Re: regex for identifying encrypted text

[cavac]

So the problematic block of lines start with set private ", then some junk that doesn't containt quotes and then it ends with a quote, right?

You seem to be parsing this line-by-line, correct? So, modifying your code to make a very rudimentary state machine, i'd guess something like this would do:

my $isprivatekey = 0;
for my $line (@diff) {
    if($isprivatekey) {
        if($line =~ /\"/) {
            # last line of private key
            $isprivatekey = 0;
        }
        next;
    }
    if($line =~ /set\ private\-key/) {
        # uh, get some useless stuff here
        $isprivatekey = 1;
        next;
    }

    next LINE if $line =~ /set password ENC/;
    [...]
}

This should skip the whole private key block altogether

[hippo]

The problem with this approach is that the line with "set private" is the same in both files and therefore will not be featured in the diff. The data between these markers must be removed before the diff is performed.

[QM]

Would diff with context help? Might make the processing simpler in the long run.