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Strong Password Regular Expression Needed

routledge
routledge asked
on
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Last Modified: 2008-02-01
I need a strong password regular expression to fulfil the following criteria:

1) 8-12 characters in length
2) At least one lower case letter
3) At least one upper case letter
4) At least one number
5) At least one non-alphanumeric-character
6) No spaces allowed

What would be great too is to not allow characters to be repeated more than three in a row.
i.e. AAA1#bcdef is NOT ALLOWED
but AA1AA#bcdef is ALLOWED

Any suggestions of regular expressions greatly appreciated.
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