<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="gmail_extra"><div class="gmail_quote"><div class="">Umm, here is what I'm looking it. I came across patent 8,411,854 (<a href="http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8,411,854.PN.&OS=PN/8,411,854&RS=PN/8,411,854" class="">http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8,411,854.PN.&OS=PN/8,411,854&RS=PN/8,411,854</a>)</div></div></div></div></div></blockquote>Patents are not technical documents in the normal sense; it's usually very difficult to determine what's really going on from a patent. Fortunately, the authors cite an actual technical paper, which you can find at <a href="http://cs.nyu.edu/~zaremba/docs/zkp.pdf" class="">http://cs.nyu.edu/~zaremba/docs/zkp.pdf</a></div><div><br class=""></div><div>I haven't looked at it, but if you want to understand what they are doing, I'd suggest starting there.</div><div><div> -- Jerry</div><div class=""><br class=""></div></div><br class=""></body></html>