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<?php
require_once "Crypt/RSA.php";
class Services_Signing_Php extends Services_Signing_Base {
/*
* Overwrite private constructor
*/
public function __construct() {
} # ctor
/*
* Actually checks the RSA signature
*/
protected function checkRsaSignature($toCheck, $signature, $rsaKey, $useCache) {
# First decode the signature
$signature = base64_decode($signature);
# Initialize the public key to verify with
$pubKey['n'] = new Math_BigInteger(base64_decode($rsaKey['modulo']), 256);
$pubKey['e'] = new Math_BigInteger(base64_decode($rsaKey['exponent']), 256);
# and verify the signature
$rsa = new Crypt_RSA();
$rsa->loadKey($pubKey, CRYPT_RSA_PUBLIC_FORMAT_RAW);
$rsa->setSignatureMode(CRYPT_RSA_SIGNATURE_PKCS1);
# Supress notice if the signature was invalid
$saveErrorReporting = error_reporting(E_ERROR);
$tmpSave = $rsa->verify($toCheck, $signature);
error_reporting($saveErrorReporting);
return $tmpSave;
} # checkRsaSignature
/*
* Creates a private and public keypair
*/
public function createPrivateKey($sslCnfPath) {
$rsa = new Crypt_RSA();
$rsa->setSignatureMode(CRYPT_RSA_SIGNATURE_PKCS1);
$keyPair = $rsa->createKey();
return array('public' => $keyPair['publickey'],
'private' => $keyPair['privatekey']);
} # createPrivateKey
} # Services_Signing_Php
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