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Author vstinner
Recipients Arfrever, Mark.Shannon, PaulMcMillan, Zhiping.Deng, alex, barry, benjamin.peterson, christian.heimes, dmalcolm, eric.araujo, georg.brandl, gvanrossum, jcea, lemburg, pitrou, terry.reedy, vstinner
Date 2012-01-05.01:05:58
SpamBayes Score 4.134712e-07
Marked as misclassified No
Message-id <1325725559.56.0.557718997796.issue13703@psf.upfronthosting.co.za>
In-reply-to
Content 
> At least for Python 2.x hash(str) and hash(unicode) have to yield
> the same result for ASCII only strings. 

Ah yes, I forgot Python 2: I wrote my patch for Python 3.3. The two hash functions should be modified to be randomized.

> hash("") should always return 0

Ok, I can add a special case. Antoine told me that hash("") gives prefix ^ suffix, which is too much information for the attacker :-)

> for small strings we could use a different seed
> than for larger strings

Why? The attack doesn't work with short strings? What do you call a "short string"?
History
Date User Action Args
2012-01-05 01:05:59vstinnersetrecipients: + vstinner, lemburg, gvanrossum, barry, georg.brandl, terry.reedy, jcea, pitrou, christian.heimes, benjamin.peterson, eric.araujo, Arfrever, alex, dmalcolm, Mark.Shannon, Zhiping.Deng, PaulMcMillan
2012-01-05 01:05:59vstinnersetmessageid: <1325725559.56.0.557718997796.issue13703@psf.upfronthosting.co.za>
2012-01-05 01:05:58vstinnerlinkissue13703 messages
2012-01-05 01:05:58vstinnercreate