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<div dir="ltr" data-setdir="false">Yes, this would be true.</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">I think we have a few years for folks to devise encryption schemes which quantum computers would have a much harder time cracking. Today's best encryption schemes (including Blockchain) use large prime numbers in their calculations.But there are other problems which computers have and will continue to have much more difficulty solving. Some of which may be resistant to brute force attempts. So being able to execute a brute force attack orders of magnitude faster may not avail quantum computers in solving some other kinds of problems. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">As for absconding with a bunch of crypto loot, there are already ways to infiltrate and subvert many blockchains. It would be overkill to sic a quantum computer on some of these blockchains. Any Proof of Stake blockchain is vulnerable to the 51% Rule, wherein, if anyone or any group obtains 51% stake n such a blockchain, they can validate pretty much any transactions they want, including fraudulent and duplicate transactions. The new Ethereum blockchain will be vulnerable to this problem, but they are trying to devise safeguards to prevent a 51% stake from ever developing. Good luck with that. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Then there's the social media conspiracy avenue, wherein a site or app like Robin Hood convinces a large number of people to buy then dump a targeted financial instrument (typically a stock with relatively few outstanding shares) thus manipulating the price of the stock until it crashes. The actions of Robin Hood have been very successful in a few cases, and some crypto and NFT assets are vulnerable to similar manipulation. (I'm sure if I got the Robin Hood strategy wrong someone will step up to correct me.) </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">In any event, there is always an arms race in computer security. The problems presented by the security schemes are always in a race with the ever advancing power of computers to crack these schemes. It's been ongoing since computers were invented, and it will continue for the foreseeable future. Quantum computing so far looks like it won't introduce anything earth shattering. But it will make it necessary to invent new cryptographic schemes. </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">-- Bob Primak </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Saturday, June 4, 2022, 01:44:10 PM EDT, Jerome Slate <slatemd@comcast.net> wrote:
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<font size="4">Sooo, yer sayin' if we borrow one of them quantum
computer things for a coupla daze, we cud get all the block chain
passwords, steal alla the tokens, and take off....<br clear="none">
Costa Rica does not have an extradition treaty with the US
government.<br clear="none">
Hola, Puero Viejo !<br clear="none">
<br clear="none">
Jerry Slate</font><br clear="none">
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<div class="yiv2384539066moz-cite-prefix">On 6/2/2022 10:03 AM, Steve Isenberg
wrote:<br clear="none">
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<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">So this means
that the security we've been feeling using complex passwords
may end soon.</div>
<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default"><br clear="none">
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<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">According to the
article, quantum computers solve a 9,000 year problem in 36
microseconds. Amazing.</div>
<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">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 style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default"><br clear="none">
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<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">From (<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://vpnalert.com/resources/how-long-does-it-take-to-crack-a-password/" class="yiv2384539066moz-txt-link-freetext">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 style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default"><br clear="none">
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<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">From (<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.komando.com/security-privacy/check-your-password-strength/783192/" class="yiv2384539066moz-txt-link-freetext">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>
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<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">Regards,</div>
<div style="font-family:trebuchet ms, sans-serif;font-size:small;color:#0b5394;" class="yiv2384539066gmail_default">-steve<br clear="none">
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<div dir="ltr" class="yiv2384539066gmail_attr">On Thu, Jun 2, 2022 at 9:08 AM
<<a rel="nofollow noopener noreferrer" shape="rect" ymailto="mailto:palbin24@yahoo.com" target="_blank" href="mailto:palbin24@yahoo.com" class="yiv2384539066moz-txt-link-freetext">palbin24@yahoo.com</a>>
wrote:<br clear="none">
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<blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;" class="yiv2384539066gmail_quote">
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<div>Interesting overview of the current state of quantum
computing </div>
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<a rel="nofollow noopener noreferrer" shape="rect" target="_blank" href="https://www.theregister.com/2022/06/02/quantum_advantage_canada/" class="yiv2384539066moz-txt-link-freetext">https://www.theregister.com/2022/06/02/quantum_advantage_canada/</a><br clear="none">
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<div dir="ltr">Peter</div>
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