmarkStatus.append('[$size MB] Decryption took $benchmark ms\n');
-
-      csv += "$benchmark;";
-      cryptoTime += benchmark;
-      csv += "$cryptoTime\n";
-    }
-    var afterBench = DateTime.now();
-    var benchmark =
-        afterBench.millisecondsSinceEpoch - beforeBench.millisecondsSinceEpoch;
-    var sum = testedSizes.reduce((a, b) => a + b);
-    benchmarkStatus.append(
-        'Benchmark finished.\nGenerated, encrypted and decrypted $sum MB in $benchmark ms');
-    log(csv, name: "Benchmark");
-  }
-
-  void _clear() {
-    benchmarkStatus.clear();
-  }
-
-  @override
-  void initState() {
-    super.initState();
-    if (Session.secretKey != null) {
-      keyContent.print(Session.secretKey.encoded.toString());
-      Session.aesCipher = AESCipher(
-        Session.secretKey,
-        CipherParameters(
-          BlockCipherMode.CBC,
-          PlainTextPadding.PKCS5,
-        ),
-      );
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return SingleChildScrollView(
-      child: Padding(
-        padding: const EdgeInsets.all(8.0),
-        child: Column(
-          children: [
-            Align(
-              child: Text("Secret Key"),
-              alignment: Alignment.centerLeft,
-            ),
-            keyContent,
-            Row(
-              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
-              children: [
-                Button(
-                  onPressed: _benchmark,
-                  label: "Launch benchmark",
-                ),
-                Button(
-                  onPressed: _clear,
-                  label: "Clear",
-                ),
-              ],
-            ),
-            benchmarkStatus,
-          ],
-        ),
-      ),
-    );
-  }
-}

example/lib/pages/cipherPage.dart

@@ -1,205 +0,0 @@
-// Copyright (c) 2021
-// Author: Hugo Pointcheval
-import 'dart:typed_data';
-
-import 'package:flutter/material.dart';
-import 'package:native_crypto/native_crypto.dart';
-
-import '../session.dart';
-import '../utils.dart';
-import '../widgets/button.dart';
-import '../widgets/output.dart';
-
-class CipherPage extends StatefulWidget {
-  const CipherPage({key}) : super(key: key);
-
-  @override
-  _CipherPageState createState() => _CipherPageState();
-}
-
-class _CipherPageState extends State<CipherPage> {
-  final Output keyContent = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output encryptionStatus = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output decryptionStatus = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output cipherExport = Output(
-    textEditingController: TextEditingController(),
-    large: true,
-    editable: true,
-  );
-
-  final TextEditingController _plainTextController = TextEditingController();
-  CipherText cipherText;
-
-  void _encrypt() async {
-    final plainText = _plainTextController.text.trim();
-
-    if (Session.secretKey == null || Session.secretKey.isEmpty) {
-      encryptionStatus
-          .print('No SecretKey!\nGo in Key tab and generate or derive one.');
-    } else if (!Session.aesCipher.isInitialized) {
-      encryptionStatus.print(
-          'Cipher not initialized!\nGo in Key tab and generate or derive one.');
-    } else if (plainText.isEmpty) {
-      encryptionStatus.print('Entry is empty');
-    } else {
-      var stringToBytes = TypeHelper.stringToBytes(plainText);
-      cipherText = await Session.aesCipher.encrypt(stringToBytes);
-      encryptionStatus.print('String successfully encrypted.\n');
-      encryptionStatus.append("IV: " +
-          cipherText.iv.toString() +
-          "\nCipherText: " +
-          cipherText.bytes.toString());
-    }
-  }
-
-  void _alter() async {
-    if (cipherText == null || cipherText.bytes.isEmpty) {
-      decryptionStatus.print('Encrypt before altering CipherText!');
-    } else {
-      // Add 1 to the first byte
-      List<Uint8List> _altered = cipherText.bytes;
-      _altered[0][0] += 1;
-      // Recreate cipher text with altered data
-      cipherText = AESCipherText.from(_altered, cipherText.iv);
-      encryptionStatus.print('String successfully encrypted.\n');
-      encryptionStatus.append("IV: " +
-          cipherText.iv.toString() +
-          "\nCipherText: " +
-          cipherText.bytes.toString());
-      decryptionStatus.print('CipherText altered!\nDecryption will fail.');
-    }
-  }
-
-  void _decrypt() async {
-    if (Session.secretKey == null || Session.secretKey.isEmpty) {
-      decryptionStatus
-          .print('No SecretKey!\nGo in Key tab and generate or derive one.');
-    } else if (!Session.aesCipher.isInitialized) {
-      decryptionStatus.print(
-          'Cipher not initialized!\nGo in Key tab and generate or derive one.');
-    } else if (cipherText == null || cipherText.bytes.isEmpty) {
-      decryptionStatus.print('Encrypt before decrypting!');
-    } else {
-      try {
-        Uint8List plainText = await Session.aesCipher.decrypt(cipherText);
-        var bytesToString = TypeHelper.bytesToString(plainText);
-        decryptionStatus
-            .print('String successfully decrypted:\n\n$bytesToString');
-      } on DecryptionException catch (e) {
-        decryptionStatus.print(e.message);
-      }
-    }
-  }
-
-  void _export() async {
-    if (cipherText == null) {
-      decryptionStatus.print('Encrypt data before export!');
-    } else {
-      // TODO: fix export format to support chunks !
-      Uint8List payload = cipherText.encode();
-      String data = TypeHelper.bytesToBase64(payload);
-      decryptionStatus.print('CipherText successfully exported');
-      cipherExport.print(data);
-    }
-  }
-
-  void _import() async {
-    final String data = cipherExport.read();
-    if (data.isEmpty) {
-      encryptionStatus.print('CipherText import failed');
-    } else {
-      Uint8List payload = TypeHelper.base64ToBytes(data);
-      cipherText = AESCipherText.empty();
-      cipherText.decode(payload);
-      encryptionStatus.print('CipherText successfully imported\n');
-      encryptionStatus.append("IV: " +
-          cipherText.iv.toString() +
-          "\nCipherText: " +
-          cipherText.bytes.toString());
-    }
-  }
-
-  @override
-  void initState() {
-    super.initState();
-    if (Session.secretKey != null) {
-      keyContent.print(Session.secretKey.encoded.toString());
-      Session.aesCipher = AESCipher(
-        Session.secretKey,
-        CipherParameters(
-          BlockCipherMode.CBC,
-          PlainTextPadding.PKCS5,
-        ),
-      );
-    }
-  }
-
-  @override
-  void dispose() {
-    super.dispose();
-    _plainTextController.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return SingleChildScrollView(
-      child: Padding(
-        padding: const EdgeInsets.all(8.0),
-        child: Column(
-          children: [
-            Align(
-              child: Text("Secret Key"),
-              alignment: Alignment.centerLeft,
-            ),
-            keyContent,
-            TextField(
-              controller: _plainTextController,
-              decoration: InputDecoration(
-                hintText: 'Plain text',
-              ),
-            ),
-            Button(
-              onPressed: _encrypt,
-              label: "Encrypt",
-            ),
-            encryptionStatus,
-            Row(
-              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
-              children: [
-                Button(
-                  onPressed: _alter,
-                  label: "Alter cipher",
-                ),
-                Button(
-                  onPressed: _decrypt,
-                  label: "Decrypt",
-                ),
-              ],
-            ),
-            decryptionStatus,
-            Row(
-              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
-              children: [
-                Button(
-                  onPressed: _export,
-                  label: "Export cipher",
-                ),
-                Button(
-                  onPressed: _import,
-                  label: "Import cipher",
-                ),
-              ],
-            ),
-            cipherExport
-          ],
-        ),
-      ),
-    );
-  }
-}

example/lib/pages/hashKeyDerivationPage.dart

@@ -1,180 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-import 'dart:typed_data';
-
-import 'package:flutter/material.dart';
-import 'package:native_crypto/native_crypto.dart';
-
-import '../session.dart';
-import '../utils.dart';
-import '../widgets/button.dart';
-import '../widgets/output.dart';
-
-class HashKeyDerivationPage extends StatefulWidget {
-  const HashKeyDerivationPage({key}) : super(key: key);
-
-  @override
-  _HashKeyDerivationPageState createState() => _HashKeyDerivationPageState();
-}
-
-class _HashKeyDerivationPageState extends State<HashKeyDerivationPage> {
-  final Output keyContent = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output keyStatus = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output keyExport = Output(
-    textEditingController: TextEditingController(),
-    large: true,
-    editable: true,
-  );
-  final Output pbkdf2Status = Output(
-    textEditingController: TextEditingController(),
-  );
-  final Output hashStatus = Output(
-    textEditingController: TextEditingController(),
-  );
-
-  final TextEditingController _pwdTextController = TextEditingController();
-  final TextEditingController _messageTextController = TextEditingController();
-  final TextEditingController _keyTextController = TextEditingController();
-
-  void _generate() async {
-    try {
-      Session.secretKey = await SecretKey.generate(256, CipherAlgorithm.AES);
-      keyContent.print(Session.secretKey.encoded.toString());
-      keyStatus.print(
-          "Secret Key successfully generated.\nLength: ${Session.secretKey.encoded.length} bytes");
-    } catch (e) {
-      keyStatus.print(e.message);
-    }
-  }
-
-  void _pbkdf2() async {
-    final password = _pwdTextController.text.trim();
-
-    if (password.isEmpty) {
-      pbkdf2Status.print('Password is empty');
-    } else {
-      PBKDF2 _pbkdf2 =
-          PBKDF2(keyLength: 32, iteration: 1000, hash: HashAlgorithm.SHA512);
-      await _pbkdf2.derive(password: password, salt: 'salty');
-      SecretKey key = _pbkdf2.key;
-      pbkdf2Status.print('Key successfully derived.');
-      Session.secretKey = key;
-      keyContent.print(Session.secretKey.encoded.toString());
-    }
-  }
-
-  void _export() async {
-    if (Session.secretKey == null || Session.secretKey.isEmpty) {
-      keyStatus
-          .print('No SecretKey!\nGenerate or derive one before exporting!');
-    } else {
-      String key = TypeHelper.bytesToBase64(Session.secretKey.encoded);
-      keyStatus.print('Key successfully exported');
-      keyExport.print(key);
-    }
-  }
-
-  void _import() async {
-    final String key = keyExport.read();
-    if (key.isEmpty) {
-      keyStatus.print('Key import failed');
-    } else {
-      Uint8List keyBytes = TypeHelper.base64ToBytes(key);
-      Session.secretKey =
-          SecretKey.fromBytes(keyBytes, algorithm: CipherAlgorithm.AES);
-      keyStatus.print('Key successfully imported');
-      keyContent.print(Session.secretKey.encoded.toString());
-    }
-  }
-
-  void _hash() async {
-    final message = _messageTextController.text.trim();
-
-    if (message.isEmpty) {
-      hashStatus.print('Message is empty');
-    } else {
-      MessageDigest md = MessageDigest.getInstance("sha256");
-      Uint8List hash = await md.digest(TypeHelper.stringToBytes(message));
-      hashStatus.print('Message successfully hashed.\n' + hash.toString());
-    }
-  }
-
-  @override
-  void initState() {
-    super.initState();
-    if (Session.secretKey != null) {
-      keyContent.print(Session.secretKey.encoded.toString());
-    }
-  }
-
-  @override
-  void dispose() {
-    super.dispose();
-    _pwdTextController.dispose();
-    _messageTextController.dispose();
-    _keyTextController.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return SingleChildScrollView(
-      child: Padding(
-        padding: const EdgeInsets.all(8.0),
-        child: Column(
-          children: [
-            Align(
-              child: Text("Secret Key"),
-              alignment: Alignment.centerLeft,
-            ),
-            keyContent,
-            Button(
-              onPressed: _generate,
-              label: "Generate key",
-            ),
-            keyStatus,
-            TextField(
-              controller: _pwdTextController,
-              decoration: InputDecoration(
-                hintText: 'Password',
-              ),
-            ),
-            Button(
-              onPressed: _pbkdf2,
-              label: "Apply PBKDF2",
-            ),
-            pbkdf2Status,
-            TextField(
-              controller: _messageTextController,
-              decoration: InputDecoration(
-                hintText: 'Message',
-              ),
-            ),
-            Button(
-              onPressed: _hash,
-              label: "Hash",
-            ),
-            hashStatus,
-            Row(
-              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
-              children: [
-                Button(
-                  onPressed: _export,
-                  label: "Export key",
-                ),
-                Button(
-                  onPressed: _import,
-                  label: "Import key",
-                ),
-              ],
-            ),
-            keyExport
-          ],
-        ),
-      ),
-    );
-  }
-}

