Dart

2-Key Triple DES (112 bits)

See more Encryption Examples

Demonstrates 2-Key Triple DES encryption (112-bit 3DES encryption). Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final crypt = CkCrypt2();

  // Specify 3DES for the encryption algorithm:
  crypt.cryptAlgorithm = '3des';

  crypt.cipherMode = 'ecb';

  // For 2-Key Triple-DES, use a key length of 128
  // (Given that each byte's msb is a parity bit, the strength is really 112 bits).
  crypt.keyLength = 128;

  // Pad with zeros
  crypt.paddingScheme = 3;

  // EncodingMode specifies the encoding of the output for
  // encryption, and the input for decryption.
  // It may be "hex", "url", "base64", or "quoted-printable".
  crypt.encodingMode = 'hex';

  // Let's create a secret key by using the MD5 hash of a password.
  // The Digest-MD5 algorithm produces a 16-byte hash (i.e. 128 bits)
  crypt.hashAlgorithm = 'md5';
  final keyHex = crypt.hashStringENC('secretPassword');

  // Set the encryption key:
  crypt.setEncodedKey(keyHex, 'hex');

  // Encrypt
  final encStr = crypt.encryptStringENC('The quick brown fox jumped over the lazy dog');
  print(encStr);

  // Now decrypt:
  final decStr = crypt.decryptStringENC(encStr);
  print(decStr);
}