1. ANSI X9.19, Financial institution retail message authentication. American Bankers Association (1986)
2. Federal Information Processing Standard 180-2, Secure Hash Standard, National Institute of Standards and Technology, U.S. Department of Commerce (August 2002)
3. Federal Information Processing Standard 197, Advanced Encryption Standard (AES), National Institute of Standards and Technology, U.S. Department of Commerce (November 2001)
4. Federal Information Processing Standard 198, The Keyed-Hash Message Authentication Code (HMAC), National Institute of Standards and Technology, U.S. Department of Commerce (March 2002)
5. ISO/IEC 9797-1, Information technology - Security Techniques - Message Authentication Codes (MACs) - Part 1: Mechanisms using a block cipher, ISO (1999)