What did you try? What worked? What didn't? This is not a code writing service, but we're happy to give pointers and help debug. See How do I post a question effectively?.

You should find some useful guidance with Bitwise Or and Exclusive Or in perlop, sprintf's %x, and hex (or possibly unpack depending on what your input string looks like).

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: Perl XOR by kennethk
in thread Perl XOR by fixu2

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