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Groups > sci.crypt > #32961

Re: Introduction me

From "Chris M. Thomasson" <nospam@nospam.nospam>
Newsgroups sci.crypt
Subject Re: Introduction me
Date 2015-10-15 12:13 -0700
Organization Aioe.org NNTP Server
Message-ID <mvottj$r0e$1@speranza.aioe.org> (permalink)
References (1 earlier) <mvjtg0$tjc$1@speranza.aioe.org> <mvk0hh$mf0$1@dont-email.me> <mvmiv7$oqq$1@speranza.aioe.org> <mvmjd6$dtv$1@dont-email.me> <mvo57c$ubk$1@dont-email.me>

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>"Richard Heathfield" wrote in message news:mvo57c$ubk$1@dont-email.me...

>>On 14/10/15 23:02, Rich wrote:
>>> Chris M. Thomasson <nospam@nospam.nospam> wrote:
[...]
>>> FWIW, I converted the ciphertext into hexbytes in ASCII because I
>>> liked the way Richard Heathfield presented his ciphertext challenges
>>> to this group. It worked great!
>>
>> It was necessary for posting to the group to insure that various NNTP
>> transports and viewers did not corrupt the data.

> The advantages of the method I used were:

[snip advantages of hexbytes in ASCII]

> The disadvantage was that it takes three bytes (two hexits and a space) to 
> represent one byte. This isn't ciphertext inflation as such, because it's 
> only the rather naff transport mechanism that's to blame, not the 
> algorithm, and the inflation gets punctured by the tool that reconstructs 
> the binary from the hex data.

Exactly right. The inflation in not the fault of the algorithm, its part
of the “convenience” of showing the ciphertext in ASCII hexbytes. I not
not need to add the space between each hexbyte, but it sure makes them
easier to see individually!  ;^)


> >> What do you think about using a checkbox that allows a user to generate
> >> ASCII hexbytes or raw output dumped into the ciphertext textarea?
> >
> > A very bad idea.

> Doesn't that rather depend on his objectives? If his intent is, say, for 
> people to grab the ciphertext so that they can (literally) have a crack at 
> it on their home machines, then the above may well make this easier for 
> them, which would be a good thing, right? It sure beats copying and 
> pasting 8947h ry4ifabdklf r4yu89w4 $^&*( from an output window.

This is exactly why I did it Richard, and I am sorry for not making this 
clear.

;^(

Also, I am worried about a “cut-and-paste” keeping all of the non-printable
characters, such as null bytes from a textarea in HTML5. I need to test this
by filling a textarea A with a bunch of nulls and other non-printable 
characters,
then copy it over to another textarea B and validating that A = B.

My Javascript and HTML5 skills are a bit rusty!

;^/


Therefore, I think adding a checkbox wrt displaying the ciphertext in ASCII
hexbytes
is a good thing?

Humm... 

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Thread

Introduction me eaglesondouglas@gmail.com - 2015-10-12 10:26 -0700
  Re: Introduction me Rich <rich@example.invalid> - 2015-10-12 17:45 +0000
    Re: Introduction me eaglesondouglas@gmail.com - 2015-10-13 08:28 -0700
      Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-13 16:09 +0000
      Re: Introduction me Rich <rich@example.invalid> - 2015-10-13 16:19 +0000
  Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-12 17:46 +0000
    Re: Introduction me Karl-Uwe Frank <karl.frank@freecx.co.uk> - 2015-10-12 21:19 +0200
      Re: Introduction me Rich <rich@example.invalid> - 2015-10-12 20:24 +0000
        Re: Introduction me Johan Wevers <johanw@vulcan.xs4all.nl> - 2015-10-13 10:08 +0200
          Re: Introduction me Rich <rich@example.invalid> - 2015-10-13 16:20 +0000
          Re: Introduction me Rich <rich@example.invalid> - 2015-10-13 16:24 +0000
            Re: Introduction me Nomen Nescio <nobody@dizum.com> - 2015-10-14 16:20 +0200
  Re: Introduction me Ribeiro Alvo <ribeiroalvo@gmail.com> - 2015-10-13 03:58 -0700
  Re: Introduction me "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-10-13 14:35 -0700
    Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-13 22:28 +0000
      Re: Introduction me "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-10-14 14:54 -0700
        Re: Introduction me Rich <rich@example.invalid> - 2015-10-14 22:02 +0000
          Re: Introduction me gordonb.loovx@burditt.org (Gordon Burditt) - 2015-10-15 02:39 -0500
            Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-15 08:00 +0000
          Re: Introduction me Richard Heathfield <rjh@cpax.org.uk> - 2015-10-15 13:14 +0100
            Re: Introduction me "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-10-15 12:13 -0700
              Re: Introduction me "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-10-15 12:35 -0700
              Re: Introduction me Rich <rich@example.invalid> - 2015-10-15 22:34 +0000
                Re: Introduction me "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-10-16 01:15 -0700
                Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-16 18:02 +0000
                Re: Introduction me wizzofozz <oscxxxxxxxaas@gmail.com> - 2015-10-16 20:30 +0200
                Re: Introduction me Rich <rich@example.invalid> - 2015-10-16 20:09 +0000
                Re: Introduction me "Chris M. Thomasson" <nospam@nospam.nospam> - 2015-10-19 14:45 -0700
              Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-15 23:16 +0000
        Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-14 22:48 +0000
  Re: Introduction me eaglesondouglas@gmail.com - 2015-10-14 08:03 -0700
    Re: Introduction me omnilobe@gmail.com - 2015-10-14 10:23 -0700
      Re: Introduction me William Unruh <unruh@invalid.ca> - 2015-10-14 17:34 +0000
  Re: Introduction me eaglesondouglas@gmail.com - 2015-10-15 07:21 -0700
  Re: Introduction me Jeffrey Goldberg <nobody@goldmark.org> - 2015-10-18 12:56 -0500
    Re: Introduction me MM <mrvmurray@gmail.com> - 2015-10-18 11:44 -0700
    Re: Introduction me rpw3@rpw3.org (Rob Warnock) - 2015-10-18 18:57 +0000
      Re: Introduction me Jeffrey Goldberg <nobody@goldmark.org> - 2015-10-19 17:52 -0500

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