Is it possible to detect S/MIME content types (enveloped or signed) using OpenSSL CMS API? I would prefer to avoid pre-parsing S/MIME headers and let OpenSSL to detect whether message is signed or ...
From what I understand it seems that S/MIME uses PKCS #7 which can handle various different types of encryption. How is the choice of encryption method made by the e-mail client and how do I know what ...
After having evaluated the potential use of S/MIME to sign and encrypt my mails (see Reading older mails signed with a certificate that has meanwhile expired) I have now also had a look at PGP as an ...