This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I am trying to figure out why the liferay portal restricted the number of special characters/symbols to use in password. When I dig into its API, it is restricted to 9 characters which are configured in property file with a key "passwords.passwordpolicytoolkit.charset.symbols" and having values "_ . ! @ $ * = - ?".
There are many other special characters like #, ^. % etc, but they were not included by default.
I knew we can customize and include as many symbols as we want to, but is there any specific reason why liferay restricted these characters?