example/lib/pages/kemPage.dart

@@ -1,21 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-import 'package:flutter/material.dart';
-
-class KemPage extends StatefulWidget {
-  KemPage({Key key}) : super(key: key);
-
-  @override
-  _KemPageState createState() => _KemPageState();
-}
-
-class _KemPageState extends State<KemPage> {
-  @override
-  Widget build(BuildContext context) {
-    return Container(
-      child: Center(
-        child: Text("Not implemented."),
-      ),
-    );
-  }
-}

example/lib/session.dart

@@ -1,9 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'package:native_crypto/native_crypto.dart';
-
-class Session {
-  static SecretKey secretKey;
-  static AESCipher aesCipher;
-}

example/lib/utils.dart

@@ -1,30 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-import 'dart:typed_data';
-import 'dart:convert';
-
-/// Contains some useful functions.
-class TypeHelper {
-  /// Returns bytes [Uint8List] from a [String].
-  static Uint8List stringToBytes(String source) {
-    var list = source.runes.toList();
-    var bytes = Uint8List.fromList(list);
-    return bytes;
-  }
-
-  /// Returns a [String] from bytes [Uint8List].
-  static String bytesToString(Uint8List bytes) {
-    var string = String.fromCharCodes(bytes);
-    return string;
-  }
-
-  /// Returns a `base64` [String] from bytes [Uint8List].
-  static String bytesToBase64(Uint8List bytes) {
-    return base64.encode(bytes);
-  }
-
-  /// Returns a [Uint8List] from a `base64` [String].
-  static Uint8List base64ToBytes(String encoded) {
-    return base64.decode(encoded);
-  }
-}

example/lib/widgets/button.dart

@@ -1,24 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-import 'package:flutter/material.dart';
-
-class Button extends StatelessWidget {
-  const Button({Key key, this.onPressed, this.label}) : super(key: key);
-
-  final void Function() onPressed;
-  final String label;
-
-  @override
-  Widget build(BuildContext context) {
-    return Container(
-      child: FlatButton(
-        onPressed: onPressed,
-        color: Colors.blue,
-        child: Text(
-          label,
-          style: TextStyle(color: Colors.white),
-        ),
-      ),
-    );
-  }
-}

example/lib/widgets/output.dart

@@ -1,55 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-import 'dart:developer';
-
-import 'package:flutter/material.dart';
-
-class Output extends StatelessWidget {
-  const Output(
-      {Key key,
-      this.textEditingController,
-      this.large: false,
-      this.editable: false})
-      : super(key: key);
-
-  final TextEditingController textEditingController;
-  final bool large;
-  final bool editable;
-
-  void print(String message) {
-    log(message, name: "NativeCrypto Example");
-    textEditingController.text = message;
-  }
-
-  void append(String message) {
-    log(message, name: "NativeCrypto Example");
-    textEditingController.text += message;
-  }
-
-  void appendln(String message) {
-    log(message, name: "NativeCrypto Example");
-    textEditingController.text += message + "\n";
-  }
-
-  void clear() {
-    textEditingController.clear();
-  }
-
-  String read() {
-    return textEditingController.text;
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return Container(
-      child: TextField(
-        enableInteractiveSelection: true,
-        readOnly: editable ? false : true,
-        minLines: large ? 3 : 1,
-        maxLines: large ? 500 : 5,
-        decoration: InputDecoration(border: OutlineInputBorder()),
-        controller: textEditingController,
-      ),
-    );
-  }
-}

ios/Classes/Cipher.swift

@@ -1,135 +0,0 @@
-//
-//  Cipher.swift
-//
-//  NativeCryptoPlugin
-//
-//  Copyright (c) 2020
-//  Author: Hugo Pointcheval
-//
-
-import Foundation
-import CommonCrypto
-
-enum CipherAlgorithm: String {
-    case AES = "aes"
-    case BlowFish = "blowfish"
-    
-    var instance: Int {
-        switch self {
-        case .AES: return kCCAlgorithmAES
-        case .BlowFish: return kCCAlgorithmBlowfish
-        }
-    }
-}
-
-enum BlockCipherMode: String {
-    case ECB = "ecb"
-    case CBC = "cbc"
-    
-    var instance: Int {
-        switch self {
-        case .CBC: return 0
-        case .ECB: return kCCOptionECBMode
-        }
-    }
-}
-
-enum Padding: String {
-    case PKCS5 = "pkcs5"
-    case None = "none"
-    
-    var instance: Int {
-        switch self {
-        case .PKCS5: return kCCOptionPKCS7Padding
-        case .None: return 0
-        }
-    }
-}
-
-class Cipher {
-    func encrypt(data : Data, key : Data, algorithm : CipherAlgorithm, mode : BlockCipherMode, padding : Padding) -> [Data]? {
-        // Calculate Mac
-        let mac = Hash().digest(data: key + data, algorithm: .SHA256)
-        let payload = mac! + data
-        
-        // Generate IV
-        let ivBytes = UnsafeMutableRawPointer.allocate(byteCount: kCCBlockSizeAES128, alignment: 1)
-        defer { ivBytes.deallocate() }
-        let ivStatus = CCRandomGenerateBytes(ivBytes, kCCBlockSizeAES128)
-        if (ivStatus != kCCSuccess) {
-            return nil
-        }
-        let ivData = Data(bytes: ivBytes, count: kCCBlockSizeAES128)
-        
-        let algo = algorithm.instance
-        let options: CCOptions = UInt32(mode.instance + padding.instance)
-
-        
-        guard var ciphertext = crypt(operation: kCCEncrypt,
-                                    algorithm: algo,
-                                    options: options,
-                                    key: key,
-                                    initializationVector: ivData,
-                                    dataIn: payload) else { return nil }
-                
-        return [ciphertext, ivData]
-    }
-    
-    func decrypt(payload : [Data], key : Data, algorithm : CipherAlgorithm, mode : BlockCipherMode, padding : Padding) -> Data? {
-        let encrypted = payload[1] + payload[0]
-        
-        guard encrypted.count > kCCBlockSizeAES128 else { return nil }
-        let iv = encrypted.prefix(kCCBlockSizeAES128)
-        let ciphertext = encrypted.suffix(from: kCCBlockSizeAES128)
-        
-        let algo = algorithm.instance
-        let options: CCOptions = UInt32(mode.instance + padding.instance)
-        
-        guard var decrypted = crypt(operation: kCCDecrypt,
-                                    algorithm: algo,
-                                    options: options,
-                                    key: key,
-                                    initializationVector: iv,
-                                    dataIn: ciphertext) else {return nil}
-        
-        
-        // Create a range based on the length of data to return
-        let range = 0..<32
-
-        // Get a new copy of data
-        let mac = decrypted.subdata(in: range)
-        decrypted.removeSubrange(range)
-        
-        let vmac = Hash().digest(data: key + decrypted, algorithm: .SHA256)
-        
-        if (mac.base64EncodedData() == vmac!.base64EncodedData()) {
-            return decrypted
-        } else {
-            return nil
-        }
-    }
-    
-    private func crypt(operation: Int, algorithm: Int, options: UInt32, key: Data,
-            initializationVector: Data, dataIn: Data) -> Data? {
-        
-        return key.withUnsafeBytes { keyUnsafeRawBufferPointer in
-            return dataIn.withUnsafeBytes { dataInUnsafeRawBufferPointer in
-                return initializationVector.withUnsafeBytes { ivUnsafeRawBufferPointer in
-                    let dataOutSize: Int = dataIn.count + kCCBlockSizeAES128*2
-                    let dataOut = UnsafeMutableRawPointer.allocate(byteCount: dataOutSize,
-                        alignment: 1)
-                    defer { dataOut.deallocate() }
-                    var dataOutMoved: Int = 0
-                    let status = CCCrypt(CCOperation(operation), CCAlgorithm(algorithm),
-                        CCOptions(options),
-                        keyUnsafeRawBufferPointer.baseAddress, key.count,
-                        ivUnsafeRawBufferPointer.baseAddress,
-                        dataInUnsafeRawBufferPointer.baseAddress, dataIn.count,
-                        dataOut, dataOutSize, &dataOutMoved)
-                    guard status == kCCSuccess else { return nil }
-                    return Data(bytes: dataOut, count: dataOutMoved)
-                }
-            }
-        }
-    }
-}

