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- Xref: sparky sci.crypt:6572 alt.security:5288 alt.security.pgp:475
- Path: sparky!uunet!wupost!waikato.ac.nz!aukuni.ac.nz!cs18.cs.aukuni.ac.nz!pgut1
- Newsgroups: sci.crypt,alt.security,alt.security.pgp
- Subject: Re: PGP 2.1 source posted to alt.sources
- Message-ID: <1993Jan9.000722.27138@cs.aukuni.ac.nz>
- From: pgut1@cs.aukuni.ac.nz (Peter Gutmann)
- Date: Sat, 9 Jan 1993 00:07:22 GMT
- References: <1993Jan7.115335.1216@cs.aukuni.ac.nz> <C0IFAw.3vy@bcstec.ca.boeing.com> <1993Jan8.155007.16181@csi.uottawa.ca>
- Organization: Computer Science Dept. University of Auckland
- Lines: 46
-
- In <1993Jan8.155007.16181@csi.uottawa.ca> cbbrowne@csi.uottawa.ca (Christopher Browne) writes:
-
- >In article <C0IFAw.3vy@bcstec.ca.boeing.com> vanzwol@bcstec.ca.boeing.com (Ted Van Zwol) writes:
- >>This intrigues me. I'm not accusing you (Peter) of anything, but consider:
- >>
- >>How do we know the PGP sources on alt.sources (or even that on any FTP site
- >>for that matter) are "safe". What kind of precautions or checks exist to
- >>prevent bogus code from cropping up. Why couldn't some intelligence agency
- >>get their hands on the code and weaken the encryption algorithm just enough
- >>for them and then distribute the modified source to the rest of the world.
- >>
- >>I haven't looked at the source or the comments myself, so I don't know if
- >>this is already addressed. But, it concerns me. Who's to say the copies of
- >>PGP available are trustworthy? I'm terribly confused...
-
- >The best idea would probably be to have an MD5 signature of (say) the actual
- >text of each post appended to the end. Said signatures could then be
- >published either in:
- >a) sci.crypt
- >b) Some moderated newsgroup?
- >c) The C Users Group magazine?
-
- >or somewhere such.
-
- I thought of clear-signing the post with PGP, but then decided against it
- since it would have involved shipping the entire thing home to sign (I won't
- use PGP on a multiuser system) and back again, and would have almost
- certainly screwed up the automatic unsharing process. Unfortunately until
- there's some organised way of authenticating postings (eg PEM or the
- equivalent functionality in PGP) there isn't any easy way to authenticate
- the posting.
-
- (On the other hand I doubt very much whether the NZ govt could be bothered
- messing around with usenet postings, and if there were discrepancies
- caused by mainpulation on non-NZ sites it would probably be discovered
- pretty quickly when differing versions of the code were found floating
- around).
-
- Peter.
- --
- pgut1@cs.aukuni.ac.nz||p_gutmann@cs.aukuni.ac.nz||gutmann_p@kosmos.wcc.govt.nz
- peterg@kcbbs.gen.nz||peter@nacjack.gen.nz||peter@phlarnschlorpht.nacjack.gen.nz
- (In order of preference - one of 'ems bound to work)
- -- Whoever dies with the most email addresses ... wins --
-
-
-