Dart

Simple AES ECB Decryption

See more Encryption Examples

Decrypt 256-bit encrypted content. Dart

import 'package:chilkat/chilkat.dart';

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

  final crypt = CkCrypt2();

  // Encrypted content (base64-encoded)
  final ct = 'd/95VziAnUNKkpXr3dJBFcQqAEDWlDkc7EU2jLkYPxmr6PpLRJlgHos+/Uy28CvJsmztQ3JkJAMukVoj46QJ/7RMuqLb31cSKd1ZvMzx9J9b6q0EkmPJcSfBhf2x7v5Qvq3lz1EIH7RM61cDGf+g9p4lt6FtU2MzCqtYD+Vr29voCn5WU1CnXmks64RrbyDA1DDHOx2deJ4Kn68+KoPM9tAw9kbf4HApL1nJYU3Mfzl+MnuHuB2kJpL5GqbuNvS+4QjxuwtNGuZEEY0gOS4RIvWl/XfkxtWHMkzsKy08AO792xDGer4rL4Q1NcfI/H2V';

  // 256-bit AES key (literally the 32 us-ascii bytes of this string)
  final key = 'sQsPQYesBM5qEM5OSxicFatIiLM459Bu';

  // Note: If your AES key is a string, and it's not clearly hex or base64, AND if the length of the string is the exact size of the AES key,
  // then *literally* use the ascii chars as the AES key.

  crypt.cryptAlgorithm = 'aes';
  crypt.cipherMode = 'ecb';
  crypt.keyLength = 256;
  // use the exact ascii bytes as the key.
  crypt.setEncodedKey(key, 'ascii');
  crypt.encodingMode = 'base64';

  final pt = crypt.decryptStringENC(ct);

  print(pt);
}