Hy! Im working in a system for manage documents in timeline process and the requirement is upload a file, verify the content and digital sign the document.
This process is accomplished by several users in different times.
We are thinking in use your CkCrypt2 library for the simplicity to make pkcs7 "opaque" signatures, we have success with one signature, but we don't know how to do the "resign" process or add more signers.
Thanks for all :D