UMAC

In cryptography, a message authentication code based on universal hashing, or UMAC, is a type of message authentication code (MAC) calculated choosing a hash function from a class of hash functions according to some secret (random) process and applying it to the message. The resulting digest or fingerprint is then encrypted to hide the identity of the hash function used. As with any MAC, it may be used to simultaneously verify both the data integrity and the authenticity of a message. UMAC is specified in RFC 4418, it has provable cryptographic strength and is usually a lot less computationally intensive than other MACs. UMAC's design is optimized for 32-bit architectures; a closely related variant of UMAC that is optimized for 64-bit architectures is given by VMAC.

Universal hashing

Let's say the hash function is chosen from a class of hash functions H, which maps messages into D, the set of possible message digests. This class is called universal if, for any distinct pair of messages, there are at most |H|/|D| functions that map them to the same member of D.

Urban Music Association of Canada

UMAC, The Urban Music Association of Canada is a Canadian non-profit organization focused on showcasing and expanding Canadian urban music established in 1996. UMAC offers a variety of service such as workshops, tours and also hosts the Canadian Urban Music Awards. Its current president is Will Strickland.

History

UMAC was established in 1996 to promote urban music in Canada. It has chosen an "Artist of the year" every year since its establishment, a distinction that has been described as "prestigious" by MTV.

See also

Canadian Urban Music Awards

The Canadian Urban Music Awards (also known as Urban X-Posure) were created in 1999 and have been awarded annually since then.

References

External links