Overview#
Cipher-based Message Authentication Code (CMAC) is a Cryptographic algorithm and a variation of CBC-MAC that Black and Rogaway proposed and analyzed under the name XCBC and submitted to NIST.SP.38.The XCBC algorithm efficiently addresses the security deficiencies of CBC-MAC, but requires three keys. Iwata and Kurosawa proposed an improvement of XCBC and named the resulting algorithm One-Key CBC-MAC (OMAC) in their papers. They later submitted OMAC1, a refinement of OMAC, and additional security analysis.
The OMAC algorithm reduces the amount of key material required for XCBC.
Cipher-based Message Authentication Code is equivalent to OMAC1.
More Information#
There might be more information for this subject on one of the following:- [#1] - One-key_MAC
- based on information obtained 2018-05-16-