Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #97513

Re: Hiding code from intruders, a different slant on an old question

Show all headers | View raw

On Thu, 08 Oct 2015 08:44:43 -0600, Ian Kelly wrote:

> On Wed, Oct 7, 2015 at 6:01 PM, Dennis Lee Bieber
> <wlfraed@ix.netcom.com> wrote:
>> 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>
> 
> It doesn't really matter how much you add; any Caesar cipher is going to
> fall easily to just a little bit of frequency analysis. Consider an
> extreme case, where the range of X is the size of the entire Unicode
> character set. If the message is written in a Latin-based character set,
> chances are good that the majority of the characters will fall within a
> range of <96, giving the attacker a great starting point to brute-force
> from.

Oh please
the Caesar cypher was mentioned as a simplification for the purpose of 
demonstration.
it was not intended to be even a remotely serious suggestion

which I am sure at least Denis understood when he posted his tongue in 
cheek reply.


-- 
Economists can certainly disappoint you.  One said that the economy would
turn up by the last quarter.  Well, I'm down to mine and it hasn't.
		-- Robert Orben

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Hiding code from intruders, a different slant on an old question cl@isbd.net - 2015-10-07 10:38 +0100
  Re: Hiding code from intruders, a different slant on an old question "Littlefield, Tyler" <tyler@tysdomain.com> - 2015-10-07 08:00 -0400
  Re: Hiding code from intruders, a different slant on an old question alister <alister.nospam.ware@ntlworld.com> - 2015-10-07 13:05 +0000
    Re: Hiding code from intruders, a different slant on an old question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-10-07 20:01 -0400
      Re: Hiding code from intruders, a different slant on an old question cl@isbd.net - 2015-10-08 11:28 +0100
    Re: Hiding code from intruders, a different slant on an old question Ian Kelly <ian.g.kelly@gmail.com> - 2015-10-08 08:44 -0600
      Re: Hiding code from intruders, a different slant on an old question alister <alister.nospam.ware@ntlworld.com> - 2015-10-08 15:46 +0000
        Re: Hiding code from intruders, a different slant on an old question Ian Kelly <ian.g.kelly@gmail.com> - 2015-10-08 10:33 -0600

csiph-web