At a glance, this looks like a proprietary re-invention of of https://tools.ietf.org/html/draft-hammer-oauth-v2-mac-token-05 https://tools.ietf.org/html/draft-h

At a glance, this looks like a proprietary re-invention of of https://tools.ietf.org/html/draft-hammer-oauth-v2-mac-token-05 https://tools.ietf.org/html/draft-hammer-oauth-v2-mac-token-...