InvalidSignatureException：签名无效

Question

我正在尝试使用 ITFoxtec-saml 和 Auth0 作为 IdP。但在 ACS 上，我收到以下错误：

ITfoxtec.Identity.Saml2.Cryptography.InvalidSignatureException: Signature is invalid.
   at ITfoxtec.Identity.Saml2.Saml2Request.ValidateXmlSignature(SignatureValidation documentValidationResult) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Request\Saml2Request.cs:line 237
   at ITfoxtec.Identity.Saml2.Saml2Request.Read(String xml, Boolean validateXmlSignature) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Request\Saml2Request.cs:line 204
   at ITfoxtec.Identity.Saml2.Saml2Response.Read(String xml, Boolean validateXmlSignature) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Request\Saml2Response.cs:line 66
   at ITfoxtec.Identity.Saml2.Saml2AuthnResponse.Read(String xml, Boolean validateXmlSignature) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Request\Saml2AuthnResponse.cs:line 214
   at ITfoxtec.Identity.Saml2.Saml2PostBinding.Read(HttpRequest request, Saml2Request saml2RequestResponse, String messageName, Boolean validateXmlSignature) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Bindings\Saml2PostBinding.cs:line 106
   at ITfoxtec.Identity.Saml2.Saml2PostBinding.UnbindInternal(HttpRequest request, Saml2Request saml2RequestResponse, String messageName) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Bindings\Saml2PostBinding.cs:line 96
   at ITfoxtec.Identity.Saml2.Saml2Binding`1.Unbind(HttpRequest request, Saml2Response saml2Response) in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\src\ITfoxtec.Identity.Saml2\Bindings\Saml2Binding.cs:line 70
   at TestWebAppCore.Controllers.AuthController.AssertionConsumerService() in C:\Documents\Repos\ITfoxtec.Identity.Saml2-master\ITfoxtec.Identity.Saml2-master\test\TestWebAppCore\Controllers\AuthController.cs:line 58

Answer 1

如果签名有效，IToxtec Identity SAML 2.0 组件应接受该签名。我不知道验证 Auth0 令牌时出现问题。

调试时可以检查签名算法和证书是否正确。也许还可以尝试将证书验证模式设置为无，将吊销模式设置为不检查。

配置示例：

  "Saml2": {
    ...
    "SignatureAlgorithm": "http://www.w3.org/2001/04/xmldsig-more#rsa-sha256",
    "CertificateValidationMode": "None",
    "RevocationMode": "NoCheck"
    ...
  }