Re: SHA1 broken?

2005-03-09 Thread Riad S. Wahby
Tyler Durden [EMAIL PROTECTED] wrote: Then again, if you're looking for sheer, brute performance and design cycle times are not a limiting factor, ASICs are often the way to go. Even in a Variola Suitcase, however, I'd bet some of the trivial functions are off-loaded to an FPGA, though, for

Re: SHA1 broken?

2005-03-09 Thread Tyler Durden
to an FPGA, though, for reasons above. -TD From: Riad S. Wahby [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: Re: SHA1 broken? Date: Tue, 8 Mar 2005 13:26:48 -0600 Tyler Durden [EMAIL PROTECTED] wrote: Well, maybe I misunderstand your statement here, but in Telecom most heavy iron has plenty of FPGAs

Re: SHA1 broken?

2005-03-07 Thread Tyler Durden
Well, what would you call a network processor? An FPGA or a CPU? I think of it as somewhere in between, given credence to the FPGA statement below. -TD From: Major Variola (ret) [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Subject: Re: SHA1 broken? Date: Sat, 05 Mar 2005 06:51:24

Re: SHA1 broken?

2005-02-22 Thread Eugen Leitl
On Sat, Feb 19, 2005 at 03:53:53PM +, Dave Howe wrote: I wasn't aware that FPGA technology had improved that much if any - feel free to correct my misapprehension in that area though :) FPGAs are too slow (and too expensive), if you want lots of SHA-1 performance, use a crypto processor

Re: SHA1 broken?

2005-02-22 Thread Joseph Ashwood
- Original Message - From: Dave Howe [EMAIL PROTECTED] Subject: Re: SHA1 broken? Indeed so. however, the argument in 1998, a FPGA machine broke a DES key in 72 hours, therefore TODAY... assumes that (a) the problems are comparable, and (b) that moores law has been applied to FPGAs

Re: SHA1 broken?

2005-02-22 Thread Dave Howe
Joseph Ashwood wrote: I believe you substantially misunderstood my statements, 2^69 work is doable _now_. 2^55 work was performed in 72 hours in 1998, scaling forward the 7 years to the present (and hence through known data) leads to a situation where the 2^69 work is achievable today in a

Re: SHA1 broken?

2005-02-22 Thread Dave Howe
Eugen Leitl wrote: On Sat, Feb 19, 2005 at 03:53:53PM +, Dave Howe wrote: I wasn't aware that FPGA technology had improved that much if any - feel free to correct my misapprehension in that area though :) FPGAs are too slow (and too expensive), if you want lots of SHA-1 performance, use a

Re: SHA1 broken?

2005-02-18 Thread Joseph Ashwood
- Original Message - From: Dave Howe [EMAIL PROTECTED] Sent: Thursday, February 17, 2005 2:49 AM Subject: Re: SHA1 broken? Joseph Ashwood wrote: I believe you are incorrect in this statement. It is a matter of public record that RSA Security's DES Challenge II was broken in 72 hours

RE: SHA1 broken?

2005-02-18 Thread Trei, Peter
-Original Message- From: [EMAIL PROTECTED] on behalf of Dave Howe Sent: Thu 2/17/2005 5:49 AM To: Cypherpunks; Cryptography Subject: Re: SHA1 broken? Joseph Ashwood wrote: I believe you are incorrect in this statement. It is a matter of public record that RSA Security's DES Challenge

Re: SHA1 broken?

2005-02-17 Thread Dave Howe
Joseph Ashwood wrote: I believe you are incorrect in this statement. It is a matter of public record that RSA Security's DES Challenge II was broken in 72 hours by $250,000 worth of semi-custom machine, for the sake of solidity let's assume they used 2^55 work to break it. Now moving to a

Re: [p2p-hackers] SHA1 broken?

2005-02-17 Thread Eric Murray
On Wed, Feb 16, 2005 at 07:55:15AM -0500, R.A. Hettinga wrote: From: Serguei Osokine [EMAIL PROTECTED] To: Peer-to-peer development. [EMAIL PROTECTED] Subject: RE: [p2p-hackers] SHA1 broken? Date: Wed, 16 Feb 2005 00:11:07 -0800 Okay, so the effective SHA-1 length is 138 bits instead

Re: SHA1 broken?

2005-02-17 Thread James A. Donald
-- There is however a huge problem replace SHA-1 by something else from now to tomorrow: Other algorithms are not as well anaylyzed and compared against SHA-1 as for example AES to DES are; so there is no immediate successor of SHA-1 of whom we can be sure to withstand the possible new

Re: SHA1 broken?

2005-02-17 Thread R.A. Hettinga
--- begin forwarded text Date: Wed, 16 Feb 2005 11:13:23 -0500 (EST) From: Atom Smasher [EMAIL PROTECTED] OpenPGP: id=0xB88D52E4D9F57808; algo=1 (RSA); size=4096; url=http://atom.smasher.org/pgp.txt To: [EMAIL PROTECTED] Subject: Re: SHA1 broken? Sender: [EMAIL PROTECTED] -BEGIN

Re: SHA1 broken?

2005-02-17 Thread Joseph Ashwood
- Original Message - From: James A. Donald [EMAIL PROTECTED] Subject: Re: SHA1 broken? 2^69 is damn near unbreakable. I believe you are incorrect in this statement. It is a matter of public record that RSA Security's DES Challenge II was broken in 72 hours by $250,000 worth of semi

Re: SHA1 broken?

2005-02-17 Thread Roland Dowdeswell
On 1108637369 seconds since the Beginning of the UNIX epoch Dave Howe wrote: Its fine assuming that moore's law will hold forever, but without that you can't really extrapolate a future tech curve. with *todays* technology, you would have to spend an appreciable fraction of the national