Hi there!

I got a question about this issue.

I got a x509 Certificate on a smartcard which I converted as mentioned above.

Using this method I get the public key as a byte[]. Is there any way I can initialize a PublicKey object using that byte[] to use the smartcard session to encrypt or do I have to use the CSP from the Windows Crypto API?

Greetings

Stephan

I have some problems creating the Object with the given byte[].

At the moment it looks like this:

System.Security.Cryptography.X509Certificates.X509Certificate2 x509cert = Cryptware.NCryptoki.Utils.ConvertCertificate((X509Certificate)certs[0]);
byte[] x509key = x509cert.GetPublicKey();

CryptokiCollection template = new CryptokiCollection();
template.Add(new ObjectAttribute(ObjectAttribute.CKA_CLASS, CryptokiObject.CKO_PUBLIC_KEY));
template.Add(new ObjectAttribute(ObjectAttribute.CKA_TOKEN, false));
template.Add(new ObjectAttribute(ObjectAttribute.CKA_PRIVATE, false));
template.Add(new ObjectAttribute(ObjectAttribute.CKA_LABEL, "Key"));
template.Add(new ObjectAttribute(ObjectAttribute.CKA_ID, "1"));

I'm missing the understanding of how to create the Key object using the key which I read from the certificate, as the EncryptInit required a Key Object.

Stephan

Even though it might look like spamming, I could narrow down the problem a little.

I tried adding single items to the template and it kept working until I added the public exponent.

Am I missing something?

I'm getting the modulus and the exponent by exporting it to a xml string and reading the values between the brackets.