Google Play 应用内结算购买签名的服务器端验证失败

Question

我目前正在将 Google Play 应用内付费集成到我的 androidgame 项目中，我有一个 Node.js 服务器设置并计划将其发送给 "originalJson" 和 "signature" 用于服务器端验证的 Google 播放购买响应的值。

然后我在我的 Node.js 服务器上进行了一些测试，首先是我购买的其中一件商品的 "originalJson" 和 "signature" 价值（从客户端获取） :

   originalJson:{"orderId":"GPA.1312-8694-0319-25069","packageName":"com.shihu.sm.testin","productId":"com.shihu.sm.testin.diamond","purchaseTime":1452598011176,"purchaseState":0,"developerPayload":"{\"iabProductId\":\"com.shihu.sm.testin.diamond\",\"gOrderId\":\"2cb77de1a2a94db18b6df84f8037ea5b\",\"serverId\":\"6\",\"productId\":\"202\"}","purchaseToken":"bjoncdcebeclpklebmadidgb.AO-J1OyEbKLL0rhWQAc1hjdWyJPXHkAoHZTfZasqUuFWKWyAlnj-opiDLYILNRpnWgcblO8vV37fWf0kpeNMRZcgRT-fRxAO4P8VQPmU-TJakB-sCiRx8sUxL4nxnUBMnZdFWdpaIZDW5tP3Ck4aO57n1o66PwnjZw"}
   signature:JdfwMxprv7iMbI5YnVIWXLEAqiDhAQQva2IdfxtmhqBvLNU4Msi8sj31mnrVJfShxNmQI3zhlNUrCCaXdraFM0/y8O4PoZWYr+PFjCmlMovhG+ldeImEu7x52GLoQ7DsO8Yh4aLYmxemezFc1RjcSpq+l6Zzu9T6j3fHjLfQ060SEFapZITI/poxlFyvJX3bHhF9wGP54tL6pGjB/7fBEqTM1zHXUYeZyz+4akqV8oODlIWwMKhvN5tX/Zra9kh9hm0bnJT/1YWso3tLlT/WTK9nsP1l/lTnEXvgzq9QVSGbT/cpD7KSbR5N4i/NmPYAlCOvesW9OlRD05L8yytpBw==

然后我写了下面的代码用"RSA-SHA1"算法和"base64"签名编码做验证：

    var crypto = require('crypto');

    console.log('start verification');

    var public_key = "-----BEGIN PUBLIC KEY-----" + "\r\n" + 
    "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAg+VmzvTvb856ur/J+PWC" + "\r\n" +
    "gFRhLYV/chAuWzUuqlIh5gnYz1RFOYymCWAKP3wguol8YSe/72zEqAvPutBU2XVj" + "\r\n" + 
    "zx3sHT+GUInbKjgZHzxw0viPh//OfaooEvEFMz9C6J8ABwpGNQUpACmyw12ZKshP" + "\r\n" +
    "HCJ6PZV+nsWry6PEZgnYCF7w5SDP4GY2tr3Q5D0iQwoALA40KYQfsKZ6pI5L8bDT" + "\r\n" +
    "2MLTFoemg/npeARy9HYkbonPatBhWjp2flzBRcyQx7DyQ7csLvPl5AGHRT4h5RBq" + "\r\n" + 
    "RlLj+DBgNDAdwvHGyfhbTz7fPsT6xn7qifxAN+2gQsemSVmhi15zECF/k5MtTiOF" + "\r\n" +
    "owIDAQAB" + "\r\n" + 
    "-----END PUBLIC KEY-----";

    verifier= crypto.createVerify("RSA-SHA1");
    originalJson = '{"orderId":"GPA.1312-8694-0319-25069","packageName":"com.shihu.sm.testin","productId":"com.shihu.sm.testin.diamond","purchaseTime":1452598011176,"purchaseState":0,"developerPayload":"{\"iabProductId\":\"com.shihu.sm.testin.diamond\",\"gOrderId\":\"2cb77de1a2a94db18b6df84f8037ea5b\",\"serverId\":\"6\",\"productId\":\"202\"}","purchaseToken":"bjoncdcebeclpklebmadidgb.AO-J1OyEbKLL0rhWQAc1hjdWyJPXHkAoHZTfZasqUuFWKWyAlnj-opiDLYILNRpnWgcblO8vV37fWf0kpeNMRZcgRT-fRxAO4P8VQPmU-TJakB-sCiRx8sUxL4nxnUBMnZdFWdpaIZDW5tP3Ck4aO57n1o66PwnjZw"}';
    signature = 'JdfwMxprv7iMbI5YnVIWXLEAqiDhAQQva2IdfxtmhqBvLNU4Msi8sj31mnrVJfShxNmQI3zhlNUrCCaXdraFM0/y8O4PoZWYr+PFjCmlMovhG+ldeImEu7x52GLoQ7DsO8Yh4aLYmxemezFc1RjcSpq+l6Zzu9T6j3fHjLfQ060SEFapZITI/poxlFyvJX3bHhF9wGP54tL6pGjB/7fBEqTM1zHXUYeZyz+4akqV8oODlIWwMKhvN5tX/Zra9kh9hm0bnJT/1YWso3tLlT/WTK9nsP1l/lTnEXvgzq9QVSGbT/cpD7KSbR5N4i/NmPYAlCOvesW9OlRD05L8yytpBw=='

    verifier.update(originalJson);
    if(verifier.verify(public_key, signature, "base64"))
        console.log('verification succeeded');
    else
        console.log("verification failed");

中间的密钥字符串是来自 Google 控制台的 base64 编码 public 密钥，每 64 个字符被“\r\n”分割。一开始我没有把它分成 64 个字符的块，并且一直失败，错误说无法生成 pub 密钥对象，后来我按照互联网上的一些例子并通过了，但直到现在，我还没有'得到一个成功的验证结果。

我参考了更多的例子，我认为验证的'RSA-SHA1'和'base64'设置是正确的，所以我还缺少或做错了什么？

谢谢

Answer 1

您的 originalJson 字符串似乎缺少一些必要的转义。

我已经成功地验证了签名并添加了转义：

var originalJson = '{"orderId":"GPA.1312-8694-0319-25069","packageName":"com.shihu.sm.testin","productId":"com.shihu.sm.testin.diamond","purchaseTime":1452598011176,"purchaseState":0,"developerPayload":"{\"iabProductId\":\"com.shihu.sm.testin.diamond\",\"gOrderId\":\"2cb77de1a2a94db18b6df84f8037ea5b\",\"serverId\":\"6\",\"productId\":\"202\"}","purchaseToken":"bjoncdcebeclpklebmadidgb.AO-J1OyEbKLL0rhWQAc1hjdWyJPXHkAoHZTfZasqUuFWKWyAlnj-opiDLYILNRpnWgcblO8vV37fWf0kpeNMRZcgRT-fRxAO4P8VQPmU-TJakB-sCiRx8sUxL4nxnUBMnZdFWdpaIZDW5tP3Ck4aO57n1o66PwnjZw"}';

注意 \ 的。否则字符串不同。

Google Play 应用内结算购买签名的服务器端验证失败

Server side verification of Google Play in-app billing purchase signature failed

rsa

node.js

in-app-billing

server-side-validation

google-play