flutter: error: type 'String' is not a subtype of type 'Encrypted' of 'encrypted'

Question

I'm using : encrypt: ^3.2.0 I'm using AES encryption in flutter but when i decrypt my encrypted value it's give me this type of Error.

flutter: error: type 'String' is not a subtype of type 'Encrypted' of 'encrypted'

Future<String> getEncryption(String text) async {
    String enc = '';

    final SharedPreferences strFamilyPass =
        await SharedPreferences.getInstance();
    strFamilyPass.getString('family');

    final String keys = await getKEY();
    final dynamic key = Key.fromUtf8(keys);
    final dynamic iv = IV.fromLength(16);
    final dynamic encrypter = Encrypter(AES(key));
    final String salt = await getSalt();
    enc = '$salt${encrypter.encrypt(text, iv: iv).base64}';
    print('encryption $enc');
    return enc;
  }

  Future<String> getDecryption(String text) async {
    String dec = '';
    final String keys = await getKEY();
    final dynamic key = Key.fromUtf8(keys);
    final dynamic iv = IV.fromLength(16);
    final encrypter = Encrypter(AES(key));
    final String salt = await getSalt();

    dec = '$salt${encrypter.decrypt(text, iv: iv)}';// it give's me error right here
    print('decy $dec');
    return dec;
  }

Solution 1

The documentation said It all:

String decrypt(Encrypted encrypted, {IV iv})

You passed a String to Encrypted, and Encrypted is not a subtype of String.

Solution 2

var source = 'flutter app';
final decrypted = encrypter.decrypt64(source, iv: iv);

Comments

[Parth Bhanderi]

Okay I'm passing Encrypted data and i got this Exception has occurred. FormatException (FormatException: Invalid character (at character 29) 73R634pZF8gPztaH7Qn7eu1U41BA== ^ )

[Tokenyet]

Sorry, this is an another question, and I have never used that plugin. This seems to be you passed the wrong Encrypted data, but I can't talk more about this.

[Parth Bhanderi]

Okay Thanks Sir,

[Tokenyet]

You could mark as sloved, so let readers know this issue is sloved :)