[TYPO3-dev] Getting clear text passwords in authentication service

[Chris Müller]

Hello,

I have to migrate users from another PHP application to TYPO3. The 
passwords of these users are hashed in another way than TYPO3 does. Now 
I created a new service with the highest quality and priority. My new 
service is then called, if a frontend user logs in.

Now I need the password in clear text to validate against the old 
hashing algorithm. This is where I'm stuck. I'm only getting the uident 
property as an rsa encrypted string and no uident_text property. I also 
looked in the saltedpasswords and openid system extension but didn't 
found how to get the clear text password.

Can someone give me a hint or an example how to accomplish this?

Regards,
Chris.