Understanding Registration db structure

[Th3AnG3L]

Hello,
Can someone help me out to understand how is the logic to create new account in db.
What encryption method is used to store the information in table account
As i see only fields: salt, verifier and session_key are encrypted binary code. I need to understand how its created that logic. SHA1 maybe ?
Also i had understand that salt = stores account password correct?
Verifier i do not know what stores and session_key

[Th3AnG3L]

found my information here: https://www.azerothcore.org/wiki/account#salt