Date: Thu, 18 Oct 2018 17:10:38 +0200 From: Jakub Wilk <jwilk@...lk.net> To: oss-security@...ts.openwall.com Subject: Re: Travis CI MITM RCE * zugtprgfwprz@...rnkuller.de, 2018-08-31, 22:25: >I.e., my point was that for a given key that's uploaded with a fixed >fingerprint, we're not talking about 2^(b/2) collision complexity, but >2^(b-1) second preimage complexity. Nitpicking, but for an ideal n-bit hash function, on avergage you need 2ⁿ (not 2ⁿ⁻¹) evalutations of the function to find the preimage. -- Jakub Wilk
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