<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Nov 25, 2014 at 1:04 PM, spike <span dir="ltr"><<a href="mailto:spike66@att.net" target="_blank">spike66@att.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Ja, the one-time pad </blockquote></div><br><a href="http://knowyourmeme.com/photos/342270">http://knowyourmeme.com/photos/342270</a><br><br></div><div class="gmail_extra">A one-time pad is a stream stream of bytes that's XOR'd with each byte of plaintext. Decrypting requires XOR'ing the cyphertext with the same one-time pad. If the pad is sufficiently random, the cyphertext is unbreakable.<br><br><a href="https://en.wikipedia.org/wiki/One-time_pad">https://en.wikipedia.org/wiki/One-time_pad</a><br><br></div><div class="gmail_extra">-Dave<br></div></div>