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From: David Klempner <klempner@imsanet.org>
Date: Sun, 19 Jan 2020 12:56:11 -0800
Message-ID: <CAP2eGiszqjsEOukZtiaP6nx1f5Y09BGsLSFR2H8vMhPTkkSgZA@mail.gmail.com>
Subject: Re: fx-discuss: Cr28 -- Re: FX Claims that can be judged
To: fx-discuss@ideosphere.com
Cc: "chrisran.bma e-mail" <chrisran.bma@virgin.net>
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 The only way that this claim could be true is if someone's been hiding a
quantum computer capable of running for on the order of 2^64 steps required
by Grover search -- technology that is 10+ years out at best and probably
considerably more -- for over a decade. That seems highly unlikely.

Even then it is somewhat debatable whether Grover's algorithm would qualify
-- while the intent of the claim is clearly about "exhaustively searching
the keyspace" the wording of the claim overspecifies "exhaustive search" in
a manner that may exclude Grover search. It is hard to blame the author
here -- the question predates 1995 and Grover's algorithm wasn't published
until 1996!

Thankfully that tricky intent question is moot.

On Sat, Jan 18, 2020 at 11:14 AM Chris Hibbert <hibbert@mydruthers.com>
wrote:

> Cr28: "A cryptographic key of 128 bits or longer will be broken, by
> exhaustively searching the keyspace, before 2010 UT. "
>
> I've done a little bit of research, and looked at the state of the
> market. I've found no evidence that the net thinks that 128 bit keys
> will be in range in the near future, and this claim is about events at
> least 10 years ago. The (FX) market seems to agree: there are only
> orders to sell, and the last transaction was at a price of 1.
>
> If no one presents evidence to the contrary, I'll resolve this question
> next weekend.
>
> Chris
> --
> All sensory cells [in all animals] have in common the presence of
> ... cilia [with a constant] structure.  It provides a strong
> argument for common ancestry.  The common ancestor ... was a
> spirochete bacterium.
>    --Lynn Margulis (http://edge.org/q2005/q05_7.html#margulis)
>
> Chris Hibbert
> hibbert@mydruthers.com
> Blog:   http://www.pancrit.org
> Twitter: C_Hibbert_reads
> http://mydruthers.com
>

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