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What (who) is authentication message - definition
KEYED HASH FUNCTION USED TO PROTECT A MESSAGE'S INTEGRITY AND AUTHENTICITY
Message Authentication Code; Message Integrity Code; Partial MAC; Message footprint; Message authentication codes; Message-authentication code; Message integrity code; Message Integrity Check; Keyed hash function; Authentication tag
Message authentication
IN INFORMATION SECURITY
Data authenticity; Authenticity (information security); Data origin authentication; Data-origin authentication; Data Origin Authentication; Message Authentication; Data Authentication; Data authentication; Data origin authenticity; Message authenticity; Data-origin authenticity; Cryptographitcally authenticated; Cryptographic authentication; Cryptographically authenticated
In information security, message authentication or data origin authentication is a property that a message has not been modified while in transit (data integrity) and that the receiving party can verify the source of the message. Message authentication does not necessarily include the property of non-repudiation.
Message authentication code
In cryptography, a message authentication code (MAC), sometimes known as a tag, is a short piece of information used for authenticating a message. In other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed.
Keyed-Hashing Message Authentication
COMPUTER COMMUNICATIONS HASH ALGORITHM
Keyed-Hashing Message Authentication; Hmac; Keyed-hash message authentication code; HMAC-SHA1; HMAC-MD5; HMAC MD5; Hmac MD5; Hmac-MD5; Hmac-md5; Hmac md5; HMAC md5; HMAC-md5; NMAC; KHMAC; Hashed message authentication code; HMAC-SHA256; HMAC SHA1; HMAC SHA256; Hash-based message authentication code; HMAC-SHA-256
<messaging, cryptography> (HMAC) A mechanism for message
authentication using cryptographic hash functions. HMAC
can be used with any iterative cryptographic hash function,
e.g., MD5, SHA-1, in combination with a secret shared key.
The cryptographic strength of HMAC depends on the properties
of the underlying hash function.
[RFC 2104 ].
(1997-05-10)
Wikipedia
Message authentication code
In cryptography, a message authentication code (MAC), sometimes known as an authentication tag, is a short piece of information used for authenticating a message. In other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed. The MAC value protects a message's data integrity, as well as its authenticity, by allowing verifiers (who also possess the secret key) to detect any changes to the message content.
