WebApp Sec mailing list archives
Re: MD5 math question
From: Tim <tim-security () sentinelchicken org>
Date: Sat, 7 Jan 2006 09:26:14 -0500
Nopes. Or I bought the propaganda saying "an incorrect implementation of SHA1 has been broken". Shame on me either way. So what are we left with? SHA-<lots-of-numbers-higher-than-1> ?
Ah, yeah... There was some sort of f-up with the implementation. They were able to quickly fix that and show that their methods still work with the real thing. Well, there's SHA-{224,256,384,512}[1], but those are all built on the same math as SHA-1. They are almost surely more difficult to break, with respect to collisions, than SHA-1, but it's still hard to trust them. Some alternatives are Tiger and Whirlpool, but I don't know if these have had enough scrutiny yet to be trusted. NIST recently hosted a workshop[2] on the issues of replacing SHA-1, and they have some presentation slides online[3] which may be helpful. cheers, tim 1. http://csrc.nist.gov/cryptval/shs.htm 2. http://www.csrc.nist.gov/pki/HashWorkshop/index.html 3. http://www.csrc.nist.gov/pki/HashWorkshop/program.htm ------------------------------------------------------------------------------- Watchfire's AppScan is the industry's first and leading web application security testing suite, and the only solution to provide comprehensive remediation tasks at every level of the application. See for yourself. Download AppScan 6.0 today. https://www.watchfire.com/securearea/appscansix.aspx?id=701300000003Ssh -------------------------------------------------------------------------------
Current thread:
- Re: MD5 math question, (continued)
- Re: MD5 math question Chris Varenhorst (Jan 03)
- Re: MD5 math question Tim (Jan 03)
- RE: MD5 math question Vipul Kumra (Jan 04)
- Memo: Re: MD5 math question tim . m . james (Jan 04)
- Re: MD5 math question Charles Miller (Jan 05)
- Re: MD5 math question exon (Jan 06)
- Re: MD5 math question Tim (Jan 06)
- Re: MD5 math question exon (Jan 06)
- Re: MD5 math question Tim (Jan 07)
- Re: MD5 math question exon (Jan 07)
- Re: MD5 math question Tim (Jan 07)
- Re: MD5 math question exon (Jan 06)
- Re: MD5 math question Charles Miller (Jan 06)
- Re: FW: RE: MD5 math question Chuck (Jan 06)