ios/Classes/Hash.swift

@@ -1,74 +0,0 @@
-//
-//  Hash.swift
-//
-//  NativeCryptoPlugin
-//
-//  Copyright (c) 2020
-//  Author: Hugo Pointcheval
-//
-import Foundation
-import CommonCrypto
-
-enum HashAlgorithm: String {
-    case SHA1 = "sha1"
-    case SHA224 = "sha224"
-    case SHA256 = "sha256"
-    case SHA384 = "sha384"
-    case SHA512 = "sha512"
-    
-    var digestLength: Int {
-        switch self {
-        case .SHA1: return Int(CC_SHA1_DIGEST_LENGTH)
-        case .SHA224: return Int(CC_SHA224_DIGEST_LENGTH)
-        case .SHA256: return Int(CC_SHA256_DIGEST_LENGTH)
-        case .SHA384: return Int(CC_SHA384_DIGEST_LENGTH)
-        case .SHA512: return Int(CC_SHA512_DIGEST_LENGTH)
-        }
-    }
-    
-    var pbkdf2: UInt32 {
-        switch self {
-        case .SHA1: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA1)
-        case .SHA224: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA224)
-        case .SHA256: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA256)
-        case .SHA384: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA384)
-        case .SHA512: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA512)
-        }
-    }
-}
-
-class Hash {
-    func digest(data: Data?, algorithm: HashAlgorithm) -> Data? {
-        if (data == nil) {
-            return nil
-        }
-        
-        let hashBytes = UnsafeMutablePointer<UInt8>.allocate(capacity: algorithm.digestLength)
-        defer { hashBytes.deallocate() }
-        
-        switch algorithm {
-        case .SHA1:
-            data!.withUnsafeBytes { (buffer) -> Void in
-                CC_SHA1(buffer.baseAddress!, CC_LONG(buffer.count), hashBytes)
-            }
-        case .SHA224:
-            data!.withUnsafeBytes { (buffer) -> Void in
-                CC_SHA224(buffer.baseAddress!, CC_LONG(buffer.count), hashBytes)
-            }
-        case .SHA256:
-            data!.withUnsafeBytes { (buffer) -> Void in
-                CC_SHA256(buffer.baseAddress!, CC_LONG(buffer.count), hashBytes)
-            }
-        case .SHA384:
-            data!.withUnsafeBytes { (buffer) -> Void in
-                CC_SHA384(buffer.baseAddress!, CC_LONG(buffer.count), hashBytes)
-            }
-        case .SHA512:
-            data!.withUnsafeBytes { (buffer) -> Void in
-                CC_SHA512(buffer.baseAddress!, CC_LONG(buffer.count), hashBytes)
-            }
-        }
-        
-        return Data(bytes: hashBytes, count: algorithm.digestLength)
-    }
-}

ios/Classes/KeyDerivation.swift

@@ -1,40 +0,0 @@
-//
-//  KeyDerivation.swift
-//
-//  NativeCryptoPlugin
-//
-//  Copyright (c) 2020
-//  Author: Hugo Pointcheval
-//
-
-import Foundation
-import CommonCrypto
-
-class KeyDerivation {
-    func pbkdf2(password: String, salt: String, keyLength: Int, iteration: Int, algorithm: HashAlgorithm) -> Data? {
-        
-        let passwordData = password.data(using: .utf8)!
-        let saltData = salt.data(using: .utf8)!
-        
-        var derivedKeyData = Data(repeating: 0, count: keyLength)
-        var localDerivedKeyData = derivedKeyData
-            
-        let derivationStatus = derivedKeyData.withUnsafeMutableBytes { derivedKeyBytes in
-            saltData.withUnsafeBytes { saltBytes in
-                CCKeyDerivationPBKDF(
-                    CCPBKDFAlgorithm(kCCPBKDF2),
-                    password, passwordData.count,
-                    saltBytes, saltData.count,
-                    algorithm.pbkdf2,
-                    UInt32(iteration),
-                    derivedKeyBytes, localDerivedKeyData.count)
-            }
-        }
-        if (derivationStatus != kCCSuccess) {
-            print("Error: \(derivationStatus)")
-            return nil;
-        }
-        
-        return derivedKeyData
-    }
-}

ios/Classes/KeyGeneration.swift

@@ -1,25 +0,0 @@
-//
-//  KeyGeneration.swift
-//
-//  NativeCryptoPlugin
-//
-//  Copyright (c) 2020
-//  Author: Hugo Pointcheval
-//
-import Foundation
-
-class KeyGeneration {
-    func keygen(size : NSNumber) -> Data? {
-        var bytes = [Int8](repeating: 0, count: size.intValue / 8)
-        let status = SecRandomCopyBytes(kSecRandomDefault, bytes.count, &bytes)
-
-        if status == errSecSuccess {
-            let keyBytes = bytes.withUnsafeBytes {
-                return Data(Array($0))
-                
-            }
-            return keyBytes
-        }
-        return nil
-    }
-}

ios/Classes/NativeCryptoPlugin.h

@@ -1,4 +0,0 @@
-#import <Flutter/Flutter.h>
-
-@interface NativeCryptoPlugin : NSObject<FlutterPlugin>
-@end

ios/Classes/SwiftNativeCryptoPlugin.swift

@@ -1,133 +0,0 @@
-//
-//  NativeCryptoPlugin
-//
-//  Copyright (c) 2020
-//  Author: Hugo Pointcheval
-//
-import Flutter
-
-extension FlutterStandardTypedData {
-  var uint8Array: Array<UInt8> {
-    return Array(data)
-  }
-  var int8Array: Array<Int8> {
-    return data.withUnsafeBytes { raw in
-      [Int8](raw.bindMemory(to: Int8.self))
-    }
-  }
-}
-
-public class SwiftNativeCryptoPlugin: NSObject, FlutterPlugin {
-  public static func register(with registrar: FlutterPluginRegistrar) {
-    let channel = FlutterMethodChannel(name: "native.crypto", binaryMessenger: registrar.messenger())
-    let instance = SwiftNativeCryptoPlugin()
-    registrar.addMethodCallDelegate(instance, channel: channel)
-  }
-
-  public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
-    switch call.method {
-    case "digest":
-        let args = call.arguments as! NSDictionary
-        
-        let message = (args["message"] as! FlutterStandardTypedData).data
-        let algo = args["algorithm"] as! String
-        
-        let algorithm : HashAlgorithm? = HashAlgorithm.init(rawValue: algo)
-        
-        let hash = Hash().digest(data: message, algorithm: algorithm!)
-        
-        if hash != nil {
-            result(FlutterStandardTypedData.init(bytes: hash!))
-        } else {
-            result(FlutterError(code: "DIGESTERROR",
-                                message: "DIGEST IS NIL.",
-                                details: nil)
-            )
-        }
-    case "pbkdf2":
-        let args = call.arguments as! NSDictionary
-        
-        let password = args["password"] as! String
-        let salt = args["salt"] as! String
-        let keyLength = args["keyLength"] as! NSNumber
-        let iteration = args["iteration"] as! NSNumber
-        let algo = args["algorithm"] as! String
-        
-        let algorithm : HashAlgorithm? = HashAlgorithm.init(rawValue: algo)
-        
-        let key = KeyDerivation().pbkdf2(password: password, salt: salt, keyLength: keyLength.intValue, iteration: iteration.intValue, algorithm: algorithm!)
-        
-        if key != nil {
-            result(FlutterStandardTypedData.init(bytes: key!))
-        } else {
-            result(FlutterError(code: "PBKDF2ERROR",
-                                message: "PBKDF2 KEY IS NIL.",
-                                details: nil)
-            )
-        }
-    case "keygen":
-        let args = call.arguments as! NSDictionary
-        
-        let size = args["size"] as! NSNumber
-        
-        let key = KeyGeneration().keygen(size: size)
-        
-        if key != nil {
-            result(FlutterStandardTypedData.init(bytes: key!))
-        } else {
-            result(FlutterError(code: "KEYGENERROR",
-                                message: "GENERATED KEY IS NIL.",
-                                details: nil))
-        }
-    case "encrypt":
-        let args = call.arguments as! NSDictionary
-        
-        let data = (args["data"] as! FlutterStandardTypedData).data
-        let key = (args["key"] as! FlutterStandardTypedData).data
-        let algo = args["algorithm"] as! String
-        let mode = args["mode"] as! String
-        let padding = args["padding"] as! String
-        
-        let algorithm : CipherAlgorithm? = CipherAlgorithm.init(rawValue: algo)
-        let modeEnum : BlockCipherMode? = BlockCipherMode.init(rawValue: mode)
-        let paddingEnum : Padding? = Padding.init(rawValue: padding)
-        
-        let ciphertext = Cipher().encrypt(data: data, key: key, algorithm: algorithm!, mode: modeEnum!, padding: paddingEnum!)
-        
-        if ciphertext != nil {
-            result(ciphertext)
-        } else {
-            result(FlutterError(code: "ENCRYPTIONERROR",
-                                message: "ENCRYPTED PAYLOAD IS EMPTY.",
-                                details: nil))
-        }
-    case "decrypt":
-        let args = call.arguments as! NSDictionary
-        
-        let payload = args["payload"] as! NSArray
-        let key = (args["key"] as! FlutterStandardTypedData).data
-        let algo = args["algorithm"] as! String
-        let mode = args["mode"] as! String
-        let padding = args["padding"] as! String
-        
-        let encrypted = (payload[0] as! FlutterStandardTypedData).data
-        let iv = (payload[1] as! FlutterStandardTypedData).data
-        let encryptedPayload = [encrypted, iv]
-        
-        let algorithm : CipherAlgorithm? = CipherAlgorithm.init(rawValue: algo)
-        let modeEnum : BlockCipherMode? = BlockCipherMode.init(rawValue: mode)
-        let paddingEnum : Padding? = Padding.init(rawValue: padding)
-                
-        let decrypted = Cipher().decrypt(payload: encryptedPayload, key: key, algorithm: algorithm!, mode: modeEnum!, padding: paddingEnum!)
-        
-        if decrypted != nil {
-            result(FlutterStandardTypedData.init(bytes: decrypted!))
-        } else {
-            result(FlutterError(code: "DECRYPTIONERROR",
-                                message: "DECRYPTED PAYLOAD IS NIL. MAYBE VERIFICATION MAC IS UNVALID.",
-                                details: nil))
-        }
-    default: result(FlutterMethodNotImplemented)
-    }
-  }
-}

