Which method does nextcloud use to encrypt user passwords in the database ?
It is not encrypted, it is hashed:
https://www.php.net/manual/en/function.password-hash.php
It’s a one way function, so if I give you a password, you can easily check if it is the same of the hashed value (you hash the password I gave you, and add the salt, …).
The way back should be very hard, so telling the password based on a hash.
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Thank you very much for your answers