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php - 使用 PHP 对远程证书进行 Windows 应用商店 IAP 签名验证

转载 作者:可可西里 更新时间:2023-11-01 13:10:58 33 4
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我正在尝试使用 PHP 验证 Windows 应用商店应用程序的 IAP 收据。基本上,尝试将此示例代码转换为 PHP http://msdn.microsoft.com/en-us/library/windows/apps/jj649137.aspx .收据看起来像这样

<Receipt Version="1.0" ReceiptDate="2012-08-30T23:08:52Z" CertificateId="b809e47cd0110a4db043b3f73e83acd917fe1336" ReceiptDeviceId="4e362949-acc3-fe3a-e71b-89893eb4f528">
<ProductReceipt Id="6bbf4366-6fb2-8be8-7947-92fd5f683530" ProductId="Product1" PurchaseDate="2012-08-30T23:08:52Z" ExpirationDate="2012-09-02T23:08:49Z" ProductType="Durable" AppId="55428GreenlakeApps.CurrentAppSimulatorEventTest_z7q3q7z11crfr" />
<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#" />
<SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />
<Reference URI="">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
<DigestValue>Uvi8jkTYd3HtpMmAMpOm94fLeqmcQ2KCrV1XmSuY1xI=</DigestValue>
</Reference>
</SignedInfo>
<SignatureValue>TT5fDET1X9nBk9/yKEJAjVASKjall3gw8u9N5Uizx4/Le9RtJtv+E9XSMjrOXK/TDicidIPLBjTbcZylYZdGPkMvAIc3/1mdLMZYJc+EXG9IsE9L74LmJ0OqGH5WjGK/UexAXxVBWDtBbDI2JLOaBevYsyy+4hLOcTXDSUA4tXwPa2Bi+BRoUTdYE2mFW7ytOJNEs3jTiHrCK6JRvTyU9lGkNDMNx9loIr+mRks+BSf70KxPtE9XCpCvXyWa/Q1JaIyZI7llCH45Dn4SKFn6L/JBw8G8xSTrZ3sBYBKOnUDbSCfc8ucQX97EyivSPURvTyImmjpsXDm2LBaEgAMADg==</SignatureValue>
</Signature>
</Receipt>

我已经为这样的服务器检索了一个证书

function getCertificate($certID)
{
$url = 'https://lic.apps.microsoft.com/licensing/certificateserver/?cid=' . $certID;
$path = '/mypath/certs/' . $certID;

if(!file_exists($path)) {
$fp = fopen($path, 'w');

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_FILE, $fp);

$data = curl_exec($ch);

curl_close($ch);
fclose($fp);
}
$cert = file_get_contents($path);
//var_dump(openssl_x509_parse($cert));

return openssl_x509_read($cert);
}

并且我假设 SignatureValue 是我的签名。据我所知,我需要的功能是 openssl_verify 但我不确定应该使用哪些参数,因为验证总是失败。

$data     = $receiptXML->Signature->SignatureValue;
$pubkeyid = openssl_get_publickey($cert);
// state whether signature is okay or not
$ok = openssl_verify($receipt, $data, $pubkeyid, OPENSSL_ALGO_SHA256);
if($ok == 1) {
echo "good";
} elseif($ok == 0) {
echo "bad";
} else {
echo "ugly, error checking signature";
}
// free the key from memory
openssl_free_key($pubkeyid);

有谁知道我这里哪里出错了?

最佳答案

我花了几天时间来验证收据并最终让它开始工作......

<?php
/**
* Date: 01.11.2013
* Time: 23:09
* @author: Philipp Serrer
*/

namespace Ephisa\Service\WindowsStore;

require_once subpath . 'vendor/xmlseclibs/xmlseclibs.php';

use Ephisa\Cache;

class Receipt {

private $doc;
private $objXMLSecDSig;
private $objDSig;

function __construct($xml, $isFile = false)
{
if ($isFile) {
$xml = file_get_contents($xml);
}

// strip unwanted chars - IMPORTANT!!!
$xml = str_replace(array("\n","\t", "\r"), "", $xml);
//some (probably mostly WP8) receipts have unnecessary spaces instead of tabs
$xml = preg_replace('/\s+/', " ", $xml);
$xml = str_replace("> <", "><", $xml);

$doc = new \DOMDocument();
$doc->loadXML($xml);

$objXMLSecDSig = new \XMLSecurityDSig();
$objDSig = $objXMLSecDSig->locateSignature($doc);

if (!$objDSig) {
throw new InvalidSignatureException();
}

//canonicalize
$objXMLSecDSig->canonicalizeSignedInfo();

$this->objDSig = $objDSig;
$this->objXMLSecDSig = $objXMLSecDSig;
$this->doc = $doc;
}

/**
* Returns the key for verification.
*
* @return null|\XMLSecurityKey
*/
function getKey()
{
$objKey = $this->objXMLSecDSig->locateKey();
$keyInfo = \XMLSecEnc::staticLocateKeyInfo($objKey, $this->objDSig);

if (!$keyInfo->key) {
$xpath = new \DOMXPath($this->doc);
$query = 'string(/Receipt/@CertificateId)';
$id = $xpath->evaluate($query);

Cache::instance()->setLifetime(60*60*24*7, 'win-store-cert');
$cert = Cache::instance()->get($id, 'win-store-cert', function() use ($id) {
return file_get_contents('https://lic.apps.microsoft.com/licensing/certificateserver/?cid=' . $id);
});

$objKey->loadKey($cert, false);
}

return $objKey;
}

/**
* Verifies the given receipt
*
* @return bool Returns TRUE on success
*/
function verify()
{
try {
if (!$this->objXMLSecDSig->validateReference()) {
return false;
}

return (bool)$this->objXMLSecDSig->verify($this->getKey());
}
catch (\Exception $e)
{
// failure...
}

return false;
}
}

此代码是我的框架的一部分,因此包含一些框架相关代码(缓存),但我认为,您已经了解了主要思想及其工作原理。当然,您必须包括在 https://github.com/robrichards/xmlseclibs 上可用的 php xmlseclibs。

关于php - 使用 PHP 对远程证书进行 Windows 应用商店 IAP 签名验证,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13776551/

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