lib/native_crypto.dart

@@ -1,19 +0,0 @@
-// Copyright (c) 2021
-// Author: Hugo Pointcheval
-export './src/exceptions.dart';
-export './src/key.dart';
-export './src/keyspec.dart';
-export './src/keyderivation.dart';
-export './src/digest.dart';
-export './src/cipher.dart';
-//export './src/kem.dart';
-export './src/platform.dart';
-export './src/utils.dart';
-
-export './src/sym/AES.dart';
-//export './src/asym/RSA.dart';
-
-const String version = "0.0.6";
-const String author = "Hugo Pointcheval";
-const String website = "https://hugo.pointcheval.fr/";
-const String repository = "https://github.com/hugo-pcl/native-crypto-flutter";

lib/src/asym/RSA.dart

@@ -1,74 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'package:native_crypto/src/exceptions.dart';
-import 'package:native_crypto/src/kem.dart';
-import 'package:native_crypto/src/key.dart';
-
-/// This represents RSA Key Encapsulation Mechanism
-class RSAKeyEncapsulationMechanism implements KeyEncapsulationMechanism {
-  bool _isInit = false;
-  KemMode _mode;
-
-  PublicKey _publicKey;
-  PrivateKey _privateKey;
-
-  @override
-  KemAlgorithm get algorithm => KemAlgorithm.RSA;
-
-  @override
-  Object get options => null;
-
-  @override
-  bool get isInitialized => _isInit;
-
-  @override
-  KemMode get mode => _mode;
-
-  @override
-  KeyPair get keypair => KeyPair.from(_publicKey, _privateKey);
-
-  RSAKeyEncapsulationMechanism(
-    KemMode mode, {
-    KeyPair keyPair,
-    PublicKey publicKey,
-  }) {
-    _mode = mode;
-    if (_mode == KemMode.ENCAPSULATION) {
-      if (publicKey != null) {
-        _isInit = true;
-        _publicKey = publicKey;
-      } else if (keyPair != null) {
-        if (keyPair.publicKey != null) {
-          _isInit = true;
-          _publicKey = keyPair.publicKey;
-        }
-      }
-    } else if (_mode == KemMode.DECAPSULATION) {
-      if (keyPair != null) {
-        if (keyPair.isComplete) {
-          _isInit = true;
-          _publicKey = keyPair.publicKey;
-          _privateKey = keyPair.privateKey;
-        } else {
-          throw KemInitException("Keypair must be complete for decapsulation.");
-        }
-      } else {
-        throw KemInitException("You must provide a keypair for decapsulation.");
-      }
-    }
-  }
-
-  @override
-  Future<Encapsulation> encapsulate() {
-    if (!_isInit) {
-      throw KemInitException("KEM not properly initialized.");
-    }
-    throw UnimplementedError();
-  }
-
-  @override
-  Future<SecretKey> decapsulate(Encapsulation encapsulation) {
-    throw UnimplementedError();
-  }
-}

lib/src/cipher.dart

@@ -1,101 +0,0 @@
-// Copyright (c) 2021
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'key.dart';
-
-/// Represents different cipher algorithms
-enum CipherAlgorithm { AES, None }
-
-/// Represents different block cipher modes
-enum BlockCipherMode { CBC, GCM }
-
-/// Represents different padding
-enum PlainTextPadding { PKCS5, None }
-
-/// Represents a cipher.
-///
-/// In cryptography, a cipher is an algorithm for performing encryption
-/// or decryption - a series of well-defined steps that can
-/// be followed as a procedure.
-abstract class Cipher {
-  /// Returns the standard algorithm name for this cipher
-  CipherAlgorithm get algorithm;
-
-  /// Returns the secret key used for this cipher
-  SecretKey get secretKey;
-
-  /// Returns the parameters used for this cipher
-  CipherParameters get parameters;
-
-  /// Returns true if cipher is initialized
-  bool get isInitialized;
-
-  /// Returnes list of supported [CipherParameters] for this cipher
-  List<CipherParameters> get supportedParameters;
-
-  /// Encrypts data.
-  ///
-  /// Takes [Uint8List] data as parameter.
-  /// Returns a [CipherText].
-  Future<CipherText> encrypt(Uint8List data);
-
-  /// Decrypts cipher text.
-  ///
-  /// Takes [CipherText] as parameter.
-  /// And returns plain text data as [Uint8List].
-  Future<Uint8List> decrypt(CipherText cipherText);
-}
-
-/// Represents a cipher text.
-///
-/// It's the result of an encryption.
-abstract class CipherText {
-  /// Returns the standard algorithm name used for this ciphertext.
-  CipherAlgorithm get algorithm;
-
-  /// Returns the data of this ciphertext (in chunks).
-  List<Uint8List> get bytes;
-
-  /// Returns the IV of this cipertext (in chunks).
-  List<Uint8List> get iv;
-
-  /// Returns the chunk number of this cipherText.
-  int get size;
-
-  /// Returns this ciphertext in simple Byte Array format.
-  Uint8List encode();
-
-  /// Transforms a simple Byte Array to a NativeCrypto cipherText.
-  void decode(Uint8List src);
-}
-
-/// Represents a pair of [BlockCipherMode] and [Padding]
-class CipherParameters {
-  BlockCipherMode _mode;
-  PlainTextPadding _padding;
-
-  /// Returns mode used in the cipher
-  BlockCipherMode get mode => _mode;
-
-  /// Returns padding used in the cipher
-  PlainTextPadding get padding => _padding;
-
-  CipherParameters(BlockCipherMode mode, PlainTextPadding padding) {
-    _mode = mode;
-    _padding = padding;
-  }
-
-  @override
-  bool operator ==(Object o) {
-    if (identical(this, o)) return true;
-
-    return o is CipherParameters &&
-        o._mode.index == _mode.index &&
-        o._padding.index == _padding.index;
-  }
-
-  @override
-  int get hashCode => _mode.hashCode ^ _padding.hashCode;
-}

lib/src/digest.dart

@@ -1,41 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'exceptions.dart';
-import 'platform.dart';
-import 'utils.dart';
-
-enum HashAlgorithm { SHA1, SHA224, SHA256, SHA384, SHA512 }
-
-/// Represents message digest, or hash function.
-class MessageDigest {
-  HashAlgorithm _algo;
-
-  /// Returns the standard algorithm name for this digest
-  HashAlgorithm get algorithm => _algo;
-
-  /// Returns true if digest is initialized
-  bool get isInitialized => (_algo != null);
-
-  /// Creates [MessageDigest] with a specific algorithm
-  MessageDigest(HashAlgorithm algorithm) {
-    _algo = algorithm;
-  }
-
-  /// Creates [MessageDigest] from the name of an algorithm
-  MessageDigest.getInstance(String algorithm) {
-    _algo = Utils.getHashAlgorithm(algorithm);
-  }
-
-  /// Hashes a message
-  Future<Uint8List> digest(Uint8List data) async {
-    if (!isInitialized) {
-      throw DigestInitException('Digest not properly initialized.');
-    }
-
-    Uint8List hash = await Platform().digest(data, _algo);
-    return hash;
-  }
-}

lib/src/exceptions.dart

@@ -1,55 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-class NativeCryptoException implements Exception {
-  String message;
-  NativeCryptoException(this.message);
-}
-
-class UtilsException extends NativeCryptoException {
-  UtilsException(message) : super(message);
-}
-
-class KeyException extends NativeCryptoException {
-  KeyException(message) : super(message);
-}
-
-class KeyGenerationException extends NativeCryptoException {
-  KeyGenerationException(message) : super(message);
-}
-
-class KeyPairGenerationException extends NativeCryptoException {
-  KeyPairGenerationException(message) : super(message);
-}
-
-class KeyDerivationException extends NativeCryptoException {
-  KeyDerivationException(message) : super(message);
-}
-
-class CipherInitException extends NativeCryptoException {
-  CipherInitException(message) : super(message);
-}
-
-class KemInitException extends NativeCryptoException {
-  KemInitException(message) : super(message);
-}
-
-class DigestInitException extends NativeCryptoException {
-  DigestInitException(message) : super(message);
-}
-
-class DigestException extends NativeCryptoException {
-  DigestException(message) : super(message);
-}
-
-class EncryptionException extends NativeCryptoException {
-  EncryptionException(message) : super(message);
-}
-
-class DecryptionException extends NativeCryptoException {
-  DecryptionException(message) : super(message);
-}
-
-class NotImplementedException extends NativeCryptoException {
-  NotImplementedException(message) : super(message);
-}

lib/src/kem.dart

@@ -1,52 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'key.dart';
-
-enum KemAlgorithm { RSA, ECDH }
-
-enum KemMode { ENCAPSULATION, DECAPSULATION }
-
-abstract class KeyEncapsulationMechanism {
-  /// Returns the standard algorithm name for this kem
-  KemAlgorithm get algorithm;
-
-  /// Returns the parameters used for this kem
-  Object get options;
-
-  /// Returns true if kem is initialized
-  bool get isInitialized;
-
-  /// Returns mode used in this kem.
-  KemMode get mode;
-
-  /// Returns key pair used in this kem.
-  ///
-  /// Can be an incomplete if just have public key
-  /// for example.
-  KeyPair get keypair;
-
-  /// Encapsulate key.
-  ///
-  /// Returns an [Encapsulation].
-  Future<Encapsulation> encapsulate();
-
-  /// Decapsulate key.
-  ///
-  /// Takes [Encapsulation] as parameter.
-  /// And returns plain text key as [SecretKey].
-  Future<SecretKey> decapsulate(Encapsulation encapsulation);
-}
-
-abstract class Encapsulation {
-  /// Returns the standard algorithm name used for this encapsulation
-  KemAlgorithm get algorithm;
-
-  /// Returns the secret key used in this encapsulation
-  SecretKey get secretKey;
-
-  /// Returns the encapsulated key
-  Uint8List get key;
-}

