diff --git a/packages/native_crypto_ios/ios/Classes/NativeCrypto.swift b/packages/native_crypto_ios/ios/Classes/NativeCrypto.swift
index d9e8dc1..ac94c52 100644
--- a/packages/native_crypto_ios/ios/Classes/NativeCrypto.swift
+++ b/packages/native_crypto_ios/ios/Classes/NativeCrypto.swift
@@ -25,7 +25,6 @@ public class NativeCrypto: NSObject, NativeCryptoAPI {
         case .sha256: return FlutterStandardTypedData(bytes: Data(HMAC<SHA256>(key: symmetricKey).finalize()))
         case .sha384: return FlutterStandardTypedData(bytes: Data(HMAC<SHA384>(key: symmetricKey).finalize()))
         case .sha512: return FlutterStandardTypedData(bytes: Data(HMAC<SHA512>(key: symmetricKey).finalize()))
-        @unknown default: fatalError("Unknown algorithm")
         }
     }
     
diff --git a/packages/native_crypto_ios/ios/Classes/utils/HashAlgorithmParser.swift b/packages/native_crypto_ios/ios/Classes/utils/HashAlgorithmParser.swift
index 52e160e..d097a56 100644
--- a/packages/native_crypto_ios/ios/Classes/utils/HashAlgorithmParser.swift
+++ b/packages/native_crypto_ios/ios/Classes/utils/HashAlgorithmParser.swift
@@ -15,7 +15,6 @@ public class HashAlgorithmParser {
         case .sha256: return SHA256.init()
         case .sha384: return SHA384.init()
         case .sha512: return SHA512.init()
-        @unknown default: fatalError("Unknown algorithm")
         }
     }
     
@@ -24,7 +23,6 @@ public class HashAlgorithmParser {
         case .sha256: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA256)
         case .sha384: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA384)
         case .sha512: return CCPBKDFAlgorithm(kCCPRFHmacAlgSHA512)
-        @unknown default: fatalError("Unknown algorithm")
         }
     }
 
diff --git a/packages/native_crypto_ios/ios/Classes/utils/Task.swift b/packages/native_crypto_ios/ios/Classes/utils/Task.swift
deleted file mode 100644
index 4a9d049..0000000
--- a/packages/native_crypto_ios/ios/Classes/utils/Task.swift
+++ /dev/null
@@ -1,45 +0,0 @@
-import Foundation
-
-class Task<T> {
-    
-    var task: () throws -> T
-    private var successful: Bool = false
-    private var result: T? = nil
-    private var exception: Error? = nil
-    
-    init(task: @escaping () throws -> T) {
-        self.task = task
-    }
-    
-    func isSuccessful() -> Bool {
-        return successful
-    }
-    
-    func getResult() -> T? {
-        return result
-    }
-    
-    func getException() -> Error {
-        if (exception != nil) {
-            return exception!
-        } else {
-            return NativeCryptoError.unknownError()
-        }
-    }
-    
-    func call() {
-        do {
-            result = try task()
-            exception = nil
-            successful = true
-        } catch {
-            exception = error
-            result = nil
-            successful = false
-        }
-    }
-    
-    func finalize(callback: (_ task: Task<T>) -> Void) {
-        callback(self)
-    }
-}