NativeCrypto
Fast crypto functions for Flutter.
Why 🤔
Because I faced a performance issue when I was using PointyCastle.
It's quite simple, judge for yourself, these are times for AES256 encryption on an Android device.
| Size | PointyCastle |
|---|---|
| 100 kB | 190 ms |
| 200 kB | 314 ms |
| 300 kB | 1138 ms |
| 400 kB | 2781 ms |
| 500 kB | 4691 ms |
| 600 kB | 7225 ms |
| 700 kB | 10264 ms |
| 800 kB | 13582 ms |
| 900 kB | 17607 ms |
We notice that these times, in addition to being far too big, are not even linear.
Performances ⏱
| Size | NativeCrypto |
|---|---|
| 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 |
How 🔬
Using the native implementation of the crypto libs available on each OS.
For Android:
For iOS:
Todo 🚀
- ✅ Implement working cross platform encryption/decryption.
- Complete AES implementation (all key sizes, padding, modes...).
- Improve performances.
- Add ChaCha20.
- ... add asym crypto support.