( = cipher-based MAC, "šifripõhine MAC")

olemus
plokkšifril põhinev sõnumiautentimiskoodi algoritm, CBC-MAC edasiarendus (= OMAC1 ), mis kaitseb ka muutuva pikkusega sõnumeid
= a message authentication code (MAC) algorithm
that is based on a symmetric key block cipher

ülevaateid
https://en.wikipedia.org/wiki/One-key_MAC
https://nvlpubs.nist.gov/nistpubs/specialpublications/nist.sp.800-38b.pdf
https://cryptography.io/en/latest/hazmat/primitives/mac/cmac/

standardid
https://tools.ietf.org/html/rfc4493