React Native

Blowfish Encryption to Match PHP's Mcrypt Extension

See more Encryption Examples

Demonstrates how to match Blowfish encryption results with PHP's mcrypt extension.

Please refer to this PHP (non-Chilkat) example for PHP Blowfish Encryption. The code here matches the PHP mcrypt results on that web page.

React Native

import { Crypt2 } from '@chilkat/react-native'

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

  const crypt = new Crypt2();

  // Use "blowfish2" to get proper results:
  crypt.cryptAlgorithm = 'blowfish2';

  // CipherMode may be "ecb" or "cbc"
  crypt.cipherMode = 'cbc';

  // KeyLength (in bits) may be a number between 32 and 448.
  // 128-bits is usually sufficient.  The KeyLength must be a 
  // multiple of 8.
  crypt.keyLength = 256;

  // Pad with NULL bytes (PHP pads with NULL bytes)
  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';

  // The blowfish algorithm uses a 64-bit block size, 
  // therefore the IV must be 8 bytes:
  const ivAscii = '12345678';
  crypt.setEncodedIV(ivAscii, 'ascii');

  // For 256-bit encryption, the key is 32 bytes:
  let keyAscii = '1234567890123456ABCDEFGHIJKLMNOP';
  crypt.setEncodedKey(keyAscii, 'ascii');

  const plainText = 'The quick brown fox jumped over the lazy dog';

  let cipherText = crypt.encryptStringENC(plainText);
  console.log(cipherText);
  // Output should be (case insensitive):
  // 276855ca6c0d60f7d9708210440c1072e05d078e733b34b4198d609dc2fcc2f0c30926cdef3b6d52baf6e345aa03f83e

  // Do 128-bit Blowfish encryption:
  crypt.keyLength = 128;
  keyAscii = '1234567890123456';
  crypt.setEncodedKey(keyAscii, 'ascii');

  cipherText = crypt.encryptStringENC(plainText);
  console.log(cipherText);
  // Output should be (case insensitive):
  // d2b5abb73208aea3790621d028afcc74d8dd65fb9ea8e666444a72523f5ecca60df79a424e2c714fa6efbafcc40bdca0
}