This part of ISO/IEC 11770 defines key management mechanisms based on asymmetric cryptographic techniques. It specifically addresses the use of asymmetric techniques to achieve the following goals.1) Establish a shared secret key for a symmetric cryptographic technique between two entities A and B by key agreement. In a secret key agreement mechanism, the secret key is the result of a data exchange between the two entities A and B. Neither of them can predetermine the value of the shared secret key.2) Establish a shared secret key for a symmetric cryptographic technique between two entities A and B by key transport. In a secret key transport mechanism, the