Alcance
ISO/IEC 13157-4:2016 specifies the message contents and the cryptographic mechanisms for PID 03. ISO/IEC 13157-4:2016 specifies key agreement and confirmation mechanisms providing mutual authentication, using asymmetric cryptography, and the transport protocol requirements for the exchange between Sender and TTP. NOTE ISO/IEC 13157-4:2016 adds entity authentication to the services provided by ISO/IEC 13157-3 (ECMA-409) NFC-SEC-02.