WebApp Sec mailing list archives
Re: MD5 math question
From: Chris Varenhorst <varenc () MIT EDU>
Date: Tue, 03 Jan 2006 18:31:26 -0800
Its going to be determined by how the hash is being cracked.A dictionary search is going to have a much much lower probability of finding
a collided password then an exhaustive search of all characters (which would find all collided passwords) As far as the actual math goes, no idea! Jeff Robertson wrote:
Assume that a password between 1 and 24 ASCII characters was stored as an MD5 hash. No salt. What is the probability that someone cracking the password will find not the password that the user originally chose, but a different password that happens to collide with it? Intuitively it seems so unlikely that you wouldn't ever expect to see it. But what is the probability really? -------------------------------------------------------------------------------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 -------------------------------------------------------------------------------
Jeff Robertson wrote:
Assume that a password between 1 and 24 ASCII characters was stored as an MD5 hash. No salt. What is the probability that someone cracking the password will find not the password that the user originally chose, but a different password that happens to collide with it? Intuitively it seems so unlikely that you wouldn't ever expect to see it. But what is the probability really? -------------------------------------------------------------------------------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 -------------------------------------------------------------------------------
-------------------------------------------------------------------------------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:
- MD5 math question Jeff Robertson (Jan 03)
- 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)