- One-key MAC
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OMAC (One-key MAC) is a message authentication code constructed from a block cipher much like the PMAC algorithm.
Officially there are two OMAC algorithms (OMAC1 and OMAC2) which are both essentially the same except for a small tweak. OMAC1 is equivalent to CMAC which became an NIST recommendation in May 2005.
It is free for all uses (no patents).
External links
- More information on OMAC
- NIST Special Publication 800-38B
- Phillip Rogaway's statement on intellectual property status of CMAC
Cryptographic hash functions and message authentication codes (MACs) Common functions Functions SHA-3 finalists BLAKE · Grøstl · JH · Keccak · SkeinMAC algorithms Authenticated
encryption modesAttacks Misc. Standardization Cryptography Categories:- Cryptography stubs
- Message authentication codes
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