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Article #3112Re: Zimmermann's responses to Sidelnikov's PGP critique
From: Vesselin Bontchev
Date: Mon, 11 Jan 1993 22:47
Date: Mon, 11 Jan 1993 22:47
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tytso@ATHENA.MIT.EDU (Theodore Ts'o) writes: > >> - when considering the hashing function as the automatic device > >>without output, it is enough simply possible to construct the > >>image of reverse automatic device and with using the blanks in > >>text files (or free fields in some standard formats as in DBF), > >>to compensate the hashing function at changed file to former > >>significance. > I interpreted this to mean that Dr. Sidelnikov believes that there is a > design flaw in MD5, which is the hashing function used by PGP. Perhaps I don't believe even that... Look, suppose -you- have found a flaw in MD5 and were to comment about PGP. What would you say? "The hashing function in PGP seems simple enough to defeat"? No, you would say "PGP uses MD5 as a hashing function and as it has been shown (reference my paper, or the results of my lab or whatever), it is easy enough to break it".... My guess here is that Dr. Sidelnikov either hasn't noticed that PGP uses MD5, or does not know what MD5 is... Regards, Vesselin -- Vesselin Vladimirov Bontchev Virus Test Center, University of Hamburg Tel.:+49-40-54715-224, Fax: +49-40-54715-226 Fachbereich Informatik - AGN < PGP 2.1 public key available on request. > Vogt-Koelln-Strasse 30, rm. 107 C e-mail: bontchev@fbihh.informatik.uni-hamburg.de D-2000 Hamburg 54, Germany
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arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!ira.uka.de!Sirius.dfn.de!news.DKRZ-Hamburg.DE!rzsun2.informatik.uni-hamburg.de!fbihh!bontchevReferences:
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Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!ira.uka.de!Sirius.dfn.de!news.DKRZ-Hamburg.DE!rzsun2.informatik.uni-hamburg.de!fbihh!bontchev From: bontchev@fbihh.informatik.uni-hamburg.de (Vesselin Bontchev) Subject: Re: Zimmermann's responses to Sidelnikov's PGP critique Message-ID: <bontchev.726792428@fbihh> Sender: news@informatik.uni-hamburg.de (Mr. News) Reply-To: bontchev@fbihh.informatik.uni-hamburg.de Organization: Virus Test Center, University of Hamburg References: <1993Jan8.223337.14551@athena.mit.edu> Date: 11 Jan 93 22:47:08 GMT Lines: 27