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Date: Fri, 26 Jun 2015 12:29:06 +1000
Subject: Re: Pure Python Data Mangling or Encrypting
From: Chris Angelico <rosuav@gmail.com>
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On Fri, Jun 26, 2015 at 12:24 PM, Mark Lawrence <breamoreboy@yahoo.co.uk> wrote:
> On 26/06/2015 03:06, Chris Angelico wrote:
>>
>> On Fri, Jun 26, 2015 at 11:17 AM, Mark Lawrence <breamoreboy@yahoo.co.uk>
>> wrote:
>>>>
>>>> Even the famous Enigma
>>>> machine was a lot more than just letter-for-letter substitution - a
>>>> double letter in the cleartext wouldn't be represented by a double
>>>> letter in the result - and once the machine's secrets were figured
>>>> out, the day's key could be reassembled fairly readily.
>>>>
>>>
>>> The day's key for a given network, with the Luftwaffe easily being the
>>> worst
>>> offenders.  Some networks remained unbroken at the end of WWII.
>>
>>
>> I was massively oversimplifying, here. But there's a reason that
>> modern crypto doesn't use str.translate() level ciphers.
>>
>> ChrisA
>>
>
> I should know.  Ever heard of DISCON?  Like to hazard a guess as to who
> worked on it all those years ago?

No, not familiar with it. But I'm guessing you have the crypto
background to know all this stuff, which means you aren't the sort of
person I need to explain things to. Great! :)

ChrisA