title: SignedCms alternative in .NET Core
body: <p>Does an alternative to System.Security.Cryptography.Pkcs.SignedCms class exist in .NET Core? Or do I have to dig into BouncyCastle, like they do in WinRT case? <a href="https://stackoverflow.com/questions/22658501/is-there-an-alternative-of-signedcms-in-winrt">Is there an alternative of SignedCMS in WinRT?</a></p>