What data type to use for hashed password field and what length?

Question

I\'m not sure how password hashing works (will be implementing it later), but need to create database schema now.

I\'m thinking of limiting passwords to 4-20 charact

Answer 1

I've always tested to find the MAX string length of an encrypted string and set that as the character length of a VARCHAR type. Depending on how many records you're going to have, it could really help the database size.