3DES Test Vector

Example for 3-key 3DES encryption (192-bit) to match a test vector produced by both (non-Chilkat) PHP code and C# code using the .NET Framework.

PHP code to produce identical output: PHP 3DES Test Vector

C# code to produce identical output: C# 3DES Test Vector

Download Chilkat Crypt ActiveX

<?php

$crypt = new COM("Chilkat.Crypt2");

$success = $crypt->UnlockComponent('Anything for 30-day trial.');
if ($success != true) {
    print 'Crypt component unlock failed' . "\n";
    exit;
}

//  Specify 3DES for the encryption algorithm:
$crypt->CryptAlgorithm = '3des';

$crypt->CipherMode = 'ecb';

//  KeyLength must be 192.  3DES is technically 168-bits;
//  the most-significant bit of each key byte is a parity bit,
//  so we must indicate a KeyLength of 192, which includes
//  the parity bits.
$crypt->KeyLength = 192;

//  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';

//  The secret key must equal the size of the key.  For
//  3DES, the key must be 24 bytes (i.e. 192-bits).
$keyAscii = '1234567890123456ABCDEFGH';
$crypt->SetEncodedKey($keyAscii,'ascii');

//  Encrypt.
//  The result should be:
//  13d4d3549493d2870f93c3e0812a06de467e1f9c0bfb16c070ede5cabbd3ca62f217a7ae8d47f2c7bf62eb309323b58b
$encStr = $crypt->encryptStringENC('The quick brown fox jumped over the lazy dog');
print $encStr . "\n";

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

?>