How to customize Regular Expression for a strong password in asp classic?

Posted on 2008-10-07
Medium Priority
Last Modified: 2012-05-05
Hi experts,
I'm trying to customize regular exp. to only allow certain special characters like #$@^+. the one I'm using is working but not quiet the way I want. I would reject any special charancter that I do not allow but the problem is if I enter a valid special character and then I enter a non valid special character it will accept it because it finds a valid one in the string. Here's the one I use:
Dim RegExpPass
Set RegExpPass = new RegExp
With RegExpPass
.Pattern = "^.*(?=.{8,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$^+]).*$"
.IgnoreCase = True
.Global = True
End With
Question by:bryanche
  • 2
LVL 27

Accepted Solution

ddrudik earned 500 total points
ID: 22662420
.Pattern = "^(?=.{8,})(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$^+])[\da-zA-Z@#$^+]*$"

Note that your use of:
.IgnoreCase = True
Invalidates your apparent requirement of one or more A-Z chars:

Author Comment

ID: 22662602

Hi ddrudik,
your solution was fantastic. Really appreciate it.
LVL 27

Expert Comment

ID: 22662898
Thanks for the question and the points.

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Do you hate spam? I do, and I am willing to bet you do as well. I often wonder, though, "if people hate spam so much, why do they still post their email addresses on the web?" I'm not talking about a plain-text posting here. I am referring to the fa…
Not long ago I saw a question in the VB Script forum that I thought would not take much time. You can read that question (Question ID  (http://www.experts-exchange.com/Programming/Languages/Visual_Basic/VB_Script/Q_28455246.html)28455246) Here (http…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
Suggested Courses

587 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question