---
title: strongAuthenticationUser
description: Object class for augmenting entries that use certificate-based authentication, as described in X.521 clause 6.15.
component: pingds
version: 8.1
page_id: pingds:schemaref:oc-strongAuthenticationUser
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/oc-strongAuthenticationUser.html
---

# strongAuthenticationUser

Object class for augmenting entries that use certificate-based authentication, as described in X.521 clause 6.15.

This object class is deprecated. Use `pkiUser` instead.

|                       |                                                                                                     |
| --------------------- | --------------------------------------------------------------------------------------------------- |
| *OID*                 | 2.5.6.15                                                                                            |
| *Names*               | strongAuthenticationUser                                                                            |
| *Superior classes*    | [top](oc-top.html)                                                                                  |
| *Class type*          | AUXILIARY: for use in augmenting attributes of entries that already have a structural object class. |
| *Required attributes* | [objectClass](at-objectClass.html), [userCertificate](at-userCertificate.html)                      |
| *Origin*              | [RFC 4523](https://datatracker.ietf.org/doc/html/rfc4523)                                           |
| *Schema file*         | 00-core.ldif                                                                                        |