lib/src/key.dart

@@ -1,118 +0,0 @@
-// Copyright (c) 2021
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'package:flutter/services.dart';
-import 'platform.dart';
-
-import 'exceptions.dart';
-import 'keyspec.dart';
-import 'cipher.dart';
-import 'utils.dart';
-
-/// This is the base class of all key types.
-abstract class Key {
-  Uint8List _bytes;
-  String _algo;
-
-  /// Returns key as raw byte array.
-  Uint8List get encoded => _bytes;
-
-  /// Returns the standard algorithm name for this key
-  String get algorithm => _algo;
-
-  /// Returns the true if this key is null or empty.
-  bool get isEmpty => (_bytes == null || _bytes.length == 0);
-
-  Key({Uint8List bytes, String algorithm}) {
-    _bytes = bytes;
-    _algo = algorithm;
-  }
-}
-
-/// This represents a secret key, usefull in
-/// algorithms like AES or BlowFish.
-class SecretKey extends Key {
-  /// Creates a key from raw byte array
-  SecretKey.fromBytes(Uint8List bytes,
-      {CipherAlgorithm algorithm: CipherAlgorithm.None})
-      : super(bytes: bytes, algorithm: algorithm.name);
-
-  /// Creates a key from a specific size.
-  static Future<SecretKey> generate(int size, CipherAlgorithm algorithm) async {
-    if (algorithm == null) {
-      throw KeyException("Algorithm can't be null");
-    } else if (algorithm == CipherAlgorithm.AES) {
-      List<int> _supportedSizes = [128, 192, 256];
-      if (!_supportedSizes.contains(size)) {
-        throw KeyException("AES must be 128, 192 or 256 bits long.");
-      }
-    }
-
-    try {
-      Uint8List _key = await Platform().keygen(size);
-      return SecretKey.fromBytes(_key, algorithm: algorithm);
-    } on PlatformException catch (e) {
-      throw KeyException(e);
-    }
-  }
-}
-
-/// This represents a keypair, usefull in
-/// algorithms like RSA.
-class KeyPair extends Key {
-  PublicKey _publicKey;
-  PrivateKey _privateKey;
-
-  /// Returns public key of this key pair.
-  PublicKey get publicKey => _publicKey;
-
-  /// Returns private key of this key pair.
-  PrivateKey get privateKey => _privateKey;
-
-  /// Returns true if key pair contains public AND private keys
-  bool get isComplete => (_publicKey != null && _privateKey != null);
-
-  /// Creates a key pair from public and private keys.
-  KeyPair.from(PublicKey publicKey, PrivateKey privateKey, {String algorithm}) {
-    _publicKey = publicKey;
-    _privateKey = privateKey;
-    _algo = algorithm;
-  }
-
-  /// Creates a key pair from a specific size.
-  static Future<KeyPair> generate(KeySpec keySpec) async {
-    List<String> _supportedAlgorithms = ["RSA"];
-    if (!_supportedAlgorithms.contains(keySpec.algorithm)) {
-      throw KeyException(keySpec.algorithm + " not supported!");
-    }
-    if (keySpec.algorithm == "RSA") {
-      RSAKeySpec spec = keySpec;
-      try {
-        List<Uint8List> kp = await Platform().rsaKeypairGen(spec.size);
-        PublicKey _publicKey = PublicKey.fromBytes(kp.first, "RSA");
-        PrivateKey _privateKey = PrivateKey.fromBytes(kp.last, "RSA");
-        return KeyPair.from(_publicKey, _privateKey, algorithm: "RSA");
-      } on PlatformException catch (e) {
-        throw KeyException(e);
-      }
-    } else {
-      throw NotImplementedException("KeyPair generation not yet implemented.");
-    }
-  }
-}
-
-/// This represents a public key
-class PublicKey extends Key {
-  /// Creates a public key from raw byte array
-  PublicKey.fromBytes(Uint8List bytes, String algorithm)
-      : super(bytes: bytes, algorithm: algorithm);
-}
-
-/// This represents a private key
-class PrivateKey extends Key {
-  /// Creates a private key from raw byte array
-  PrivateKey.fromBytes(Uint8List bytes, String algorithm)
-      : super(bytes: bytes, algorithm: algorithm);
-}

lib/src/keyderivation.dart

@@ -1,81 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'package:native_crypto/src/digest.dart';
-import 'package:native_crypto/src/exceptions.dart';
-import 'package:native_crypto/src/key.dart';
-
-import 'platform.dart';
-
-enum KdfAlgorithm { PBKDF2, SCrypt }
-
-/// Represents a Key Derivation Function
-abstract class KeyDerivation {
-  /// Returns the standard algorithm name for this key derivation function
-  KdfAlgorithm get algorithm;
-
-  /// Returns the derivated key
-  SecretKey get key;
-
-  /// Derive key
-  Future<void> derive();
-}
-
-class PBKDF2 implements KeyDerivation {
-  SecretKey _sk;
-
-  int _length;
-  int _iteration;
-  HashAlgorithm _hash;
-
-  @override
-  KdfAlgorithm get algorithm => KdfAlgorithm.PBKDF2;
-
-  @override
-  SecretKey get key => _sk;
-
-  PBKDF2({
-    int keyLength: 32,
-    int iteration: 10000,
-    HashAlgorithm hash: HashAlgorithm.SHA256,
-  }) {
-    _length = keyLength;
-    _iteration = iteration;
-    _hash = hash;
-  }
-
-  @override
-  Future<void> derive({String password, String salt}) async {
-    if (password == null || salt == null) {
-      throw KeyDerivationException("Password or Salt can't be null!");
-    }
-    if (_hash == null) {
-      throw KeyDerivationException("Hash Algorithm can't be null!");
-    }
-
-    Uint8List derivation = await Platform().pbkdf2(
-      password,
-      salt,
-      keyLength: _length,
-      iteration: _iteration,
-      algorithm: _hash,
-    );
-
-    _sk = SecretKey.fromBytes(derivation);
-  }
-}
-
-class Scrypt implements KeyDerivation {
-  @override
-  KdfAlgorithm get algorithm => KdfAlgorithm.SCrypt;
-
-  @override
-  SecretKey get key => throw UnimplementedError();
-
-  @override
-  Future<void> derive() {
-    throw UnimplementedError();
-  }
-}

lib/src/keyspec.dart

@@ -1,21 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-/// This represents security parameters.
-abstract class KeySpec {
-  /// Returns the standard algorithm name for this key
-  String get algorithm;
-}
-
-class RSAKeySpec implements KeySpec {
-  int _size;
-
-  String get algorithm => "RSA";
-
-  /// Returns the size of RSA keys
-  int get size => _size;
-
-  RSAKeySpec(int size) {
-    _size = size;
-  }
-}

lib/src/platform.dart

@@ -1,162 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'package:flutter/services.dart';
-
-import 'cipher.dart';
-import 'digest.dart';
-import 'exceptions.dart';
-import 'utils.dart';
-
-/// Represents a platform, and is usefull to calling
-/// methods from a specific platform.
-class Platform {
-  /// Contains the channel for platform specific code.
-  static const MethodChannel _channel = const MethodChannel('native.crypto');
-
-  /// Calls native code.
-  static Future<T> call<T>(String method, [Map<String, dynamic> arguments]) {
-    return _channel.invokeMethod(method, arguments);
-  }
-
-  /// Calls native code that return list.
-  static Future<List<T>> callList<T>(String method,
-      [Map<String, dynamic> arguments]) {
-    return _channel.invokeListMethod(method, arguments);
-  }
-
-  /// Digests a message with a specific algorithm
-  ///
-  /// Takes message and algorithm as parameters.
-  ///
-  /// Returns a hash as [Uint8List].
-  Future<Uint8List> digest(
-    Uint8List message,
-    HashAlgorithm algorithm,
-  ) async {
-    try {
-      final Uint8List hash = await call('digest', <String, dynamic>{
-        'message': message,
-        'algorithm': algorithm.name,
-      });
-      return hash;
-    } on PlatformException catch (e) {
-      throw DigestException(e.code + " : " + e.message);
-    }
-  }
-
-  /// Calls native PBKDF2.
-  ///
-  /// Takes password and salt as parameters.
-  /// And optionnally keyLength in bytes, number of iterations and hash algorithm.
-  ///
-  /// Returns a key as [Uint8List].
-  Future<Uint8List> pbkdf2(
-    String password,
-    String salt, {
-    int keyLength: 32,
-    int iteration: 10000,
-    HashAlgorithm algorithm: HashAlgorithm.SHA256,
-  }) async {
-    try {
-      final Uint8List key = await call('pbkdf2', <String, dynamic>{
-        'password': password,
-        'salt': salt,
-        'keyLength': keyLength,
-        'iteration': iteration,
-        'algorithm': algorithm.name,
-      });
-      return key;
-    } on PlatformException catch (e) {
-      throw KeyDerivationException(e.code + " : " + e.message);
-    }
-  }
-
-  /// Generates a random key.
-  ///
-  /// Takes size in bits.
-  ///
-  /// Returns a key as [Uint8List].
-  Future<Uint8List> keygen(int size) async {
-    try {
-      final Uint8List key = await call('keygen', <String, dynamic>{
-        'size': size,
-      });
-      return key;
-    } on PlatformException catch (e) {
-      throw KeyGenerationException(e.code + " : " + e.message);
-    }
-  }
-
-  /// Generates an RSA key pair.
-  ///
-  /// Takes size in bits.
-  ///
-  /// Returns a key pair as list of [Uint8List], the public key is the
-  /// first element, and the private is the last.
-  Future<List<Uint8List>> rsaKeypairGen(int size) async {
-    try {
-      final List<Uint8List> keypair =
-          await call('rsaKeypairGen', <String, dynamic>{
-        'size': size,
-      });
-      return keypair;
-    } on PlatformException catch (e) {
-      throw KeyPairGenerationException(e.code + " : " + e.message);
-    }
-  }
-
-  /// Encrypts data with a secret key and algorithm.
-  ///
-  /// Takes data, key, algorithm, mode and padding as parameters.
-  ///
-  /// Encrypts data and returns cipher text
-  /// and IV as a list of [Uint8List].
-  Future<List<Uint8List>> encrypt(
-    Uint8List data,
-    Uint8List key,
-    CipherAlgorithm algorithm,
-    CipherParameters parameters,
-  ) async {
-    try {
-      final List<Uint8List> payload =
-          await callList('encrypt', <String, dynamic>{
-        'data': data,
-        'key': key,
-        'algorithm': algorithm.name,
-        'mode': parameters.mode.name,
-        'padding': parameters.padding.name,
-      });
-      return payload;
-    } on PlatformException catch (e) {
-      throw EncryptionException(e.code + " : " + e.message);
-    }
-  }
-
-  /// Decrypts a payload with a secret key and algorithm.
-  ///
-  /// The payload must be a list of `Uint8List`
-  /// with encrypted cipher as first and IV as second member.
-  Future<Uint8List> decrypt(
-    List<Uint8List> payload,
-    Uint8List key,
-    CipherAlgorithm algorithm,
-    CipherParameters parameters,
-  ) async {
-    try {
-      final Uint8List data =
-          await _channel.invokeMethod('decrypt', <String, dynamic>{
-        'payload': payload,
-        'key': key,
-        'algorithm': algorithm.name,
-        'mode': parameters.mode.name,
-        'padding': parameters.padding.name,
-      });
-      return data;
-    } on PlatformException catch (e) {
-      throw DecryptionException(e.code + " : " + e.message);
-    }
-  }
-}

