Re: Report of collision-generation with MD5

From: Tig (tigger_at_onemoremonkey.com)
Date: 08/19/04

  • Next message: Poul-Henning Kamp: "Re: Report of collision-generation with MD5" 
    Date: Fri, 20 Aug 2004 00:48:43 +1000
To: freebsd-security@freebsd.org

    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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