The structure of the application / pkcs7-mime object (.p7m, .p7c) is of interest. The question is how to create an application / pkcs7-mime object without using System.Security.Cryptography.Pkcs?

    1 answer 1

    There is a specification , in theory everything is described there, but I don’t know if you are ready for such a feat - I would not undertake to study this document.

    You can also take Reflector and decompile the classes in System.Security.Cryptography.Pkcs

    Or, another option: search for third-party libraries