message origin authentication - meaning and definition. What is message origin authentication
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What (who) is message origin authentication - 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.
Basic access authentication         
METHOD FOR AN HTTP USER AGENT TO PROVIDE A USER NAME AND PASSWORD WHEN MAKING A REQUEST
Basic authentication; BasicAuthenticationScheme; Basic authentication scheme; HTTP basic authentication; Basic auth; Basicauth; HTTP Basic; Basic HTTP authentication
In the context of an HTTP transaction, basic access authentication is a method for an HTTP user agent (e.g.

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.