PKCS7 signatures

Question

Hello folks.

For those who works with Digital Signature in PKCS7 format.

.NET framework comes with the new class SignedCms, wich allows the generation of PKCS7 signatures. But I faced a challenge: to insert a CRL into the signed package, so the receptor can validate the signature with a past valid certificate.

I didn't find a way to do that. Even using the old CAPICOM I think it's impossible to create a PKCS7 with CRL attached. The same is valid for TimeStamp information, I cannot insert it in the package.

Dos anybody knows some way to do that?

Thanks!

Bruno.