PMAC, which stands for Parallelizable MAC, is a message authentication code algorithm. It was created by Phillip Rogaway (patent pending).
PMAC is a method of taking a block cipher and creating an efficient message authentication code that is provably reducible in security to the underlying block cipher.
PMAC is similar in functionality to the OMAC algorithm.
References
PMAC (cryptography) Wikipedia(Text) CC BY-SA