lazyaesgcm

Lazy AES-GCM in Flutter base on cryptography

Algorithm details

• Key exchange: X25519
• Encryption: AES
• Authentication: GCM

Usage

• pubspec.yml

dependencies:
  lazyaesgcm: ^1.0.0

• Dart

final lazyaesgcm = LazyAesGcm.instance;

How to use

• Generate KeyPair

final keyPair = await KeyPair.newKeyPair();

• Key Exchange & Shared Key

final clientKeyPair = await KeyPair.newKeyPair();
final serverKeyPair = await KeyPair.newKeyPair();

final clientSharedKey = await clientKeyPair.sharedKey(serverKeyPair.pk);

• Encrypt

final lazyaesgcm = LazyAesGcm.instance;
final sharedKey = await clientKeyPair.sharedKey(serverKeyPair.pk);
const plaintext = '{"message": "Hi"}';

final ciphertext = await lazyaesgcm.encrypt(plaintext, sharedKey);

• Decrypt

final lazyaesgcm = LazyAesGcm.instance;
final sharedKey = await clientKeyPair.sharedKey(serverKeyPair.pk);
const ciphertext = '1ec54672d8ef2cca351';

final plaintext = await lazyaesgcm.decrypt(ciphertext, sharedKey);