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From: Gavin Andresen <gavinandresen@gmail•com>
To: Anthony Towns <aj@erisian•com.au>
Cc: Bitcoin Dev <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Time to worry about 80-bit collision attacks or not?
Date: Fri, 8 Jan 2016 10:46:53 -0500	[thread overview]
Message-ID: <CABsx9T3MfndREm9icE-TUF58zsRZ5YsBMvUAMy4E-MmYWxWV=A@mail.gmail.com> (raw)
In-Reply-To: <20160108153329.GA15731@sapphire.erisian.com.au>

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Thanks, Anthony, that works!

So...

How many years until we think a 2^84 attack where the work is an ECDSA
private->public key derivation will take a reasonable amount of time?

And Ethan or Anthony:  can you think of a similar attack scheme if you
assume we had switched to Schnorr 2-of-2 signatures by then?


And to everybody who might not be reading this closely:  All of the above
is discussing collision attacks; none of it is relevant in the normal case
where your wallet generates the scriptPubKey.



-- 
--
Gavin Andresen

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next prev parent reply	other threads:[~2016-01-08 15:46 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-07 19:02 Gavin Andresen
2016-01-07 19:13 ` Matt Corallo
2016-01-07 19:19 ` Adam Back
2016-01-07 20:56   ` Dave Scotese
2016-01-07 21:06     ` Gavin Andresen
2016-01-07 22:56       ` Ethan Heilman
2016-01-07 23:39         ` Gavin Andresen
2016-01-08  1:26           ` Matt Corallo
2016-01-08  1:54             ` Gavin Andresen
2016-01-08 17:38               ` Pieter Wuille
2016-01-08 18:41               ` Peter Todd
2016-01-07 20:40 ` Ethan Heilman
2016-01-07 23:52 ` Pieter Wuille
2016-01-08  1:00   ` Gavin Andresen
2016-01-08  1:27     ` Watson Ladd
2016-01-08  3:30   ` Rusty Russell
2016-01-08  3:41     ` Matt Corallo
2016-01-08 12:02       ` Rusty Russell
2016-01-08 12:38         ` Gavin Andresen
2016-01-08 14:34           ` Watson Ladd
2016-01-08 15:26             ` Adam Back
2016-01-08 15:33           ` Anthony Towns
2016-01-08 15:46             ` Gavin Andresen [this message]
2016-01-08 15:50               ` Gavin Andresen
2016-01-08 15:59                 ` Gavin Andresen
2016-01-11 20:32                 ` Jorge Timón
2016-01-08 16:06               ` Gavin Andresen
2016-01-11  3:57               ` Rusty Russell
2016-01-11  6:57                 ` Peter Todd
2016-01-11 23:57               ` Tier Nolan
2016-01-12  0:00                 ` Tier Nolan
2016-01-12 12:08                   ` Gavin Andresen
2016-01-12 23:22                     ` Zooko Wilcox-O'Hearn
2016-01-08 18:52     ` Peter Todd

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