lib/src/sym/AES.dart

@@ -1,222 +0,0 @@
-// Copyright (c) 2021
-// Author: Hugo Pointcheval
-
-import 'dart:typed_data';
-
-import 'package:native_crypto/native_crypto.dart';
-
-import '../cipher.dart';
-import '../exceptions.dart';
-import '../key.dart';
-import '../platform.dart';
-import '../utils.dart';
-
-/// Defines all available key sizes.
-enum AESKeySize { bits128, bits192, bits256 }
-
-extension AESKeySizeExtension on AESKeySize {
-  int get length {
-    int l;
-    switch (this) {
-      case AESKeySize.bits128:
-        l = 128;
-        break;
-      case AESKeySize.bits192:
-        l = 192;
-        break;
-      case AESKeySize.bits256:
-        l = 256;
-        break;
-    }
-    return l;
-  }
-}
-
-class AESCipher implements Cipher {
-  SecretKey _sk;
-  CipherParameters _params;
-  bool _isInit;
-
-  @override
-  CipherAlgorithm get algorithm => CipherAlgorithm.AES;
-
-  @override
-  SecretKey get secretKey => _sk;
-
-  @override
-  CipherParameters get parameters => _params;
-
-  @override
-  bool get isInitialized => _isInit;
-
-  @override
-  List<CipherParameters> get supportedParameters => [
-        CipherParameters(BlockCipherMode.CBC, PlainTextPadding.PKCS5),
-      ];
-
-  /// Creates an AES cipher with specified secretKey and mode/padding
-  AESCipher(SecretKey secretKey, CipherParameters parameters) {
-    if (secretKey.algorithm != CipherAlgorithm.AES.name) {
-      List<int> _supportedSizes = [128, 192, 256];
-      if (!_supportedSizes.contains(secretKey.encoded.length)) {
-        throw CipherInitException("Invalid key length!");
-      }
-    } else if (!supportedParameters.contains(parameters)) {
-      throw CipherInitException("Invalid cipher parameters.");
-    }
-    _sk = secretKey;
-    _params = parameters;
-    _isInit = true;
-  }
-
-  /// Generates a secret key of specified size, then creates an AES cipher.
-  static Future<AESCipher> generate(
-      AESKeySize size, CipherParameters parameters) async {
-    SecretKey _sk = await SecretKey.generate(size.length, CipherAlgorithm.AES);
-    return AESCipher(_sk, parameters);
-  }
-
-  @override
-  Future<CipherText> encrypt(Uint8List data) async {
-    if (!_isInit) {
-      throw CipherInitException('Cipher not properly initialized.');
-    } else if (_sk == null || _sk.isEmpty) {
-      throw CipherInitException('Invalid key size.');
-    }
-    Uint8List dataToEncrypt;
-    int maxSize = 33554432;
-    AESCipherText cipherText = AESCipherText.empty();
-    // If data is bigger than 32mB -> split in chunks
-    if (data.length > maxSize) {
-      int chunkNb = (data.length / maxSize).ceil();
-      for (var i = 0; i < chunkNb; i++) {
-        if (i < (chunkNb - 1)) {
-          dataToEncrypt = data.sublist(i * maxSize, (i + 1) * maxSize);
-        } else {
-          dataToEncrypt = data.sublist(i * maxSize);
-        }
-        List<Uint8List> c = await Platform()
-            .encrypt(dataToEncrypt, _sk.encoded, algorithm, _params);
-        cipherText.append(c[0], c[1]);
-      }
-    } else {
-      List<Uint8List> c =
-          await Platform().encrypt(data, _sk.encoded, algorithm, _params);
-      cipherText.append(c[0], c[1]);
-    }
-    return cipherText;
-  }
-
-  @override
-  Future<Uint8List> decrypt(CipherText cipherText) async {
-    if (cipherText.algorithm != CipherAlgorithm.AES) {
-      throw DecryptionException("This cipher text's algorithm is not AES: " +
-          cipherText.algorithm.name +
-          "\nYou must use an AESCipherText.");
-    } else if (!_isInit) {
-      throw CipherInitException('Cipher not properly initialized.');
-    } else if (_sk == null || _sk.isEmpty) {
-      throw CipherInitException('Invalid key size.');
-    } else if (cipherText.bytes.length != cipherText.iv.length) {
-      throw DecryptionException(
-          "This cipher text's bytes chunks length is not the same as iv chunks length");
-    }
-
-    BytesBuilder decryptedData = BytesBuilder();
-    if (cipherText.size > 1) {
-      for (var i = 0; i < cipherText.size; i++) {
-        List<Uint8List> payload = [cipherText.bytes[i], cipherText.iv[i]];
-        Uint8List d =
-            await Platform().decrypt(payload, _sk.encoded, algorithm, _params);
-        decryptedData.add(d);
-      }
-    } else {
-      List<Uint8List> payload = [cipherText.bytes[0], cipherText.iv[0]];
-      Uint8List d =
-          await Platform().decrypt(payload, _sk.encoded, algorithm, _params);
-      decryptedData.add(d);
-    }
-    return decryptedData.toBytes();
-  }
-}
-
-class AESCipherText implements CipherText {
-  List<Uint8List> _bytes;
-  List<Uint8List> _iv;
-
-  @override
-  CipherAlgorithm get algorithm => CipherAlgorithm.AES;
-
-  @override
-  List<Uint8List> get bytes => _bytes;
-
-  @override
-  List<Uint8List> get iv => _iv;
-
-  @override
-  int get size => _bytes.length;
-
-  AESCipherText(Uint8List bytes, Uint8List iv) {
-    _bytes = List.from([bytes]);
-    _iv = List.from([iv]);
-  }
-
-  AESCipherText.from(List<Uint8List> bytes, List<Uint8List> iv) {
-    _bytes = bytes;
-    _iv = iv;
-  }
-
-  AESCipherText.empty() {
-    _bytes = <Uint8List>[];
-    _iv = <Uint8List>[];
-  }
-
-  void append(Uint8List bytes, Uint8List iv) {
-    _bytes.add(bytes);
-    _iv.add(iv);
-  }
-
-  /// Returns this ciphertext in [Uint8List] format.
-  ///
-  /// Encoding
-  /// --------
-  /// Uint8List encoding is : IV_1 + M_1 + IV_2 + M_2 + ... + IV_n + M_n
-  ///
-  /// Where **IV_k** is the IV of the cipher text **M_k**
-  ///
-  /// IV is **always** 16 bytes long, And the **M** are all max
-  /// size (of 33 554 480 bytes) except the last one which is shorter than the others.
-  Uint8List encode() {
-    BytesBuilder builder = BytesBuilder();
-    for (var i = 0; i < size; i++) {
-      builder.add(_iv[i]);
-      builder.add(_bytes[i]);
-    }
-
-    return builder.toBytes();
-  }
-
-  /// Transforms a [Uint8List] to a *NativeCrypto* cipherText.
-  ///
-  /// Decoding
-  /// --------
-  /// See the list as a chain of chunks (IV and Messages)
-  /// `[IV][MESSAGE][IV][MESSAGE] ... [IV][MESSA...]`
-  ///
-  /// Chunk length is IV length + Message length = 16 + 33 554 480 bytes
-  void decode(Uint8List src) {
-    ByteBuffer buffer = src.buffer;
-
-    int chunkSize = 16 + 33554480;
-    int chunkNb = (buffer.lengthInBytes / chunkSize).ceil();
-
-    for (var i = 0; i < chunkNb; i++) {
-      _iv.add(buffer.asUint8List(i * chunkSize, 16));
-      if (i < (chunkNb - 1)) {
-        _bytes.add(buffer.asUint8List(16 + i * chunkSize, 33554480));
-      } else {
-        _bytes.add(buffer.asUint8List(16 + i * chunkSize));
-      }
-    }
-  }
-}

lib/src/utils.dart

@@ -1,141 +0,0 @@
-// Copyright (c) 2020
-// Author: Hugo Pointcheval
-
-import 'package:flutter/foundation.dart';
-
-import 'cipher.dart';
-import 'digest.dart';
-import 'exceptions.dart';
-import 'kem.dart';
-import 'keyderivation.dart';
-
-extension HashAlgorithmExtension on HashAlgorithm {
-  String get name => describeEnum(this).toLowerCase();
-}
-
-extension KdfAlgorithmExtension on KdfAlgorithm {
-  String get name => describeEnum(this).toLowerCase();
-}
-
-extension CipherAlgorithmExtension on CipherAlgorithm {
-  String get name => describeEnum(this).toLowerCase();
-}
-
-extension KemAlgorithmExtension on KemAlgorithm {
-  String get name => describeEnum(this).toLowerCase();
-}
-
-extension BlockCipherModeExtension on BlockCipherMode {
-  String get name => describeEnum(this).toLowerCase();
-}
-
-extension PlainTextPaddingExtension on PlainTextPadding {
-  String get name => describeEnum(this).toLowerCase();
-}
-
-class Utils {
-  /// Returns [HashAlgorithm] from his name.
-  static HashAlgorithm getHashAlgorithm(String algorithm) {
-    String _query = algorithm.toLowerCase();
-    for (HashAlgorithm h in HashAlgorithm.values) {
-      if (_query == h.name) {
-        return h;
-      }
-    }
-    throw UtilsException("Unknown hash algorithm!");
-  }
-
-  /// Returns all available [HashAlgorithm] as String list
-  static List<String> getAvailableHashAlgorithms() {
-    List<String> _res = [];
-    for (HashAlgorithm h in HashAlgorithm.values) {
-      _res.add(h.name);
-    }
-    return _res;
-  }
-
-  /// Returns [KdfAlgorithm] from his name.
-  static KdfAlgorithm getKdfAlgorithm(String algorithm) {
-    String _query = algorithm.toLowerCase();
-    for (KdfAlgorithm h in KdfAlgorithm.values) {
-      if (_query == h.name) {
-        return h;
-      }
-    }
-    throw UtilsException("Unknown key derivation algorithm!");
-  }
-
-  /// Returns all available [KdfAlgorithm] as String list
-  static List<String> getAvailableKdfAlgorithms() {
-    List<String> _res = [];
-    for (KdfAlgorithm h in KdfAlgorithm.values) {
-      _res.add(h.name);
-    }
-    return _res;
-  }
-
-  /// Returns [CipherAlgorithm] from his name.
-  static CipherAlgorithm getCipherAlgorithm(String algorithm) {
-    String _query = algorithm.toLowerCase();
-    for (CipherAlgorithm c in CipherAlgorithm.values) {
-      if (_query == c.name) {
-        return c;
-      }
-    }
-    throw UtilsException("Unknown cipher algorithm!");
-  }
-
-  /// Returns all available [CipherAlgorithm] as String list
-  static List<String> getAvailableCipherAlgorithms() {
-    List<String> _res = [];
-    for (CipherAlgorithm c in CipherAlgorithm.values) {
-      _res.add(c.name);
-    }
-    return _res;
-  }
-
-  /// Returns [KemAlgorithm] from his name.
-  static KemAlgorithm getKemAlgorithm(String algorithm) {
-    String _query = algorithm.toLowerCase();
-    for (KemAlgorithm k in KemAlgorithm.values) {
-      if (_query == k.name) {
-        return k;
-      }
-    }
-    throw UtilsException("Unknown KEM algorithm!");
-  }
-
-  /// Returns all available [KemAlgorithm] as String list
-  static List<String> getAvailableKemAlgorithms() {
-    List<String> _res = [];
-    for (KemAlgorithm k in KemAlgorithm.values) {
-      _res.add(k.name);
-    }
-    return _res;
-  }
-
-  /// Returns [CipherParameters] from string.
-  ///
-  /// For example, `CBC/PKCS5` gives a CipherParameters with
-  /// CBC mode and PKCS5 as padding.
-  static CipherParameters getCipherParameters(String parameters) {
-    List<String> _query = parameters.toLowerCase().split("/");
-    BlockCipherMode _mode;
-    PlainTextPadding _padding;
-    for (BlockCipherMode b in BlockCipherMode.values) {
-      if (_query[0] == b.name) {
-        _mode = b;
-      }
-    }
-    for (PlainTextPadding p in PlainTextPadding.values) {
-      if (_query[1] == p.name) {
-        _padding = p;
-      }
-    }
-    if (_mode == null || _padding == null) {
-      throw UtilsException("Unknown parameters!");
-    } else {
-      return CipherParameters(_mode, _padding);
-    }
-  }
-}

