Password validation - lowercase, uppercase, numbers and special characters

Asked Aug 10 '16 at 14:56

Active Jan 07 '19 at 15:01

Viewed 85 times

How do I validate a password which has to meet the following conditions:

minimum 8 characters
3 of the following 4 criteria met:
1. lower case letters
2. upper case letters
3. numbers
4. special symbols

Example:

rOckeFe11er - Valid (lowercase,uppercase,number)
jona$tHAn - Valid (lowercase, uppercase, special character)
jon134343 - invalid (lowercase,number) - should match at least 3 criteria

I tried using regular expression but finding it difficult with the 3 out of 4 criteria.

edited Jan 07 '19 at 15:01

Cœur

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asked Aug 10 '16 at 14:56

NewUnhandledException

2

Can you post what you have tried with the regular expressions? – Abe Miessler Aug 10 '16 at 14:58
And this one http://stackoverflow.com/questions/22204836/regex-to-find-3-out-of-4-conditions – sabithpocker Aug 10 '16 at 15:06
1

It would probably be easier to use 4 distinct regular expressions and return success when at least 3 of them are matching. – Arnauld Aug 10 '16 at 15:09

Password validation - lowercase, uppercase, numbers and special characters

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