AesCbcEncryptor constructor
Creates an encryptor over cipher starting from iv (16 bytes).
Implementation
AesCbcEncryptor(this._cipher, Uint8List iv) : _prev = Uint8List(16) {
if (iv.length != 16) {
throw ArgumentError.value(iv.length, 'iv', 'must be 16 bytes');
}
_prev.setAll(0, iv);
}