native_crypto/.gitignore

@@ -0,0 +1,389 @@
+# File created using '.gitignore Generator' for Visual Studio Code: https://bit.ly/vscode-gig
+
+# Created by https://www.toptal.com/developers/gitignore/api/visualstudiocode,macos,dart,flutter,intellij+all,kotlin,linux,swift,windows
+# Edit at https://www.toptal.com/developers/gitignore?templates=visualstudiocode,macos,dart,flutter,intellij+all,kotlin,linux,swift,windows
+
+### Dart ###
+# See https://www.dartlang.org/guides/libraries/private-files
+
+# Files and directories created by pub
+.dart_tool/
+.packages
+build/
+# If you're building an application, you may want to check-in your pubspec.lock
+pubspec.lock
+
+# Directory created by dartdoc
+# If you don't generate documentation locally you can remove this line.
+doc/api/
+
+# dotenv environment variables file
+.env*
+
+# Avoid committing generated Javascript files:
+*.dart.js
+*.info.json      # Produced by the --dump-info flag.
+*.js             # When generated by dart2js. Don't specify *.js if your
+                 # project includes source files written in JavaScript.
+*.js_
+*.js.deps
+*.js.map
+
+.flutter-plugins
+.flutter-plugins-dependencies
+
+### Dart Patch ###
+# dotenv environment variables file
+.env
+
+### Flutter ###
+# Flutter/Dart/Pub related
+**/doc/api/
+.fvm/
+.pub-cache/
+.pub/
+coverage/
+lib/generated_plugin_registrant.dart
+# For library packages, don’t commit the pubspec.lock file.
+# Regenerating the pubspec.lock file lets you test your package against the latest compatible versions of its dependencies.
+# See https://dart.dev/guides/libraries/private-files#pubspeclock
+#pubspec.lock
+
+# Android related
+**/android/**/gradle-wrapper.jar
+**/android/.gradle
+**/android/captures/
+**/android/gradlew
+**/android/gradlew.bat
+**/android/key.properties
+**/android/local.properties
+**/android/**/GeneratedPluginRegistrant.java
+
+# iOS/XCode related
+**/ios/**/*.mode1v3
+**/ios/**/*.mode2v3
+**/ios/**/*.moved-aside
+**/ios/**/*.pbxuser
+**/ios/**/*.perspectivev3
+**/ios/**/*sync/
+**/ios/**/.sconsign.dblite
+**/ios/**/.tags*
+**/ios/**/.vagrant/
+**/ios/**/DerivedData/
+**/ios/**/Icon?
+**/ios/**/Pods/
+**/ios/**/.symlinks/
+**/ios/**/profile
+**/ios/**/xcuserdata
+**/ios/.generated/
+**/ios/Flutter/.last_build_id
+**/ios/Flutter/App.framework
+**/ios/Flutter/Flutter.framework
+**/ios/Flutter/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+
+### Intellij+all ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Intellij+all Patch ###
+# Ignores the whole .idea folder and all .iml files
+# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
+
+.idea/
+
+# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
+
+*.iml
+modules.xml
+.idea/misc.xml
+*.ipr
+
+# Sonarlint plugin
+.idea/sonarlint
+
+### Kotlin ###
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+### Linux ###
+*~
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### Swift ###
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+
+## User settings
+xcuserdata/
+
+## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9)
+*.xcscmblueprint
+*.xccheckout
+
+## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4)
+DerivedData/
+*.moved-aside
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+
+## Obj-C/Swift specific
+*.hmap
+
+## App packaging
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+# Package.resolved
+# *.xcodeproj
+# Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata
+# hence it is not needed unless you have added a package configuration file to your project
+# .swiftpm
+
+.build/
+
+# CocoaPods
+# We recommend against adding the Pods directory to your .gitignore. However
+# you should judge for yourself, the pros and cons are mentioned at:
+# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
+# Pods/
+# Add this line if you want to avoid checking in source code from the Xcode workspace
+# *.xcworkspace
+
+# Carthage
+# Add this line if you want to avoid checking in source code from Carthage dependencies.
+# Carthage/Checkouts
+
+Carthage/Build/
+
+# Accio dependency management
+Dependencies/
+.accio/
+
+# fastlane
+# It is recommended to not store the screenshots in the git repo.
+# Instead, use fastlane to re-generate the screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://docs.fastlane.tools/best-practices/source-control/#source-control
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots/**/*.png
+fastlane/test_output
+
+# Code Injection
+# After new code Injection tools there's a generated folder /iOSInjectionProject
+# https://github.com/johnno1962/injectionforxcode
+
+iOSInjectionProject/
+
+### VisualStudioCode ###
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+### VisualStudioCode Patch ###
+# Ignore all local history of files
+.history
+.ionide
+
+# Support for Project snippet scope
+!.vscode/*.code-snippets
+
+### Windows ###
+# Windows thumbnail cache files
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+
+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# End of https://www.toptal.com/developers/gitignore/api/visualstudiocode,macos,dart,flutter,intellij+all,kotlin,linux,swift,windows
+
+# Custom rules (everything added below won't be overriden by 'Generate .gitignore File' if you use 'Update' option)
+

native_crypto/.metadata

@@ -4,7 +4,7 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: f139b11009aeb8ed2a3a3aa8b0066e482709dde3
+  revision: cf4400006550b70f28e4b4af815151d1e74846c6
   channel: stable
 
 project_type: plugin

native_crypto/CHANGELOG.md

@@ -0,0 +1,3 @@
+## 0.0.1
+
+* TODO: Describe initial release.

native_crypto/LICENSE

@@ -0,0 +1 @@
+TODO: Add your license here.

native_crypto/README.md

@@ -0,0 +1,18 @@
+# native_crypto
+
+A new flutter plugin project.
+
+## Getting Started
+
+This project is a starting point for a Flutter
+[plug-in package](https://flutter.dev/developing-packages/),
+a specialized package that includes platform-specific implementation code for
+Android and/or iOS.
+
+For help getting started with Flutter, view our
+[online documentation](https://flutter.dev/docs), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.
+
+The plugin project was generated without specifying the `--platforms` flag, no platforms are currently supported.
+To add platforms, run `flutter create -t plugin --platforms <platforms> .` under the same
+directory. You can also find a detailed instruction on how to add platforms in the `pubspec.yaml` at https://flutter.dev/docs/development/packages-and-plugins/developing-packages#plugin-platforms.

native_crypto/analysis_options.yaml

@@ -0,0 +1,4 @@
+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

native_crypto/example/.gitignore

@@ -22,6 +22,7 @@
 
 # Flutter/Dart/Pub related
 **/doc/api/
+**/ios/Flutter/.last_build_id
 .dart_tool/
 .flutter-plugins
 .flutter-plugins-dependencies
@@ -33,5 +34,13 @@
 # Web related
 lib/generated_plugin_registrant.dart
 
-# Exceptions to above rules.
+# Symbolication related
-!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release

native_crypto/example/.metadata

@@ -4,7 +4,7 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: f139b11009aeb8ed2a3a3aa8b0066e482709dde3
+  revision: cf4400006550b70f28e4b4af815151d1e74846c6
   channel: stable
 
 project_type: app

native_crypto/example/analysis_options.yaml

@@ -0,0 +1,29 @@
+# This file configures the analyzer, which statically analyzes Dart code to
+# check for errors, warnings, and lints.
+#
+# The issues identified by the analyzer are surfaced in the UI of Dart-enabled
+# IDEs (https://dart.dev/tools#ides-and-editors). The analyzer can also be
+# invoked from the command line by running `flutter analyze`.
+
+# The following line activates a set of recommended lints for Flutter apps,
+# packages, and plugins designed to encourage good coding practices.
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # The lint rules applied to this project can be customized in the
+  # section below to disable rules from the `package:flutter_lints/flutter.yaml`
+  # included above or to enable additional rules. A list of all available lints
+  # and their documentation is published at
+  # https://dart-lang.github.io/linter/lints/index.html.
+  #
+  # Instead of disabling a lint rule for the entire project in the
+  # section below, it can also be suppressed for a single line of code
+  # or a specific dart file by using the `// ignore: name_of_lint` and
+  # `// ignore_for_file: name_of_lint` syntax on the line or in the file
+  # producing the lint.
+  rules:
+    # avoid_print: false  # Uncomment to disable the `avoid_print` rule
+    # prefer_single_quotes: true  # Uncomment to enable the `prefer_single_quotes` rule
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

native_crypto/example/android/.gitignore

@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

native_crypto/example/android/app/build.gradle

@@ -26,24 +26,28 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion flutter.compileSdkVersion
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
     }
 
