ruby - 使用 Ruby 验证来自 Windows 应用商店的 IAP 收据

Question

我正在尝试使用 Ruby 验证来自 Windows 应用商店的收据。我正在使用 xmldsig gem 如下:

certificate = OpenSSL::X509::Certificate.new(cert)
signed_document = Xmldsig::SignedDocument.new(xml)
signed_document.validate(certificate)

但它无法使用获取的数据 from MS example (在 C# 中工作)。有人幸运地使用 xmldsig 来验证 Windows 应用商店收据吗？

仅供引用，这些是 cert 和 xml vars 的初始化:

xml = <<-XML
<?xml version="1.0"?>
<Receipt Version="1.0" CertificateId="A656B9B1B3AA509EEA30222E6D5E7DBDA9822DCD" xmlns="http://schemas.microsoft.com/windows/2012/store/receipt">
  <ProductReceipt PurchasePrice="$20.89" PurchaseDate="2012-11-30T21:32:07.096Z" Id="2f9c5c8f-3e1d-4fc7-a871-ac58f7e78053" AppId="3ec6cd9a-ca82-4d38-bfdf-ecafdb35a738" ProductId="Test" ProductType="Consumable" PublisherDeviceId="Test" MicrosoftProductId="59ef70aa-7099-4679-889e-f21919bfd2c6" />
  <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
    <SignedInfo>
      <CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
      <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>FyFb1HGm+yeOIjt18M6TPD4Qzeu469vwDbQs7w72mdA=</DigestValue>
      </Reference>
    </SignedInfo>
    <SignatureValue>noct5CYBtRwBxVxkUeZIzeDyruLGVBqBMuFuBytpouPLACnQ5dbzdRvWX4XN67IUo0J2FW8DoYcMbf3sAS+PeKKV8SLnU+l8K1hWEbbbugHZezStTzwwkYcZuCTnAk7BYO0aiZWuXm9GiZGT9iyXsYtU1/u87L+llnVibU/m7gV8tD3vG0tVkjzV20C8666mHUsY/jxeq3ed7YY9CT0SDrh5PeL4ESaopBLcncHo/e6lcjyoKbO3e6YuIpsi8DVueeKNhpTlwa5yc0O3qzc5SGnT4Kbhj9NBEXf15/oTaLlg7lJhnQZ0mY+yR8vc4D0SkqD6e5Uc4u64hnu+g3Hphg==</SignatureValue>
  </Signature>
</Receipt>
XML

cert = <<-CERT
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
CERT

Answer 1

我可以看到摘要值和签名不正确。

这通常是因为不正确的空格或规范化方法。

示例代码仅验证签名。我相信这包括验证摘要值。这是 2 个独立的步骤。

我没有 C# 环境，所以我无法验证验证的实际输入。

我对这个声明的输入感兴趣:

signer.LoadXml((XmlElement)nodeList[0]);