This part of ANS X9.24-2003 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
ANSI X9.24 Part 1-2004 history
2009ANSI X9.24 Part 1-2009 Retail Financial Services Symmetric Key Management - Part 1: Using Symmetric Techniques
2004ANSI X9.24 Part 1-2004 Retail Financial Services - Symmetric Key Management - Part 1: Using Symmetric Techniques