billyjov/rsaauth.md

Created March 12, 2018 01:55

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Can't login into typo3 backend caused by rsaauth error.

Raw

Error Message

Error type: 500 Internal server error
Error message: No OpenSSL backend could be obtained for rsaauth
Error description: Login into TYPO3 is not possible anymore, as no OpenSSL backend for rsaauth is available.

Possible causes

Extension rsaauth is not available locally
Open ssl is not available or enabled on current php installation

Possible solutions

Solution 1 (Not recommended)

Turn rsaauth off by changing 'loginSecurityLevel' => 'rsa' to 'loginSecurityLevel' => 'normal' into LocalConfiguration.php.

or

Turn off rsaauth by adding following lines in your local configurations

unset($TYPO3_CONF_VARS['BE']['loginSecurityLevel']);
unset($TYPO3_CONF_VARS['FE']['loginSecurityLevel']);
$TYPO3_CONF_VARS['EXT']['extList'] = str_replace('rsaauth,','',$TYPO3_CONF_VARS['EXT']['extList']);
$TYPO3_CONF_VARS['EXT']['extList_FE'] = str_replace('rsaauth,','',$TYPO3_CONF_VARS['EXT']['extList_FE']);

EFFECT: It works, because rsa is no longer activated and you can log in to the backend.
AFTER EFFECT: It's disable some security modules in your backend like password salt and hash process[1]

Solution 2 (recommended)

Turn on the open ssl on your current machine

Step 1: Add or uncomment extension=php_openssl.dll in your php.ini (e.g for xampp users extension=php_openssl.dll)
Step 2: Add Open ssl to your environement variable like this (for xampp users)

- go to environement variable on window and create new one 
Name: OPENSSL_CONF
Value: PATH_TO_XAMPP\php\extras\openssl\openssl.cnf

Step 3: Restart Apache server.
Step 4 (optional): Reboot your computer.

Sources:

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