Bugtraq mailing list archives
Re: Secure Science issues preview of their upcoming block cipher
From: David Covin <dcovin () nmr mgh harvard edu>
Date: Fri, 25 Mar 2005 11:43:00 -0500 (EST)
Wouldn't a proof that AES-128 were reducible to CS2-128, so that any successful attack on CS2-128 would also constitute a successful attack on AES-128, provide exactly the situation that he describes? CS2-128 would be "provably as secure as" AES-128. On Thu, 24 Mar 2005, Adam Shostack wrote:
Really? How does one go about proving the security of a block cipher? My understanding is that you, and others, perform attacks against it, and see how it holds up. Many of the very best minds out there attacked AES, so for your new CS2 cipher to be "provably just as secure as AES-128," all those people would have had to have spent as much time and energy as they did on AES. That strikes me as unlikely, there's a lot more interest in hash functions today. Adam PS: I've added the cryptography mail list to this. Some of the folks over there may be interested in your claims. On Wed, Mar 23, 2005 at 05:00:25PM -0800, BugTraq wrote: | Secure Science is offering a preview of one of the 3 ciphers they will | be publishing througout the year. The CS2-128 cipher is a 128-bit block | cipher with a 128 bit key. This cipher is proposed as an alternative | hardware-based cipher to AES, being that it is more efficient in | hardware, simpler to implement, and provably just as secure as AES-128. | | http://www.securescience.net/ciphers/csc2/ | | -- | Best Regards, | Secure Science Corporation | [Have Phishers stolen your customers' logins? Find out with DIA] | https://slam.securescience.com/signup.cgi - it's free! |
Current thread:
- Secure Science issues preview of their upcoming block cipher BugTraq (Mar 24)
- Re: Secure Science issues preview of their upcoming block cipher Adam Shostack (Mar 25)
- Re: Secure Science issues preview of their upcoming block cipher Jerrold Leichter (Mar 25)
- Re: Secure Science issues preview of their upcoming block cipher Ralf-Philipp Weinmann (Mar 25)
- Re: Secure Science issues preview of their upcoming block cipher David Covin (Mar 25)
- Re: Secure Science issues preview of their upcoming block cipher devnull (Mar 26)
- Re: Secure Science issues preview of their upcoming block cipher Jerrold Leichter (Mar 25)
- Re: Secure Science issues preview of their upcoming block cipher Adam Shostack (Mar 25)