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Re: Pure Python Data Mangling or Encrypting

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To python-list@python.org
From Randall Smith <randall@tnr.cc>
Subject Re: Pure Python Data Mangling or Encrypting
Date Wed, 24 Jun 2015 14:00:38 -0500
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On 06/24/2015 01:29 PM, Grant Edwards wrote:
> On 2015-06-24, Randall Smith <randall@tnr.cc> wrote:
>> On 06/24/2015 06:36 AM, Steven D'Aprano wrote:
>>
>>> I don't understand how mangling the data is supposed to protect the
>>> recipient. Don't they have the ability unmangle the data, and thus
>>> expose themselves to whatever nasties are in the files?
>>
>> They never look at the data and wouldn't care to unmangle it.
>
> I obviously don't "get it". If the recipient is never going look at
> the data or unmangle it, why not convert every received file to a
> single null byte?  That way you save on disk space as well --
> especially if you just create links for all files after the initial
> one.  ;)
>
> [I supposed next you're going to tell me that Windows filesystems
> don't support links.]
>
>> The purpose is primarily to prevent automated software (file
>> indexers, virus scanners) from doing bad things to the data.
>
> Life under windows must be more tiresome than I imagined (or could
> imagine) if you have to jump through such hoops to keep "automated
> software" from doing bad things to your data files.
>

These are machines storing chunks of other people's data.  The data 
owner chunks a file, compresses and encrypts it, then sends it to 
several storage servers.  The storage server might be a Raspberry PI 
with a USB disk or a Windows XP machine - I can't know which.


I don't use Windows and don't recommend it for this software. 
Nevertheless, many people do use it.

-Randall

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Thread

Pure Python Data Mangling or Encrypting Randall Smith <randall@tnr.cc> - 2015-06-23 14:02 -0500
  Re: Pure Python Data Mangling or Encrypting Steven D'Aprano <steve@pearwood.info> - 2015-06-24 21:36 +1000
    Re: Pure Python Data Mangling or Encrypting Grant Edwards <invalid@invalid.invalid> - 2015-06-24 14:02 +0000
      Re: Pure Python Data Mangling or Encrypting Emile van Sebille <emile@fenx.com> - 2015-06-24 08:52 -0700
        Re: Pure Python Data Mangling or Encrypting Grant Edwards <invalid@invalid.invalid> - 2015-06-24 16:16 +0000
          Re: Pure Python Data Mangling or Encrypting Chris Angelico <rosuav@gmail.com> - 2015-06-25 02:23 +1000
            Re: Pure Python Data Mangling or Encrypting Grant Edwards <invalid@invalid.invalid> - 2015-06-24 18:23 +0000
          Re: Pure Python Data Mangling or Encrypting Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-06-24 21:24 -0400
      Re: Pure Python Data Mangling or Encrypting Chris Angelico <rosuav@gmail.com> - 2015-06-25 01:55 +1000
      Re: Pure Python Data Mangling or Encrypting Emile van Sebille <emile@fenx.com> - 2015-06-24 09:09 -0700
    Re: Pure Python Data Mangling or Encrypting Randall Smith <randall@tnr.cc> - 2015-06-24 13:20 -0500
      Re: Pure Python Data Mangling or Encrypting Grant Edwards <invalid@invalid.invalid> - 2015-06-24 18:29 +0000
        Re: Pure Python Data Mangling or Encrypting Randall Smith <randall@tnr.cc> - 2015-06-24 14:00 -0500
          Re: Pure Python Data Mangling or Encrypting Grant Edwards <invalid@invalid.invalid> - 2015-06-24 21:24 +0000
            Re: Pure Python Data Mangling or Encrypting Randall Smith <randall@tnr.cc> - 2015-06-24 18:13 -0500
    Re: Pure Python Data Mangling or Encrypting Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-06-24 21:33 -0400
    Re: Pure Python Data Mangling or Encrypting Randall Smith <randall@tnr.cc> - 2015-06-25 14:41 -0500

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