SlackBuildsOrg/libraries/liboauth
..
liboauth.info
liboauth.SlackBuild
README
slack-desc

liboauth is a collection of POSIX-c functions implementing the OAuth
Core RFC 5849 standard. liboauth provides functions to escape and
encode parameters according to OAuth specification and offers high-level
functionality to sign requests or verify OAuth signatures as well as
perform HTTP requests.

Note: If you want to build with NSS suport instead of OpenSSL pass
NSS=yes to the script.