A system for processing multiple types of security schemes includes a server having a claims engine that extracts claim(s) from security token(s) and maps extracted claims to other claims. The term claim as used in this context is a statement about a token's subject. The claims engine can extract claim(s) from one or more different types of security tokens corresponding to the multiple security schemes. These extracted claim(s) can then be selectively mapped to other claims using mapping information that is accessible to the server. The security decision can then be based on the extracted and/or derived claim(s) rather than tokens. This system can thereby support multiple security schemes and simplify the security process for the user.