(PHP ActiveX) Twofish Encryption - 128-bit, 192-bit, 256-bit

Twofish encryption. The Chilkat encryption component supports 128-bit, 192-bit, and 256-bit Twofish encryption in both ECB (Electronic Cookbook) and CBC (Cipher-Block Chaining) modes.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Crypt2')
$crypt = new COM("Chilkat.Crypt2");

// Set the encryption algorithm = "twofish"	
$crypt->CryptAlgorithm = 'twofish';

// CipherMode may be "ecb" or "cbc"
$crypt->CipherMode = 'cbc';

// KeyLength may be 128, 192, 256
$crypt->KeyLength = 256;

// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size.  Twofish has a block
// size of 16 bytes, so encrypted output is always
// a multiple of 16.
$crypt->PaddingScheme = 0;

// 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';

// An initialization vector is required if using CBC mode.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
$ivHex = '000102030405060708090A0B0C0D0E0F';
$crypt->SetEncodedIV($ivHex,'hex');

// The secret key must equal the size of the key.  For
// 256-bit encryption, the binary secret key is 32 bytes.
// For 128-bit encryption, the binary secret key is 16 bytes.
$keyHex = '000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F';
$crypt->SetEncodedKey($keyHex,'hex');

// Encrypt a string...
// The input string is 44 ANSI characters (i.e. 44 bytes), so
// the output should be 48 bytes (a multiple of 16).
// Because the output is a hex string, it should
// be 96 characters long (2 chars per byte).
$encStr = $crypt->encryptStringENC('The quick brown fox jumps over the lazy dog.');
print $encStr . "\n";

// Now decrypt:
$decStr = $crypt->decryptStringENC($encStr);
print $decStr . "\n";

?>