I am new to joomla, and working on joomla application which is currently running on production environment.
Application contains 1000+ registered users.
As per GDPR Policy, I have requirement for encryption and decryption of PII (User personal information) to prevent data loss.
In my application I am using user personal data for authentication purpose which contain name of user and email id, which needs to be encrypted before storing data in database and also needs to decrypt before using.
I am using core user authentication process of joomla
Application running on below versions Joomla 3.9.7 Php 5.4.16 Apache 2.4.6 MySQL Unix server
I know php5 is EOL now and needs to upgrade the same.