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Wednesday, February 23, 2005

SHA-1

Well, so much has been said on this subject. Dunno what's left. Guess I'm just gonna go with:
  1. I concur with Schneier's second statement on the matter: yes, this is an impressive result, cryptanalytically, and yeah, it's time to migrate away from SHA-1. With some haste. It's unlikely anyone's gonna get ripped off any time soon from exploits that arise, but it's also appropriate to get going on ensuring this.
  2. With all due respect to my erstwhile peers (I worked as a reporter for some time, some years back), it's kinda painful watching the mainstream press handle this. Really has been some mangled, confused reporting on the deal. Worst article I saw (see it here) referred to 'Schneier's team', and, weirdly, seemed clearly to imply Schneier himself had done the research and would be publishing a paper shortly (not the Chinese team). That's just really bad reporting, though, I suppose, might just have been due to translation difficulties. And, as a more typical gaffe, the otherwise essentially sensible article in The Sydney Morning Herald today blew the math (or perhaps just dropped some zeroes in layout) with their first estimate--that '12,000 years' ballpark figure for finding a collision in a space of 280 hashes with a hypothetical computer is off by 103--it should read 12,000,000.
Yeah, yeah, I know. I'm so picky. But this is a story about crypto. You'd think they'd have checked the math in the final galleys.

Savages in this town.

(Update: to his credit, the author of the Herald article was happy to fix the 12 million thing. Mebbe I'm just getting cranky in my old age.)