Date: Fri, 20 Aug 2004 00:48:43 +1000 From: Tig <tigger@onemoremonkey.com> To: freebsd-security@freebsd.org Subject: Re: Report of collision-generation with MD5 Message-ID: <20040820004843.011b8de8@piglet.goo> In-Reply-To: <20040818182957.GK346@cowbert.net> References: <200408181724.i7IHORYl013375@bunrab.catwhisker.org> <20040818175804.GI346@cowbert.net> <41239B0C.1000703@rdslink.ro> <20040818182957.GK346@cowbert.net>
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On Wed, 18 Aug 2004 14:29:57 -0400 "Peter C. Lai" <sirmoo@cowbert.net> wrote: > On Wed, Aug 18, 2004 at 09:08:12PM +0300, Claudiu wrote: > > hello, > > > > please explain what do you mean by "reverse the hash". Is this the > > recreation of the originial message from its hash ? > > The short answer is yes. The slightly longer answer is that such is > only one specific case. The general case is that the digest should not > reveal any information about the original message. > If this is the case, then it would be very cool! Imagine sending 32 bytes, then 'reverse the hash' to get XX MB's worth of data :] That would be great compression! -Tig
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