http://www.rfc-editor.org/rfc/rfc4309.txt
RFC 4309: Using Advanced Encryption Standard (AES) CCM Mode with IPsec Encapsulating Security Payload (ESP), R. Housley2005-12-01T23:00:00-00:00This document describes the use of Advanced Encryption Standard (AES) in Counter with CBC-MAC (CCM) Mode, with an explicit initialization vector (IV), as an IPsec Encapsulating Security Payload (ESP) mechanism to provide confidentiality, data origin authentication, and connectionless integrity. [STANDARDS-TRACK]