Full Disclosure mailing list archives
Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1)
From: 3APA3A <3APA3A () SECURITY NNOV RU>
Date: Wed, 21 Mar 2007 21:29:14 +0300
Dear Blue Boar, I know meaning of 'hash function' term, I wrote few articles on challenge-response authentication and I did few hash functions implementations for hashtables and authentication in FreeRADIUS and 3proxy. Can I claim my right for sarcasm after calling ability to bruteforce 160-bit hash 2000 times faster 'a crack'? --Wednesday, March 21, 2007, 8:53:27 PM, you wrote to 3APA3A () SECURITY NNOV RU: BB> 3APA3A wrote:
First, by reading 'crack' I thought lady can recover full message by it's signature. After careful reading she can bruteforce collisions 2000 times faster.
BB> Cracking a hash would never mean recovering the full original message, BB> except for possibly messages that were smaller than the number of bits BB> in the hash value. There are an infinite number of messages that all BB> hash to the same value. BB> The best crack you can have for a hash is to be able collide with an BB> existing hash value and be able to choose most of the message contents. BB> BB -- ~/ZARAZA http://securityvulns.com/ Åñòü òàì âåðñèè Îòåëëî, ãäå Äåçäåìîíà äóøèò Ìàâðà. (Ëåì) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Michael Silk (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) 3APA3A (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Tim (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) 3APA3A (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Valdis . Kletnieks (Mar 21)
- Re: Chinese Professor Cracks Fifth Data SecurityAlgorithm (SHA-1) Dave "No, not that one" Korn (Mar 22)
- Re: Chinese Professor Cracks Fifth Data SecurityAlgorithm (SHA-1) Michael Silk (Mar 23)
- Re: Chinese Professor Cracks Fifth Data SecurityAlgorithm (SHA-1) Dude VanWinkle (Mar 24)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Tim (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) 3APA3A (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Blue Boar (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) 3APA3A (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Blue Boar (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) 3APA3A (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Blue Boar (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) 3APA3A (Mar 21)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) wac (Mar 24)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) Valdis . Kletnieks (Mar 24)
- Re: Chinese Professor Cracks Fifth Data Security Algorithm (SHA-1) wac (Mar 25)