Re: Hash Table Collisions (n.runs-SA-2011.004)
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- Subject: Re: Hash Table Collisions (n.runs-SA-2011.004)
- From: Mark Hamburg <mark@...>
- Date: 2011年12月29日 14:02:20 -0800
On Dec 29, 2011, at 12:59 PM, fredrik danerklint wrote:
>> A secure implementation would introduce some randomizing element per run
>
> I think it already does that since it using the length of the string as a (random)seed.
Nope. Just create a fixed length string longer than 32 (31?) characters. The hash will include the length but will skip some of the characters. Those skipped characters can be used as a counter to generate a series of strings with equal hashes.
Mark