Help required with SHA256 in C

view story

https://bbs.archlinux.org – How can i generate a SHA256 hash for a message signed with a private key? I have tried searching for library and functions online. I can see functions like sha256sum  but i can't find how to get the signing done with a private key and generate the hash. Sanchayan https://bbs.archlinux.org/profile.php?id=63674 2013-05-17T07:35:04Z (HowTos)