Validate Strong Password
Posted by admin on July 25, 2008
If you ever had to code a user authentication system, you probably know how much fun it can be to write your own strong password validation. Luckily, Charles Forsyth has developed a regular expression (and published it at Regular Expression Library) that will validate a strong password.
The regular expression works for passwords that:
- are at least 15 characters long
- contain at least one (1) numerical digit
- contain at least one lowercase character
- contain at least one special character (such as !, @, #, %, etc.)
Strong passwords to be validated may not contain any whitespace, and they cannot contain the strings pass, word or password.
Filed Under: Web Design and Development, web security
