<div dir="ltr">As of today, the private keys used to grant access to an account on the Blockchain are vulnerable to quantum attacks. Likewise, Blockchain encryption is also vulnerable and could lead to somebody gaining control over the public blockchains and/or changing data that is deemed immutable. <br><div><br></div><div>There is still time to develop quantum-proof public/private key creation and Blockchain encryption. One more significant todo on the list. </div><div><br></div><div>Jerry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 2, 2022 at 10:36 AM Adam Broun <<a href="mailto:abroun@gmail.com">abroun@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div> First of all, this development is a highly specific use-case, not a general purpose computer. Here's a better explanation <a href="https://arstechnica.com/science/2022/06/manipulating-photons-for-microseconds-tops-9000-years-on-a-supercomputer" target="_blank">https://arstechnica.com/science/2022/06/manipulating-photons-for-microseconds-tops-9000-years-on-a-supercomputer</a></div><div><br></div><div>Second, quantum computing is likely to break encryption that relies on prime factorization being hard, which underpins a lot of public key systems. But many symmetric encryption algos are unaffected. So it will be a challenge, but not the end of the world.</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 2, 2022 at 10:04 AM Steve Isenberg <<a href="mailto:smisenberg@gmail.com" target="_blank">smisenberg@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">So this means that the security we've been feeling using complex passwords may end soon.</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">According to the article, quantum computers solve a 9,000 year problem in 36 microseconds. Amazing.</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">So it could conceivably solve a 9,000,000 year problem in 36 milliseconds (36,000 microseconds) or a 250,000,000 year problem in a second.</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">From (<a href="https://vpnalert.com/resources/how-long-does-it-take-to-crack-a-password/" target="_blank">https://vpnalert.com/resources/how-long-does-it-take-to-crack-a-password/</a>) it would take up to 46,000,000 years to crack a 15 character password using numbers, upper and lower case letters using a conventional computer; with a quantum computer this would be about 1/5 second.</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">From (<a href="https://www.komando.com/security-privacy/check-your-password-strength/783192/" target="_blank">https://www.komando.com/security-privacy/check-your-password-strength/783192/</a>) if you use a 18 character password with numbers, upper & lower case letters, and symbols it would take a conventional computer up to 7,000,000,000,000 (7qd) years; a quantum computer would take up to 28,000 seconds, under 8 hours.</div><br><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">Regards,</div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)">-steve<br></div><div class="gmail_default" style="font-family:"trebuchet ms",sans-serif;font-size:small;color:rgb(11,83,148)"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 2, 2022 at 9:08 AM <<a href="mailto:palbin24@yahoo.com" target="_blank">palbin24@yahoo.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto"><div>Interesting overview of the current state of quantum computing </div><div><br></div><a href="https://www.theregister.com/2022/06/02/quantum_advantage_canada/" target="_blank">https://www.theregister.com/2022/06/02/quantum_advantage_canada/</a><br><br><div dir="ltr">Peter</div></div>===============================================<br>
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