ITfoxtec SAML 2.0：配置 AWS SSO 时出现 InvalidSignatureException

我有一个小型测试应用程序，已成功与 Okta 作为 IdP 集成。我还设置了 AWS SSO 来充当 IdP。当我将应用程序切换为使用 AWS SSO 时，出现以下错误：

ITfoxtec.Identity.Saml2.Cryptography.InvalidSignatureException: Signature is invalid.
   at ITfoxtec.Identity.Saml2.Saml2Request.ValidateXmlSignature(SignatureValidation documentValidationResult)
   at ITfoxtec.Identity.Saml2.Saml2Request.Read(String xml, Boolean validateXmlSignature)
   at ITfoxtec.Identity.Saml2.Saml2Response.Read(String xml, Boolean validateXmlSignature)
   at ITfoxtec.Identity.Saml2.Saml2AuthnResponse.Read(String xml, Boolean validateXmlSignature)
   at ITfoxtec.Identity.Saml2.Saml2PostBinding.Read(HttpRequest request, Saml2Request saml2RequestResponse, String messageName, Boolean validateXmlSignature)
   at ITfoxtec.Identity.Saml2.Saml2PostBinding.UnbindInternal(HttpRequest request, Saml2Request saml2RequestResponse, String messageName)
   at ITfoxtec.Identity.Saml2.Saml2Binding`1.Unbind(HttpRequest request, Saml2Response saml2Response)
   at SAML_Example.Controllers.AuthController.AssertionConsumerService() in C:\Workspace\saml\SAML_Example\AuthController.cs:line 46
   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextResourceFilter>g__Awaited|24_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeFilterPipelineAsync()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

我已验证从 AWS SSO 返回的签名算法与 Okta 返回的一致，http://www.w3.org/2001/04/xmldsig-more#rsa-sha256 http://www.w3.org/2001/04/xmldsig-more#rsa-sha256。有人使用 AWS SSO 成功配置了 ITfoxtec 吗？

与 Okta 和 AWS 的集成是基于元数据还是通过配置 IdP 证书来配置对外部 IdP 的信任？

听起来您正在根据不正确的证书验证 AWS IdP。