regex for password check that doesn't require special characters

Question

I can't seem to find a regex to use for a website sign-up form that doesn't require users to enter certain characters.

I need a regex which will allow only the following:

a-z
A-Z
0-9
*#_-

There doesn't have to be a number, no required capitals, no required special characters. Spaces are not allowed.

The minimum length is 8, max is 30 but I'm handling that in another part of the code.

In what regex variety? Perl, .Net, JavaScript, PCRE? There are differences between the implementations. Your question is the equivalent of "Give me a function that will do this" without specifying what language you're using. — Ken White, Jan 10 '14 at 03:48
You said you couldn't find a regex to use, but the fact that 4 identical answer sprung up within seconds of each other has determined that you didn't look hard enough. — , Jan 10 '14 at 03:50
WHAT!? You are regex-ing the password? Saying no to spaces? (maybe at the beginning and end of the string is okay...) Note to self: don't sign up on @spock99's web service. — chuthan20, Jan 10 '14 at 03:58

score 2 · Answer 1 · answered Jan 10 '14 at 03:49

Maybe you could try to match this:

^[a-zA-Z0-9*#_-]{8,30}$

How it works:

everything between ^ and $ means that the entire input has to match the following pattern.
[a-zA-Z0-9*#_-] matches a-z or A-Z or * or # or _ or -
{8,30} will need the previous rule to match at least 8 times, at max 30 times.

score 0 · Accepted Answer · answered Jan 10 '14 at 03:49

0

This should do it:

^[a-zA-Z0-9*#_-]{8,30}$

answered Jan 10 '14 at 03:49

Bohemian

score 0 · Answer 3 · answered Jan 10 '14 at 03:49

0

This regex will do what you need in most flavours of regex parser:

^[a-zA-Z0-9*#_-]{8,30}$

answered Jan 10 '14 at 03:49

score 0 · Answer 4 · answered Jan 10 '14 at 03:51

0

Try This

^((?=.*\d)(?=.*[a-zA-Z])[a-zA-Z0-9*#_-]{6,20})$

answered Jan 10 '14 at 03:51

Vignesh Kumar A

4 Answers4