# ISO/IEC 9797-2:2011 — Withdrawn and superseded ISO standards

For ISO/IEC 9797-2:2011, item title is Information technology — Security techniques — Message Authentication Codes (MACs) — Part 2: Mechanisms using a dedicated hash-function; status code is 9599; successor is ISO/IEC 9797-2:2021; withdrawn / published date is 2011-05-02, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 9797-2:2011 _(verified: appears in the quote below)_
- **Item title:** Information technology — Security techniques — Message Authentication Codes (MACs) — Part 2: Mechanisms using a dedicated hash-function _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 9797-2:2021
- **Withdrawn / published date:** 2011-05-02 _(verified: appears in the quote below)_

## What the source says

> 51618,IS,,ISO/IEC 9797-2:2011,Information technology — Security techniques — Message Authentication Codes (MACs) — Part 2: Mechanisms using a dedicated hash-function,Technologies de l'information — Techniques de sécurité — Codes d'authentification de message (MAC) — Partie 2: Mécanismes utilisant une fonction de hachage dédiée,2011-05-02,2,['35.030'],ISO/IEC JTC 1/SC 27,9599,[31136],[75296],['en'],39,"<p>Message Authentication Code (MAC) algorithms are data integrity mechanisms that compute a short string (the Message Authentication Code or MAC) as a complex function of every bit of the data and of a secret key. Their main security property is unforgeability: someone who does not know the se

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).