This part of ANS X9.24-2004 covers both the manual and automated management of keying material used for financial services such as point-of-sale (POS) transactions (debit and credit), automated teller machine (ATM) transactions, messages among terminals and financial institutions, and interchange messages among acquirers, switches and card issuers. This part of ANS X9.24-2004 deals exclusively with management of symmetric keys using symmetric techniques. Additional parts may be created in the future to address other methods of key management. This part of ANS X9.24-2004 specifies the minimum requirements for the management of keying material. Addressed are all components of the key management life cycle including generation, distribution, utilization, storage, archiving, replacement and destruction of the keying material. An institution's key management process, whether implemented in a computer or a terminal, is not to be implemented or controlled in a manner that has less security, protection, or control than described herein. It is intended that two nodes, if they implement compatible versions of: - the same secure key management method, - the same secure key identification technique approved for a particular method, and - the same key separation methodologies. In accordance with this part of ANS X9.24-2004 will be interoperable at the application level. Other characteristics may be necessary for node interoperability; however, this part of ANS X9.24-2004 does not cover such characteristics as message format, communications protocol, transmission speed, or device interface.