-    lintOptions {
-        disable 'InvalidPackage'
-    }
-
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "fr.pointcheval.native_crypto_example"
-        minSdkVersion 16
+        minSdkVersion flutter.minSdkVersion
-        targetSdkVersion 28
+        targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
-        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
 
     buildTypes {
@@ -61,7 +65,4 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'androidx.test:runner:1.1.1'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
 }

native_crypto/example/android/app/src/main/AndroidManifest.xml

@@ -1,21 +1,25 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="fr.pointcheval.native_crypto_example">
-    <!-- io.flutter.app.FlutterApplication is an android.app.Application that
+   <application
-         calls FlutterMain.startInitialization(this); in its onCreate method.
-         In most cases you can leave this as-is, but you if you want to provide
-         additional functionality it is fine to subclass or reimplement
-         FlutterApplication and put your custom class here. -->
-    <application
-        android:name="io.flutter.app.FlutterApplication"
         android:label="native_crypto_example"
+        android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:launchMode="singleTop"
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>

native_crypto/example/android/app/src/main/kotlin/fr/pointcheval/native_crypto_example/MainActivity.kt

@@ -0,0 +1,6 @@
+package fr.pointcheval.native_crypto_example
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}

native_crypto/example/android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

native_crypto/example/android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

native_crypto/example/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

native_crypto/example/android/build.gradle

@@ -2,11 +2,11 @@ buildscript {
     ext.kotlin_version = '1.3.50'
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.1'
+        classpath 'com.android.tools.build:gradle:4.1.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
@@ -14,7 +14,7 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 

native_crypto/example/android/gradle.properties

@@ -1,4 +1,3 @@
 org.gradle.jvmargs=-Xmx1536M
-android.enableR8=true
 android.useAndroidX=true
 android.enableJetifier=true

native_crypto/example/android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Fri Jun 23 08:50:38 CEST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip

native_crypto/example/android/settings.gradle

@@ -0,0 +1,11 @@
+include ':app'
+
+def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
+def properties = new Properties()
+
+assert localPropertiesFile.exists()
+localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
+
+def flutterSdkPath = properties.getProperty("flutter.sdk")
+assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"

native_crypto/example/ios/.gitignore

@@ -1,3 +1,4 @@
+**/dgph
 *.mode1v3
 *.mode2v3
 *.moved-aside
@@ -18,6 +19,7 @@ Flutter/App.framework
 Flutter/Flutter.framework
 Flutter/Flutter.podspec
 Flutter/Generated.xcconfig
+Flutter/ephemeral/
 Flutter/app.flx
 Flutter/app.zip
 Flutter/flutter_assets/

native_crypto/example/ios/Flutter/AppFrameworkInfo.plist

@@ -3,7 +3,7 @@
 <plist version="1.0">
 <dict>
   <key>CFBundleDevelopmentRegion</key>
-  <string>$(DEVELOPMENT_LANGUAGE)</string>
+  <string>en</string>
   <key>CFBundleExecutable</key>
   <string>App</string>
   <key>CFBundleIdentifier</key>
@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>8.0</string>
+  <string>9.0</string>
 </dict>
 </plist>

native_crypto/example/ios/Flutter/Debug.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include "Generated.xcconfig"

native_crypto/example/ios/Flutter/Release.xcconfig

@@ -0,0 +1,2 @@
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include "Generated.xcconfig"

native_crypto/example/ios/Podfile

@@ -0,0 +1,41 @@
+# Uncomment this line to define a global platform for your project
+# platform :ios, '9.0'
+
+# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
+ENV['COCOAPODS_DISABLE_STATS'] = 'true'
+
+project 'Runner', {
+  'Debug' => :debug,
+  'Profile' => :release,
+  'Release' => :release,
+}
+
+def flutter_root
+  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
+  unless File.exist?(generated_xcode_build_settings_path)
+    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
+  end
+
+  File.foreach(generated_xcode_build_settings_path) do |line|
+    matches = line.match(/FLUTTER_ROOT\=(.*)/)
+    return matches[1].strip if matches
+  end
+  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
+end
+
+require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
+
+flutter_ios_podfile_setup
+
+target 'Runner' do
+  use_frameworks!
+  use_modular_headers!
+
+  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
+end
+
+post_install do |installer|
+  installer.pods_project.targets.each do |target|
+    flutter_additional_ios_build_settings(target)
+  end
+end

native_crypto/example/ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,484 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 50;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
+		74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 74858FAE1ED2DC5600515810 /* AppDelegate.swift */; };
+		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
+		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
+		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		9705A1C41CF9048500538489 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
+		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
+		74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Runner-Bridging-Header.h"; sourceTree = "<group>"; };
+		74858FAE1ED2DC5600515810 /* AppDelegate.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AppDelegate.swift; sourceTree = "<group>"; };
+		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
+		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
+		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
+		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		97C146FB1CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/Main.storyboard; sourceTree = "<group>"; };
+		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
+		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
+		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		97C146EB1CF9000F007C117D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		9740EEB11CF90186004384FC /* Flutter */ = {
+			isa = PBXGroup;
+			children = (
+				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
+				9740EEB21CF90195004384FC /* Debug.xcconfig */,
+				7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
+				9740EEB31CF90195004384FC /* Generated.xcconfig */,
+			);
+			name = Flutter;
+			sourceTree = "<group>";
+		};
+		97C146E51CF9000F007C117D = {
+			isa = PBXGroup;
+			children = (
+				9740EEB11CF90186004384FC /* Flutter */,
+				97C146F01CF9000F007C117D /* Runner */,
+				97C146EF1CF9000F007C117D /* Products */,
+			);
+			sourceTree = "<group>";
+		};
+		97C146EF1CF9000F007C117D /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				97C146EE1CF9000F007C117D /* Runner.app */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		97C146F01CF9000F007C117D /* Runner */ = {
+			isa = PBXGroup;
+			children = (
+				97C146FA1CF9000F007C117D /* Main.storyboard */,
+				97C146FD1CF9000F007C117D /* Assets.xcassets */,
+				97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */,
+				97C147021CF9000F007C117D /* Info.plist */,
+				1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */,
+				1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */,
+				74858FAE1ED2DC5600515810 /* AppDelegate.swift */,
+				74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */,
+			);
+			path = Runner;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		97C146ED1CF9000F007C117D /* Runner */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */;
+			buildPhases = (
+				9740EEB61CF901F6004384FC /* Run Script */,
+				97C146EA1CF9000F007C117D /* Sources */,
+				97C146EB1CF9000F007C117D /* Frameworks */,
+				97C146EC1CF9000F007C117D /* Resources */,
+				9705A1C41CF9048500538489 /* Embed Frameworks */,
+				3B06AD1E1E4923F5004D2608 /* Thin Binary */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = Runner;
+			productName = Runner;
+			productReference = 97C146EE1CF9000F007C117D /* Runner.app */;
+			productType = "com.apple.product-type.application";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		97C146E61CF9000F007C117D /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 1300;
+				ORGANIZATIONNAME = "";
+				TargetAttributes = {
+					97C146ED1CF9000F007C117D = {
+						CreatedOnToolsVersion = 7.3.1;
+						LastSwiftMigration = 1100;
+					};
+				};
+			};
+			buildConfigurationList = 97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */;
+			compatibilityVersion = "Xcode 9.3";
+			developmentRegion = en;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+				Base,
+			);
+			mainGroup = 97C146E51CF9000F007C117D;
+			productRefGroup = 97C146EF1CF9000F007C117D /* Products */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				97C146ED1CF9000F007C117D /* Runner */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		97C146EC1CF9000F007C117D /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */,
+				3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */,
+				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
+				97C146FC1CF9000F007C117D /* Main.storyboard in Resources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXShellScriptBuildPhase section */
+		3B06AD1E1E4923F5004D2608 /* Thin Binary */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "Thin Binary";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" embed_and_thin";
+		};
+		9740EEB61CF901F6004384FC /* Run Script */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "Run Script";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
+		};
+/* End PBXShellScriptBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		97C146EA1CF9000F007C117D /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				74858FAF1ED2DC5600515810 /* AppDelegate.swift in Sources */,
+				1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin PBXVariantGroup section */
+		97C146FA1CF9000F007C117D /* Main.storyboard */ = {
+			isa = PBXVariantGroup;
+			children = (
+				97C146FB1CF9000F007C117D /* Base */,
+			);
+			name = Main.storyboard;
+			sourceTree = "<group>";
+		};
+		97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */ = {
+			isa = PBXVariantGroup;
+			children = (
+				97C147001CF9000F007C117D /* Base */,
+			);
+			name = LaunchScreen.storyboard;
+			sourceTree = "<group>";
+		};
+/* End PBXVariantGroup section */
+
+/* Begin XCBuildConfiguration section */
+		249021D3217E4FDB00AE95B9 /* Profile */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Profile;
+		};
+		249021D4217E4FDB00AE95B9 /* Profile */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = 6Z5P8GG96U;
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = fr.pointcheval.nativeCryptoExample;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Profile;
+		};
+		97C147031CF9000F007C117D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
+		97C147041CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = iphoneos;
+				SUPPORTED_PLATFORMS = iphoneos;
+				SWIFT_COMPILATION_MODE = wholemodule;
+				SWIFT_OPTIMIZATION_LEVEL = "-O";
+				TARGETED_DEVICE_FAMILY = "1,2";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		97C147061CF9000F007C117D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = 6Z5P8GG96U;
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = fr.pointcheval.nativeCryptoExample;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Debug;
+		};
+		97C147071CF9000F007C117D /* Release */ = {
+			isa = XCBuildConfiguration;
+			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_ENABLE_MODULES = YES;
+				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = 6Z5P8GG96U;
+				ENABLE_BITCODE = NO;
+				INFOPLIST_FILE = Runner/Info.plist;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = fr.pointcheval.nativeCryptoExample;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OBJC_BRIDGING_HEADER = "Runner/Runner-Bridging-Header.h";
+				SWIFT_VERSION = 5.0;
+				VERSIONING_SYSTEM = "apple-generic";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		97C146E91CF9000F007C117D /* Build configuration list for PBXProject "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147031CF9000F007C117D /* Debug */,
+				97C147041CF9000F007C117D /* Release */,
+				249021D3217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				97C147061CF9000F007C117D /* Debug */,
+				97C147071CF9000F007C117D /* Release */,
+				249021D4217E4FDB00AE95B9 /* Profile */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

native_crypto/example/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

native_crypto/example/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

native_crypto/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,8 +27,6 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -38,8 +36,8 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
+      <Testables>
-      </AdditionalOptions>
+      </Testables>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -61,8 +59,6 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Profile"

native_crypto/example/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>