HMAC MD5 to Match RFC 2022 Test Vectors

Demonstrates using Chilkat in PHP to computer HMAC MD5 message authentication codes to match the test vectors given by RFC 2202.

Download Chilkat Crypt ActiveX

<?php

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

//  Any string argument automatically begins the 30-day trial.
$success = $crypt->UnlockComponent('30-day trial');
if ($success != true) {
    print $crypt->lastErrorText() . "\n";
    exit;
}

//  The output will be Hex, so set the EncodingMode:
$crypt->EncodingMode = 'hex';

//  Set the hash algorithm:
//  Choices are: md5, sha-1, sha256, sha384, sha512, md2, haval
$crypt->HashAlgorithm = 'md5';

//  Set the HMAC key:
$crypt->SetHmacKeyEncoded('0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b','hex');
$mac = $crypt->hmacStringENC('Hi There');
print $mac . "\n";

$crypt->SetHmacKeyEncoded('Jefe','ansi');
$mac = $crypt->hmacStringENC('what do ya want for nothing?');
print $mac . "\n";
?>