decrypt static method
Implementation
static String? decrypt({String? secretkey = _sharedkey, String? vector = _sharedkey, String? text})
{
if (text == null) return null;
String? decrypted;
Uint8List encryptedText = base64Decode(text);
Uint8List key = Uint8List.fromList(utf8.encode(secretkey!));
Uint8List iv = Uint8List.fromList(utf8.encode(vector!));
final CBCBlockCipher cbcCipher = CBCBlockCipher(AESEngine());
final ParametersWithIV<KeyParameter> ivParams = ParametersWithIV<KeyParameter>(KeyParameter(key), iv);
final PaddedBlockCipherParameters<ParametersWithIV<KeyParameter>, CipherParameters?>
paddingParams = PaddedBlockCipherParameters<ParametersWithIV<KeyParameter>, CipherParameters?>(ivParams, null);
final PaddedBlockCipherImpl cipher = PaddedBlockCipherImpl(PKCS7Padding(), cbcCipher);
cipher.init(false, paddingParams);
try
{
Uint8List clearText = cipher.process(encryptedText);
decrypted = String.fromCharCodes(clearText);
}
catch(e)
{
Log().exception(e);
}
return decrypted;
}