keeth/Net-OAuth — pull request #1 by cosimo (2012-01-05 08:52:33+00:00)
Title: Added HMAC-SHA256 signatures support

I didn't have a test case though, so I'm not sure exactly
of the difference between Digest::SHA::hmac_sha256_base64()
and Digest::SHA::hmac_sha256 + MIME::Base64::encode_base64(),
except there's a '=' appended at the end :-)

Hope you can find this useful and integrate it soon, because we need HMAC-SHA256 in production, and we can do quite some testing on this.