title: Does mcrypt support asymmetric encryption?
body: <p>I want to use asymmetric encryption of headers in RESTful requests to verify the identity of the system sending the request: i e System A encrypts it's name, timestamp, and the service name using it's public key in a request to System B. System B then uses the public key of System A to decrypt, proving the authenticity of the request.</p>
  
  <p>1) Does php-mcrypt support this? </p>
  
  <p>2) Has anyone benchmarked this type of operation?</p>