One-key MAC
From Wikipedia, the free encyclopedia
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).
[edit] External links
 |
This cryptography-related article is a stub. You can help Wikipedia by expanding it. |
| Hash algorithms: Gost-Hash | HAS-160 | HAS-V | HAVAL | MDC-2 | MD2 | MD4 | MD5 | N-Hash | RadioGatún | RIPEMD | SHA family | Snefru | Tiger | VEST | WHIRLPOOL | crypt(3) DES |
| MAC algorithms: DAA | CBC-MAC | HMAC | OMAC/CMAC | PMAC | UMAC | Poly1305-AES | VEST |
| Authenticated encryption modes: CCM | EAX | GCM | OCB | VEST Attacks: Birthday attack | Collision attack | Preimage attack | Rainbow table | Brute force attack |
| Standardization: CRYPTREC | NESSIE Misc: Avalanche effect | Hash collision | Hash functions based on block ciphers |
| History of cryptography | Cryptanalysis | Cryptography portal | Topics in cryptography |
| Symmetric-key algorithm | Block cipher | Stream cipher | Public-key cryptography | Cryptographic hash function | Message authentication code | Random numbers |
