IBM to Provide Security w/o Sacrificing Privacy Using Hash

gpg.20.subu at spamgourmet.com gpg.20.subu at spamgourmet.com
Fri May 27 21:55:59 CEST 2005


Hi Alex

Thanks for your good, informative reply

I'll try and catch up with the recommended reading 

Subu


Alex Mauer - hawke at hawkesnest.net wrote:

>gpg.20.subu at spamgourmet.com wrote:
>
>>I thought that two *non* identical names - as in case below will *not*
>>create the same hash
>>If it will, what is the probability ? 
>
>
>The probability of this happening is extremely low.
>
>For a 128-bit hash, such as md5, the probability is 1 in 2^128 (1 in
>340,282,366,920,938,463,463,374,607,431,768,211,456)
>
>For a 160-bit hash, such as sha-1 which PGP uses, the probability is 1
>in 2^160, 1 in
>1,461,501,637,330,902,918,203,684,832,716,283,019,655,932,542,976).
>

[.............]



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