---
title: "Deprecation: #85960 - AbstractUserAuthentication::compareUident and AbstractAuthenticationService->compareUident"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-85960"
source: "Changelog/9.4/Deprecation-85960-CompareUidentDeprecated.rst"
modified: "2026-09-14T09:47:36+00:00"
---

# Deprecation: #85960 - AbstractUserAuthentication::compareUident and AbstractAuthenticationService->compareUident

See [forge#85960](https://forge.typo3.org/issues/85960)

## Description

Two methods related to old plain text or simple md5 related password checking have
been marked as deprecated after those have been unused or overridden for a while already:

-   `TYPO3\CMS\Core\Authentication\AbstractUserAuthentication->compareUident()`
-   `TYPO3\CMS\Core\Authentication\AbstractAuthenticationService->compareUident()`

## Impact

Calling the above methods will trigger a PHP `E_USER_DEPRECATED` error.

## Affected Installations

Instances using special authentication extensions  might be
affected. The extension scanner should find usages.

## Migration

Do not use plain text or simple md5 based password comparison in authentication services.