Hello bradcathey,

I think tybalt89’s ingenious solution will be hard to beat for simplicity and brevity. But in the spirit of TMTOWTDI, here’s an approach that employs a useful technique presented by BrowserUk here and discussed by me here:

use strict;
use warnings;

my @seqs = qw( qwertyuiop asdfghjkl zxcvbnm );

for my $pwd (qw( asdf aaabbbccc zXcaaabbb aaYUIOPabbb ))
{
    print "$pwd: ", validate_password($pwd, @seqs) ?
          'password ok' : 'no sequences allowed!', "\n";
}

sub validate_password
{
    my  ($password, @sequences) = @_;
    my   $ok = 1;
    my   @seqs;
    push @seqs, $_ =~ /(?=(.{3}))/g for @sequences;

    for (@seqs)
    {
        $ok = 0 && last if $password =~ /$_/i;
    }

    return $ok;
}

[download]

Output:

 1:05 >perl 1706_SoPW.pl
asdf: no sequences allowed!
aaabbbccc: password ok
zXcaaabbb: no sequences allowed!
aaYUIOPabbb: no sequences allowed!

 1:06 >

[download]

Hope this is of interest,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Regular expression to check for qwerty sequence in a password by Athanasius
in thread Regular expression to check for qwerty sequence in a password by bradcathey

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