[bitcoin-dev] Time to worry about 80-bit collision attacks or not?
pete at petertodd.org
Mon Jan 11 06:57:42 UTC 2016
-----BEGIN PGP SIGNED MESSAGE-----
On 10 January 2016 22:57:15 GMT-05:00, Rusty
> Weirdly, the bitcoin network is doing this much work every 57
> days, for about $92M. If that's all the attack costs, it's under
> 1M in 10 years.
Don't get too caught up in Moore's law here - more likely the attack will become feasible because SHA2 is partially weakened, as happened with SHA1. Having industry standard safety margins would make such a weakening be an academic problem rather than an emergency.
-----BEGIN PGP SIGNATURE-----
-----END PGP SIGNATURE-----
More information about the bitcoin-dev