Re: fyi: Adi Shamir's microprocessor bug attack

2007-11-28 Thread James Muir
James A. Donald wrote: James Muir wrote: Can anyone think of a deployed implementation of RSA signatures that would be vulnerable to the attack Shamir mentions? Hashing and message blinding would seem to thwart it. As I said, public key encryption has long been known to be weak against

Re: fyi: Adi Shamir's microprocessor bug attack

2007-11-23 Thread James A. Donald
James Muir wrote: Can anyone think of a deployed implementation of RSA signatures that would be vulnerable to the attack Shamir mentions? Hashing and message blinding would seem to thwart it. As I said, public key encryption has long been known to be weak against chosen plaintext and chosen

Re: fyi: Adi Shamir's microprocessor bug attack

2007-11-21 Thread James Muir
' =JeffH ' wrote: From: John Young [EMAIL PROTECTED] Subject: Adi Shamir's microprocessor bug attack To: [EMAIL PROTECTED] Date: Sat, 17 Nov 2007 09:50:31 -0500 (GMT-05:00) Adi Shamir's note on a microprocessor bug attack on public key cryptography featured in the NY Times today:

Re: fyi: Adi Shamir's microprocessor bug attack

2007-11-21 Thread James A. Donald
' =JeffH ' wrote: Adi Shamir Computer Science Department The Weizmann Institute of Science Israel With the increasing word size and sophisticated optimizations of multiplication units in modern microprocessors, it becomes increasingly likely that they contain some undetected bugs. This was

Re: fyi: Adi Shamir's microprocessor bug attack

2007-11-21 Thread Christian Paquin
' =JeffH ' wrote: From: John Young [EMAIL PROTECTED] [...] Research Announcement: Microprocessor Bugs Can Be Security Disasters [...] A similar attack can be applied to any security scheme based on discrete logs modulo a prime, and to any security scheme based on elliptic curves (in which we can