Recommendation for Block Cipher Modes of Operation: The CCM Mode for Authentication and Confidentiality [including updates through 7/20/2007]

Published

May 12, 2004

Author(s)

Morris J. Dworkin

Abstract

This Recommendation defines a mode of operation, called Counter with Cipher Block Chaining-Message Authentication Code (CCM), for a symmetric key block cipher algorithm. CCM may be used to provide assurance of the confidentiality and the authenticity of computer data by combining the techniques of the Counter (CTR) mode and the Cipher Block Chaining-Message Authentication Code (CBC-MAC) algorithm.

Citation

Special Publication (NIST SP) - 800-38C

Report Number

800-38C

NIST Pub Series

Special Publication (NIST SP)

Pub Type

NIST Pubs

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DOI Link

Keywords

authenticated encryption, authentication, block cipher, confidentiality, cryptography, encryption, information security, message authentication code, mode of operation

Citation

Dworkin, M. (2004), Recommendation for Block Cipher Modes of Operation: The CCM Mode for Authentication and Confidentiality [including updates through 7/20/2007], Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.SP.800-38C (Accessed October 9, 2025)