Create regex for password validation

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Hi All,

I need a password validation regex.

At least 8 characters.
Special character - @ only
Alphanumeric
Uppercase - at least one
Lowercase - at least one

Here is my current regex:

^.*(?=.{8,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[!*@#$%^&+=]).*$

but it accept different kinds of special character. Please help.
Thank you!

Posted 8-Sep-14 23:38pm

Janna Dela Cruz

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2 solutions

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_Asif_ · Accepted Answer · 2014-09-09T00:03:00

Solution 1

Try this

(?=^.{8,}$)(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\s)[0-9a-zA-Z@\-]*$

Look RegExLib[^] for other examples

Posted 9-Sep-14 0:03am

_Asif_

Updated 9-Sep-14 0:15am

v2

George Jonsson · Accepted Answer · 2014-09-09T00:05:00

Solution 2

This should work, I think.

^(?=.*[A-Z])(?=.*[a-z])[a-zA-Z0-9@]{8,}$

This is a good page for getting info about regular expressions.
http://www.regular-expressions.info/[^]

This a good tool for testing regular expressions in an editor.
Regextest[^]

Posted 9-Sep-14 0:05am

George Jonsson