PMAC, which stands for parallelizable MAC, is a
message authentication code
In cryptography, a message authentication code (MAC), sometimes known as an authentication tag, is a short piece of information used for authentication, authenticating and Data integrity, integrity-checking a message. In other words, it is used t ...
algorithm. It was created by
Phillip Rogaway.
PMAC is a method of taking a
block cipher
In cryptography, a block cipher is a deterministic algorithm that operates on fixed-length groups of bits, called ''blocks''. Block ciphers are the elementary building blocks of many cryptographic protocols. They are ubiquitous in the storage a ...
and creating an efficient message authentication code that is reducible in security to the underlying block cipher.
PMAC is similar in functionality to the
OMAC algorithm.
Patents
PMAC is no longer patented and can be used royalty-free. It was originally patented by
Phillip Rogaway, but he has since abandoned his patent filings.
References
External links
Phil Rogaway's page on PMAC* Changhoon Lee, Jongsung Kim, Jaechul Sung, Seokhie Hong, Sangjin Lee. "Forgery and Key Recovery Attacks on PMAC and Mitchell's TMAC Variant", 2006
(ps)
Rust implementation
Message authentication codes
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