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Authenticated Encryption with Associated Data
Authenticated Encryption with Associated Data

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!!! Overview
[{$pagename}] ([AEAD]) is defined in [RFC 5116] and defines a uniform interface and a [registry|IANA Registry] for such [algorithms].
[Authenticated Encryption] [1] is a form of [encryption] that, in addition to providing [confidentiality] for the [plaintext|message] that is encrypted, provides a way to check its [authenticity|Authentication].
Authenticated Encryption with Associated Data, or [AEAD], adds the ability to check the [integrity] and [authenticity|Authentication] of some Associated Data (AD), also called "additional authenticated data", that is not encrypted.
[RFC 5116] also defines an [Authenticated Encryption with Associated Data (AEAD) Parameters] [IANA Registry]
!! Why use "Associated Data"
As a very general rule, the purpose of Associated Data (hereafter "AD") is to bind a ciphertext to the context where the it is supposed to appear, so that attempts to "cut-and-paste" a valid ciphertext into a different context can be detected and rejected.[3]]
!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [Authenticated encryption: Relations among notions and analysis of the generic composition paradigm|https://cseweb.ucsd.edu/~mihir/papers/oem.pdf|target='_blank'] - based on information obtained 2016-02-16
* [#2] - [Authenticated-Encryption with Associated-Data|http://web.cs.ucdavis.edu/~rogaway/papers/ad.html|target='_blank'] - based on information obtained 2016-02-16
* [#2] - [What is the purpose of associated authenticated data in AEAD?|https://security.stackexchange.com/a/179279/70391|target='_blank'] - based on information obtained 2018-02-08-
This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthorTop