# ISO 9564-2:1991 — Withdrawn and superseded ISO standards

For ISO 9564-2:1991, item title is Banking — Personal Identification Number management and security — Part 2: Approved algorithm(s) for PIN encipherment; status code is 9599; successor is ISO 9564-2:2005 | ISO/WD 9564-2; withdrawn / published date is 1991-12-18, recorded from its source on 2026-08-05.

- **Identifier:** ISO 9564-2:1991 _(verified: appears in the quote below)_
- **Item title:** Banking — Personal Identification Number management and security — Part 2: Approved algorithm(s) for PIN encipherment _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 9564-2:2005 | ISO/WD 9564-2
- **Withdrawn / published date:** 1991-12-18 _(verified: appears in the quote below)_

## What the source says

> 17310,IS,,ISO 9564-2:1991,Banking — Personal Identification Number management and security — Part 2: Approved algorithm(s) for PIN encipherment,Banque — Gestion et sécurité du numéro personnel d'identification — Partie 2: Algorithme(s) approuvé(s) pour le chiffrement du PIN,1991-12-18,1,['35.240.40'],ISO/TC 68/SC 2,9599,,"[36289,29375]","['en','fr']",1,<p>Specifies the definition of the data encryption algorithm (DEA) as given in ANSI X3.92:1981.</p>

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).