58 lines
1.4 KiB
Markdown
58 lines
1.4 KiB
Markdown
# NativeCrypto
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Fast crypto functions for Flutter.
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## Why 🤔
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Because I faced a performance issue when I was using **PointyCastle**.
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It's quite simple, judge for yourself, these are times for AES256 encryption on an Android device.
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| Size | PointyCastle |
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|------|--------------|
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| 100 kB | 190 ms
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| 200 kB | 314 ms
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| 300 kB | 1138 ms
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| 400 kB | 2781 ms
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| 500 kB | 4691 ms
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| 600 kB | 7225 ms
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| 700 kB | 10264 ms
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| 800 kB | 13582 ms
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| 900 kB | 17607 ms
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> We notice that these times, in addition to being far too big, are not even linear.
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## Performances ⏱
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| Size | NativeCrypto |
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|------|--------------|
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| 1 mB | 27 ms
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| 2 mB | 43 ms
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| 3 mB | 78 ms
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| 4 mB | 93 ms
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| 5 mB | 100 ms
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| 10 mB | 229 ms
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| 50 mB | 779 ms
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## How 🔬
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Using the native implementation of the crypto libs available on each OS.
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For Android:
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* [javax.crypto](https://docs.oracle.com/javase/7/docs/api/javax/crypto/package-summary.html)
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* [java.security](https://docs.oracle.com/javase/7/docs/api/java/security/package-summary.html)
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For iOS:
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* [CommonCrypto](https://developer.apple.com/library/archive/documentation/Security/Conceptual/cryptoservices/Introduction/Introduction.html)
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* [CryptoKit](https://developer.apple.com/documentation/cryptokit/)
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## Todo 🚀
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* ✅ Implement working cross platform AES encryption/decryption.
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* ✅ Different key sizes support.
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* ✅ Improve performances.
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* Add other ciphers.
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* ... add asym crypto support.
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