Hello Bernard,
I try use cryptographypack in my http/rest system; up till now I developed my architecture on 32bit platform, using WINAPI DLL to cryptography, that are valid only for 32 bit platforms.
Your Api is interesting for me because it works at 32 or 64 bit, but if I develop a local exe module, testing encode and decode, all works.
When client send a coded message, the server reject decoding message with error -208.
But if the server code message and send it to client, the client decode the message correctly.