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plandon 2009-06-16 13:55

SHA-1 Crypto Hash weakened
 
The 160 bit SHA-1 crypto hash has been further weakened.

There is a collision attack [I](not a full break) [/I]that allows 2[SUP]52[/SUP] attempts, within the range of a distributed attack.

[URL]http://www.theregister.co.uk/2009/06/10/digital_signature_weakness/[/URL]

[FONT=CMR10][SIZE=2][FONT=CMR10][SIZE=2][LEFT]Cameron McDonald[/SIZE][/FONT][/SIZE][/FONT][FONT=CMR10][SIZE=2][FONT=CMR10][SIZE=2] Philip Hawkes[/SIZE][/FONT][/SIZE][/FONT][FONT=CMR10][SIZE=2][FONT=CMR10][SIZE=2], and Josef Pieprzyk[/SIZE][/FONT][/SIZE][/FONT][FONT=CMR7][SIZE=1][FONT=CMR7][SIZE=1][/LEFT]
[/SIZE][/FONT][/SIZE][/FONT][FONT=CMR6][SIZE=1][FONT=CMR6][SIZE=1][LEFT][/SIZE][/FONT][/SIZE][/FONT][FONT=CMR9][SIZE=1][FONT=CMR9][SIZE=1]Centre for Advanced Computing, Algorithms and Cryptography[/LEFT]
Department of Computing, Macquarie University
[URL="http://eprint.iacr.org/2009/259.pdf"][SIZE=2]http://eprint.iacr.org/2009/259.pdf[/SIZE][/URL]

[SIZE=2]There is now an open competition for a new crypto hash able to withstand 2[SUP]256[/SUP] attempts.[/SIZE]
[URL="http://www.theregister.co.uk/2008/11/04/secure_hash_competition/"][SIZE=2]http://www.theregister.co.uk/2008/11/04/secure_hash_competition/[/SIZE][/URL]
[/SIZE][/FONT][/SIZE][/FONT]


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