---
title: pwdHistory
description: History of previously used passwords.
component: pingds
version: 8.1
page_id: pingds:schemaref:at-pwdHistory
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-pwdHistory.html
---

# pwdHistory

History of previously used passwords.

|                             |                                                                                                              |
| --------------------------- | ------------------------------------------------------------------------------------------------------------ |
| *OID*                       | 1.3.6.1.4.1.42.2.27.8.1.20                                                                                   |
| *Names*                     | pwdHistory                                                                                                   |
| *Description*               | The history of user s passwords                                                                              |
| *Syntax*                    | [OctetString](s-OctetString.html)                                                                            |
| *Equality matching rule*    | [octetStringMatch](mr-octetStringMatch.html)                                                                 |
| *Ordering matching rule*    | [octetStringOrderingMatch](mr-octetStringOrderingMatch.html)                                                 |
| *Single value*              | false: multiple values allowed                                                                               |
| *User modification allowed* | false                                                                                                        |
| *Usage*                     | directoryOperation                                                                                           |
| *Origin*                    | [draft-behera-ldap-password-policy](https://datatracker.ietf.org/doc/html/draft-behera-ldap-password-policy) |
| *Schema file*               | 01-pwpolicy.ldif                                                                                             |