If you are interested in how K2 works with claims and OAuth, this is your white paper series. The series is currently comprised of five papers. The first four were oringally published May 11th 2015.
- Authentication and Authorization in K2
- Claim-Based Authentication in K2
- Outbound Authorization and OAuth in K2
- About K2Trust
- Troubleshooting Claims-based Authentication Issues (added August 4th 2015)
You can download the whitepaper series at http://help.k2.com/kb001688.