Web hosting Glossary

Related phrases:   hashed message authentication code   hash message authentication code   keyed-hash message authentication code

Definitions of message authentication code:

• A Message Authentication Code is a one-way hash computed from a message and some secret data. Its purpose is to detect if the message has been altered.
  docs.sun.com/source/816-6294-10/glossary.htm
• Data associated with an authenticated message that allows a receiver to verify the integrity of the message. (Glossary of INFOSEC and INFOSEC Related Terms - Idaho State University).
  www.hipaabasics.com/glossary.htm
• in a payment system, a code used to validate the source of integrity of the message.
  www.gbc.t-online.hu/english/bszotare3.htm
• In cryptography, a message authentication code (MAC) is a short piece of information used to authenticate a message. A MAC algorithm (sometimes termed a keyed hash function) accepts as input a secret key as well as the message, and produces a MAC (sometimes known as a tag). ...
  en.wikipedia.org/wiki/Message_authentication_code

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