使用PHP与gree/jose库验证web钩子签名

Question

我正试图跟随标题 --第三方将被称为3P向前推进)。

3P提供使用java库的示例Kotlin实现。我正在使用PHP，并决定尝试格里/何塞作为我的库。

作为一个健全检查，我已经将它们的样本数据复制到我的实现中，但是我仍然得到了一个错误的结果。

$signature = '1IJl6VyKU4pYfqMHUd55QBNq5Etbz5a7DOCkID2Nloay76y4f02w2iMXONlyL/Bx9SkrbivOHW1l1XadkUrd5pKUK1fhpcnItukLrsK5ADQOcuEjSLBg9qJffZYooXfc7hOD/fV0sN33W2vBYJspbR3P766DwG/6IO/20f9t/DcSWa79EFZPMnsCicEArNS3iIYBtdZSX5ta5EETt7S8acHbpIlSDrTcYpo0vuz19LQ6SPQqN2LGdR+U7ZOiUQWdfMXhUgE7w94pHQzcOq1IHfw3CylUEcRR/DhrGqs4mBaagO6JpWzeqE1uTAiN579kOtSSqjblTb2AXALTQ3+TtA==';  // taken from "Signature" in headers
$payload = '{"eventId":"569886904","officeId":"132917981","eventType":"INTEGRATION_DEACTIVATED","event":{"integration":{"status":"INACTIVE","webhookId":"2bc47eed-08a0-4d18-a5c0-b7f18ab802e3","officeId":"132917981","createdDateTime":"2020-03-17T23:39:41.804Z","lastUpdatedDateTime":"2020-03-17T23:39:41.804Z"}},"createdDateTime":"2020-03-17T23:39:41.806Z"}';  // this is the body of the request sent to my application
$components = [
    'kty' => 'RSA',
    'e' => 'AQAB',
    'n' => 'ANV-aocctqt5xDRnqomCgsO9dm4hM0Qd75TqG7z2G5Z89JQ7SRy2ok-fIJRiSU5-JfjPc3uph3gSOXyqlNoEh4YGL2R4AP7jhxy9xv0gDVtj1tExB_mmk8EUbmj8hTIrfAgEJrDeB4qMk7MkkKxhHkhLNEJEPZfgYHcHcuKjp2l_vtpiuR9Ouz0febB9K4gLozrp9KHW2K-m0z02-tSurxmmij5nnJ-CEgp0wXcCS4w4G0jve4hcLlL9FU8HKxrb0d4rMQgM3VAal6yG5pwMdtrsch7xA-occwWFC_tHgpDJGNvOJNFtuk7Cit_aom-6U6ssGF13sUtdrog2ePWjVxc=',
    'kid' => '2020-03-18',
    'alg' => 'RSA256',
];  // the $components array values are sourced by a separate API call to the 3P
$rsa = JOSE_JWK::decode($components); // => phpseclib\Crypt\RSA instance
$publicKey = $rsa->createKey()['publickey'];  // this appears to work perfectly
$rsa->loadKey($publicKey);
var_dump($rsa->verify($payload, $rsa->sign($signature)));  // bool(false)

我已经用这个软件挣扎了两天，我觉得我已经尝试了100种不同的东西(一些证明)。我甚至尝试过部分放弃gree/jose图书馆。最终，我只需要一个可行的解决方案(不管它是修复这个实现还是娱乐一个不同的实现/库)。

我觉得在调用verify()之前，我可能遗漏了一步(或两步)来准备字符串，但我对这个过程太不熟悉，无法亲自识别。当然，verify()并没有指出我是变热了还是变冷了。

我去过的地方：

• 如何将C# RSA转换为php？
• 从c#代码签名时php中的RSA签名验证
• verify-function-examples.html
• https://www.php.net/manual/en/function.openssl-verify.php
• (密码系统)
• 签名JSON对象
• https://tools.ietf.org/id/draft-ietf-jose-json-web-signature-09.html
• https://hotexamples.com/examples/phpseclib.crypt/RSA/verify/php-rsa-verify-method-examples.html
• https://github.com/nov/jose-php

Answer 1

RS256在Java中的意思是5使用SHA-256

$signature = '1IJl6VyKU4pYfqMHUd55QBNq5Etbz5a7DOCkID2Nloay76y4f02w2iMXONlyL/Bx9SkrbivOHW1l1XadkUrd5pKUK1fhpcnItukLrsK5ADQOcuEjSLBg9qJffZYooXfc7hOD/fV0sN33W2vBYJspbR3P766DwG/6IO/20f9t/DcSWa79EFZPMnsCicEArNS3iIYBtdZSX5ta5EETt7S8acHbpIlSDrTcYpo0vuz19LQ6SPQqN2LGdR+U7ZOiUQWdfMXhUgE7w94pHQzcOq1IHfw3CylUEcRR/DhrGqs4mBaagO6JpWzeqE1uTAiN579kOtSSqjblTb2AXALTQ3+TtA==';  // taken from "Signature" in headers
$payload = '{"eventId":"569886904","officeId":"132917981","eventType":"INTEGRATION_DEACTIVATED","event":{"integration":{"status":"INACTIVE","webhookId":"2bc47eed-08a0-4d18-a5c0-b7f18ab802e3","officeId":"132917981","createdDateTime":"2020-03-17T23:39:41.804Z","lastUpdatedDateTime":"2020-03-17T23:39:41.804Z"}},"createdDateTime":"2020-03-17T23:39:41.806Z"}';  // this is the body of the request sent to my application
$components = [
    'kty' => 'RSA',
    'e' => 'AQAB',
    'n' => 'ANV-aocctqt5xDRnqomCgsO9dm4hM0Qd75TqG7z2G5Z89JQ7SRy2ok-fIJRiSU5-JfjPc3uph3gSOXyqlNoEh4YGL2R4AP7jhxy9xv0gDVtj1tExB_mmk8EUbmj8hTIrfAgEJrDeB4qMk7MkkKxhHkhLNEJEPZfgYHcHcuKjp2l_vtpiuR9Ouz0febB9K4gLozrp9KHW2K-m0z02-tSurxmmij5nnJ-CEgp0wXcCS4w4G0jve4hcLlL9FU8HKxrb0d4rMQgM3VAal6yG5pwMdtrsch7xA-occwWFC_tHgpDJGNvOJNFtuk7Cit_aom-6U6ssGF13sUtdrog2ePWjVxc=',
    'kid' => '2020-03-18',
    'alg' => 'RSA256',
];  // the $components array values are sourced by a separate API call to the 3P
$rsa = JOSE_JWK::decode($components); // => phpseclib\Crypt\RSA instance
$rsa->setHash('sha256');
var_dump($rsa->_rsassa_pkcs1_v1_5_verify($payload, JOSE_URLSafeBase64::decode($signature)));