Article View: sci.crypt
Article #3215Re: Decryption Program
From: Erik E. Fair
Date: Mon, 20 Oct 1986 01:52
Date: Mon, 20 Oct 1986 01:52
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There is a program in the netnews distribution called `caesar.c' that will decrypt substitution ciphers by frequency analysis from an english language letter frequency table. This was used in the early days of the USENET to decrypt "rotated" articles with arbitrary letter rotation (this was before "rot13" became the accepted convention for scrambling potentially offensive jokes). I just checked, and it's still in the 2.11 netnews distribution. Erik E. Fair ucbvax!fair fair@ucbarpa.berkeley.edu
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arc1-ca.pugleaf.net!utzoo!watmath!clyde!caip!rutgers!sri-spam!sri-unix!hplabs!ucbvax!ucbarpa.Berkeley.EDU!fairReferences:
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!caip!rutgers!sri-spam!sri-unix!hplabs!ucbvax!ucbarpa.Berkeley.EDU!fair From: fair@ucbarpa.Berkeley.EDU (Erik E. Fair) Newsgroups: sci.crypt Subject: Re: Decryption Program Message-ID: <16191@ucbvax.BERKELEY.EDU> Date: Sun, 19-Oct-86 21:52:32 EDT Article-I.D.: ucbvax.16191 Posted: Sun Oct 19 21:52:32 1986 Date-Received: Tue, 21-Oct-86 22:12:18 EDT References: <2121@mtuxo.UUCP> Sender: usenet@ucbvax.BERKELEY.EDU Organization: University of California at Berkeley Lines: 9