Path: csiph.com!au2pb.net!feeder.erje.net!1.eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed7.news.xs4all.nl!nzpost1.xs4all.net!not-for-mail
Return-Path: <python-python-list@m.gmane.org>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.012
X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'subject:code': 0.07; 'subject:question': 0.08; 'message-id:@4ax.com': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'wed,': 0.15; 'alphabet': 0.16; 'encryption': 0.16; 'lower,': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:Hiding': 0.16; 'url:home': 0.18; '2015': 0.20; 'cycles': 0.22; 'header:X-Complaints-To:1': 0.26; '+0000': 0.27; 'least': 0.27; 'publicly': 0.29; 'options': 0.33; 'point,': 0.33; 'add': 0.34; 'unknown': 0.35; 'but': 0.36; 'basic': 0.36; 'to:addr :python-list': 0.36; 'subject:: ': 0.37; 'method': 0.37; 'received:org': 0.37; 'charset:us-ascii': 0.37; 'subject:from': 0.39; 'to:addr:python.org': 0.40; 'still': 0.40; 'more': 0.63; '(utc),': 0.84; '>if': 0.84; '>with': 0.84; 'only...': 0.84; 'dennis': 0.91; 'received:108': 0.93
X-Injected-Via-Gmane: http://gmane.org/
To: python-list@python.org
From: Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject: Re: Hiding code from intruders, a different slant on an old question
Date: Wed, 07 Oct 2015 20:01:28 -0400
Organization: IISS Elusive Unicorn
References: <tp5fec-l15.ln1@esprimo.zbmc.eu> <mv35a3$v1k$1@speranza.aioe.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Gmane-NNTP-Posting-Host: adsl-108-68-178-61.dsl.klmzmi.sbcglobal.net
X-Newsreader: Forte Agent 6.00/32.1186
X-No-Archive: YES
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.20+
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.460.1444262512.28679.python-list@python.org>
Lines: 22
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1444262512 news.xs4all.nl 23853 [2001:888:2000:d::a6]:37575
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:97488

On Wed, 7 Oct 2015 13:05:07 +0000 (UTC), alister
<alister.nospam.ware@ntlworld.com> declaimed the following:


>With a simple Cesar the method is "shift the alphabet by 'X' characters 
>and X is the key
>
>if the key is unknown then the attacker still has to brute force the 
>method (admittedly with only 25 options this is not difficult)

	But who'd consider that with just one-case and alphabet only...

	At the least include upper, lower, numbers, and basic punctuation --
that will add a few more cycles of computation time to break <G>


	But the other point, yes... The most used encryption systems have
publicly known/reviewed algorithms and rely on the secrecy of the key(s).
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/