1.. include:: ../../Includes.txt 2 3================================================= 4Deprecation: #94309 - GeneralUtility::stdAuthCode 5================================================= 6 7See :issue:`94309` 8 9Description 10=========== 11 12The method :php:`\TYPO3\CMS\Core\Utility\GeneralUtility::stdAuthCode()` 13has not been used within the Core since at least v9. It internally fiddles 14with the `encryptionKey` while using :php:`md5()`. Furthermore, the default 15length of 8 chars could easily lead to hash collisions. The TYPO3 Core already 16provides :php:`\TYPO3\CMS\Core\Utility\GeneralUtility::hmac()` for such 17purposes, which is using `sha1` with a length of 40. Therefore, 18:php:`stdAuthCode()` has been deprecated and will be removed in TYPO3 v12. 19 20Impact 21====== 22 23Calling the method will trigger a PHP :php:`E_USER_DEPRECATED` error. 24 25Affected Installations 26====================== 27 28All TYPO3 installations calling this method in custom code. The extension 29scanner will find all usages as strong match. 30 31Migration 32========= 33 34Replace all usages of the method in custom extension code by either using 35:php:`\TYPO3\CMS\Core\Utility\GeneralUtility::hmac()` or by a custom 36implementation. 37 38.. index:: PHP-API, FullyScanned, ext:core 39