From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Uwe Brauer Newsgroups: gmane.emacs.devel Subject: Re: [ELPA] New package: vigenere Date: Sat, 02 Sep 2017 08:28:21 +0000 Message-ID: <877exho66y.fsf@mat.ucm.es> References: <87o9r1dnir.fsf@escafil> <87o9qz2qc5.fsf@escafil> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1504341003 11751 195.159.176.226 (2 Sep 2017 08:30:03 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 2 Sep 2017 08:30:03 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Sep 02 10:29:47 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1do3o4-0001WH-MF for ged-emacs-devel@m.gmane.org; Sat, 02 Sep 2017 10:29:32 +0200 Original-Received: from localhost ([::1]:56671 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1do3oB-0002Zi-N4 for ged-emacs-devel@m.gmane.org; Sat, 02 Sep 2017 04:29:39 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59368) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1do3nX-0002Z5-0l for emacs-devel@gnu.org; Sat, 02 Sep 2017 04:29:03 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1do3nS-0000KS-DD for emacs-devel@gnu.org; Sat, 02 Sep 2017 04:28:59 -0400 Original-Received: from [195.159.176.226] (port=57252 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1do3nS-0000Js-6I for emacs-devel@gnu.org; Sat, 02 Sep 2017 04:28:54 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1do3n6-000750-9Q for emacs-devel@gnu.org; Sat, 02 Sep 2017 10:28:32 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: emacs-devel@gnu.org Original-Lines: 29 Original-X-Complaints-To: usenet@blaine.gmane.org Mail-Copies-To: never Cancel-Lock: sha1:yr6jnDJONzVnO6u1GuqE//r+Djo= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:217901 Archived-At: >>> "Ian" == Ian Dunn writes: RMS> Please add text to the doc string saying, RMS> This is for historical interest, not a serious system for encryption. RMS> You might think everyone knows that, but most people are not curious RMS> about ciphers. > Done. I often find packages through their functions, so I added a note > about it to the function doc strings and the package commentary, for > good measure. If I am not mistaken a Vigenere cipher is secure, if - the key is as long as the message - the key will only be used once - the key is a random sequence I am not entirely sure, but maybe this was the first implementation of a one time pad. BTW I think historically the autokey cipher, (the secret text is added to the secret key) was also introduced by Vigenere. Maybe you could add feature for historical reasons? Uwe Brauer