The X.509 certificate could not be loaded from the file

SAML for ASP.NET
1

Error :
An exception of type ‘ComponentSpace.SAML2.Exceptions.SAMLException’ occurred in ComponentSpace.SAML2.dll but was not handled in user code

Additional information: The X.509 certificate could not be loaded from the file "

This is exception i am getting

SAMLConfiguration.Configurations[client].CertificateManager = new CertificateManager(SAMLConfiguration.Configurations[client]);

this object has the configuration for the Service provider and identity provider
SAMLConfiguration.Configurations[client].

This was working alright previously but recently the certificate has expired, so when i am trying to add new authority issued certificate the application gives the above exception.

I have followed other articles in the forum but did not help
https://www.componentspace.com/Forums/1578/SHA256-and-Converting-the-Cryptographic-Service-Provider-Type

2

Please take a look at the following forum topic.
https://www.componentspace.com/Forums/29/Troubleshooting-Loading-X.509-Certificates
If there’s still an issue, please enable SAML trace and send the generated log file as an email attachment to support@componentspace.com.
https://www.componentspace.com/Forums/17/Enabing-SAML-Trace

3
[quote]
ComponentSpace - 5/7/2018
Please take a look at the following forum topic.
https://www.componentspace.com/Forums/29/Troubleshooting-Loading-X.509-Certificates
If there's still an issue, please enable SAML trace and send the generated log file as an email attachment to support@componentspace.com.
https://www.componentspace.com/Forums/17/Enabing-SAML-Trace
[/quote]

I am not sure where to use this above code, from the link you provided it seems like we are using a high-level SAML API then component will load the certificate.

in the code it is reading like this

samlConfiguration.ServiceProviderConfiguration = new ServiceProviderConfiguration
{
Name = serviceProviderName,
AssertionConsumerServiceUrl = "~/Sso/SAML/AssertionConsumerService",
CertificateFile = string.Format("Sso\\Certificates\\{0}", serviceProviderCertificateFile),
CertificatePassword = serviceProviderCertificatePassword
};
4

The code looks fine.
The link was talking about checking permissions to access the certificate file and private key.
Permissions is one of the most common problems.
However, perhaps it would be quicker to send the log file so we can check what the inner exception is and confirm whether or not it’s a permissions issue.

5
[quote]
ComponentSpace - 5/7/2018
The code looks fine.
The link was talking about checking permissions to access the certificate file and private key.
Permissions is one of the most common problems.
However, perhaps it would be quicker to send the log file so we can check what the inner exception is and confirm whether or not it's a permissions issue.
[/quote]
I can enable logging in local but the error is in Prod, Also in Prod it works good with old certificate but when i replace it with authority issued or IIS self signed certificate i get the below error



[CryptographicException: Invalid algorithm specified.
]
System.Security.Cryptography.CryptographicException.ThrowCryptographicException(Int32 hr) +41
System.Security.Cryptography.Utils.SignValue(SafeKeyHandle hKey, Int32 keyNumber, Int32 calgKey, Int32 calgHash, Byte[] hash, Int32 cbHash, ObjectHandleOnStack retSignature) +0
System.Security.Cryptography.Utils.SignValue(SafeKeyHandle hKey, Int32 keyNumber, Int32 calgKey, Int32 calgHash, Byte[] hash) +97
System.Security.Cryptography.RSACryptoServiceProvider.SignHash(Byte[] rgbHash, Int32 calgHash) +199
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.GenerateSignature(AsymmetricAlgorithm key, String signatureAlgorithm, Byte[] dataToSign) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:107

[SAMLSignatureException: Failed to generate signature]
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.GenerateSignature(AsymmetricAlgorithm key, String signatureAlgorithm, Byte[] dataToSign) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:120
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.CreateQueryString(String messageQueryName, XmlElement samlMessage, String relayState, AsymmetricAlgorithm key, String signatureAlgorithm) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:363
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.CreateRequestRedirectURL(String baseURL, XmlElement samlMessage, String relayState, AsymmetricAlgorithm key, String signatureAlgorithm) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:428

[SAMLBindingException: Failed to create HTTP Redirect URL.]
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.CreateRequestRedirectURL(String baseURL, XmlElement samlMessage, String relayState, AsymmetricAlgorithm key, String signatureAlgorithm) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:440
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.SendRequest(HttpResponse httpResponse, String baseURL, XmlElement samlMessage, String relayState, AsymmetricAlgorithm key, String signatureAlgorithm) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:677

[SAMLBindingException: Failed to send request over HTTP Redirect.]
ComponentSpace.SAML2.Bindings.HTTPRedirectBinding.SendRequest(HttpResponse httpResponse, String baseURL, XmlElement samlMessage, String relayState, AsymmetricAlgorithm key, String signatureAlgorithm) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\Bindings\HTTPRedirectBinding.cs:683
ComponentSpace.SAML2.SAMLServiceProvider.SendAuthnRequest(HttpResponse httpResponse, XmlElement authnRequestElement, String relayState) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\SAMLServiceProvider.cs:132
ComponentSpace.SAML2.SAMLServiceProvider.InitiateSSO(HttpResponse httpResponse, String assertionConsumerServiceUrl, String relayState, String partnerIdP) in c:\Sandboxes\ComponentSpace\SAMLv20\Library\SAMLServiceProvider.cs:678
Ansarada.AuthoritiesOnline.Web.RedirectToLogin.Page_Load(Object sender, EventArgs e) in C:\Users\Source\Repos\Prod\Web\RedirectToLogin.aspx.cs:34
System.Web.UI.Control.OnLoad(EventArgs e) +103
System.Web.UI.Control.LoadRecursive() +68
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3811

6

The “Invalid algorithm specified” usually means that the cryptographic service provider (CSP) associated with the private key doesn’t support SHA-256.
If you run, openssl pkcs12 -in <your.pfx>, what CSP name does it list?

7
[quote]
ComponentSpace - 5/7/2018
The "Invalid algorithm specified" usually means that the cryptographic service provider (CSP) associated with the private key doesn't support SHA-256.
If you run, openssl pkcs12 -in , what CSP name does it list?
[/quote]

I executed the command on IIS generated self signed cert



8

The RSA SChannel Cryptographic Provider doesn’t support SHA-256 signatures.
The correct CSP is the “Microsoft Enhanced RSA and AES Cryptographic Provider”.
Please take a look at the following link to update your PFX file using openssl.
https://www.componentspace.com/Forums/1578/SHA256-and-Converting-the-Cryptographic-Service-Provider-Type

9
[quote]
ComponentSpace - 5/7/2018
The RSA SChannel Cryptographic Provider doesn't support SHA-256 signatures.
The correct CSP is the "Microsoft Enhanced RSA and AES Cryptographic Provider".
Please take a look at the following link to update your PFX file using openssl.
https://www.componentspace.com/Forums/1578/SHA256-and-Converting-the-Cryptographic-Service-Provider-Type
[/quote]

Excellent Thanks , it worked


10

You’re welcome. :slight_smile: