1996-08-18 - Re: MD5 completely broken!

Header Data

From: “David F. Ogren” <ogren@cris.com>
To: cypherpunks@toad.com
Message Hash: 8d50c0675f300955ed87ef353b8459ad4030d95d80f541816d577988068b7f1c
Message ID: <199608180701.DAA13334@cliff.cris.com>
Reply To: N/A
UTC Datetime: 1996-08-18 10:30:17 UTC
Raw Date: Sun, 18 Aug 1996 18:30:17 +0800

Raw message

From: "David F. Ogren" <ogren@cris.com>
Date: Sun, 18 Aug 1996 18:30:17 +0800
To: cypherpunks@toad.com
Subject: Re: MD5 completely broken!
Message-ID: <199608180701.DAA13334@cliff.cris.com>
MIME-Version: 1.0
Content-Type: text/plain

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To: cypherpunks@toad.com
Date: Sun Aug 18 02:56:44 1996
> 
> >Atfer much scientific research, I have finally found a way to restore 
> >any message given only its MD5 checksum.
> 
> uhm, congratulations <g>
> 
> 
> maybe next time when you break a code and want to make
> some $$$, sell your solution in secret 
> to the people who patented it!!
> 

Not to mention that this is complete nonsense and a troll. No matter how 
weak the MD5 algorithm may or may not be, there are an infinite number of 
possible messages for each checksum. And thus the original message could 
NEVER be restored. Its as secure as a OTP. That's why its called a 
'one-way' hash function.

Not to mention the fact that he misspelled both 'entropy' and 'after'.


P.S. But imagine if it was true! MD5 would become the ultimate compression 
algorithm. Any message could be reduced to a 128 bit archive.
- --
David F. Ogren                |
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PGP Key ID: 0x6458EB29        |  without a bicycle"
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