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- Newsgroups: sci.crypt
- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!wupost!cs.utexas.edu!hermes.chpc.utexas.edu!jonathan
- From: jonathan@chpc.utexas.edu (Jonathan Thornburg)
- Subject: Re: transposition ciphers
- Message-ID: <1992Jul26.203334.18202@chpc.utexas.edu>
- Summary: correction re multiple anagramming
- Keywords: cipher transposition multiple anagram broken US civil war
- Sender: jonathan@einstein.ph.utexas.edu (Jonathan Thornburg)
- Organization: U of Texas at Austin / Physics Dept / Center for Relativity
- References: <92207.142318U27239@uicvm.uic.edu> <1992Jul26.074121.15669@chpc.utexas.edu>
- Date: Sun, 26 Jul 92 20:33:34 GMT
- Lines: 26
-
- In article <92207.142318U27239@uicvm.uic.edu> Gerald Strom
- <U27239@uicvm.uic.edu> writes [wrote]:
- >The following is a little piece I wrote recently about transposition
- >ciphers. As I am far from being an expert in this field, I hope I
- >didn't get too much wrong and I would appreciate comments.
- > [description and C code deleted]
-
- In article <1992Jul26.074121.15669@chpc.utexas.edu>
- jonathan@chpc.utexas.edu (Jonathan Thornburg) [I] writes [replied]:
- >Shouldn't you also point out that any transposition cipher can be
- >broken by multiple anagramming? Kahn "The Codebreakers" discusses
- >this and gives a couple of examples of broken transposition ciphers,
- >I believe dating back to the US civil war and the 1884 (?) US
- >presidential election.
-
- Oops, I must have missed a refresh cycle on my brain (this is what
- comes of posting at 230am). My statement was too strong. I should
- have said:
- "Shouldn't you also point out that unless special precautions are
- taken to the contrary, transposition ciphers can be broken by
- multiple anagramming?"
-
- - Jonathan Thornburg
- <jonathan@einstein.ph.utexas.edu> or <jonathan@hermes.chpc.utexas.edu>
- University of Texas at Austin / Physics Dept / Center for Relativity
- and (for a few more months) U of British Columbia / {Astronomy,Physics}
-