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Groups > comp.programming > #5612

Re: JTRIG, SIGDEV

From Johannes Bauer <dfnsonfsduifb@gmx.de>
Newsgroups comp.programming
Subject Re: JTRIG, SIGDEV
Date 2015-08-08 15:25 +0200
Organization albasani.net
Message-ID <mq5008$6ev$1@news.albasani.net> (permalink)
References <mq1nsl$b1r$1@news.albasani.net> <20150807074449.236@kylheku.com> <mq2p8j$99k$1@news.albasani.net> <mq4dlh$4os$1@news.albasani.net> <mq4f1o$72l$1@news.albasani.net>

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On 08.08.2015 10:36, Mok-Kong Shen wrote:

> Oh, I don't remember to have ever claimed that "somehow an RSA-CSPRNG
> would be a prerequisite or the only way to generate RSA keys"!! Could
> you please quote me?

"there would have been a vicious circle in implementation"

No. There isn't. Because RSA-CSPRNG is not the only way to generate RSA
keys. Therefore no "vicious cycle".

> You seem also to be an expert in issues of entropy. Could you please
> read my answer to Kylheku, just sent, and eventually provide answers
> to points that he may not sufficiently cover in his next post?

The posting is so full of errors that it makes my stomach turn.

It starts with the fact that you don't even know what the blocksize of
AES-128 vs. AES-256 is. Hint: They're identical.

Then you continue to say that the output entropy would be half the
output bits. How do you arrive at this conclusion? It is clearly an
obviosly false. If AES were an ideal block cipher, the amount of output
entropy would be the output blocksize. 128 bits for AES.

Then you seem to assume that nonces are reused. They is not. CTR mode of
operation is not safe when nonces are reused, this is a blantly obvious
fact. One that even stands in every textbook should you ever read one.

If counters are not reused and AES were a perfect block cipher, there is
no correlation between outputs. Your whole conclusion therefore makes
zero sense.

Your amateurish understanding of cryptography combined with the
stubborness on completely obvious topics makes for a dangerous combination.

Cheers,
Johannes

-- 
>> Wo hattest Du das Beben nochmal GENAU vorhergesagt?
> Zumindest nicht öffentlich!
Ah, der neueste und bis heute genialste Streich unsere großen
Kosmologen: Die Geheim-Vorhersage.
 - Karl Kaos über Rüdiger Thomas in dsa <hidbv3$om2$1@speranza.aioe.org>

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Thread

JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-07 09:48 +0200
  Re: JTRIG, SIGDEV Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-08-07 09:57 +0200
    Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-07 14:03 +0200
      Re: JTRIG, SIGDEV Kaz Kylheku <kaz@kylheku.com> - 2015-08-07 15:05 +0000
        Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-07 18:20 +0200
  Re: JTRIG, SIGDEV Kaz Kylheku <kaz@kylheku.com> - 2015-08-07 14:51 +0000
    Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-07 19:18 +0200
      Re: JTRIG, SIGDEV Kaz Kylheku <kaz@kylheku.com> - 2015-08-07 21:57 +0000
        Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-08 10:25 +0200
          Re: JTRIG, SIGDEV Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-08-08 19:57 +0200
            Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-08 22:14 +0200
              Re: JTRIG, SIGDEV Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-08-09 12:23 +0200
                Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-09 22:04 +0200
                Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-09 22:08 +0200
                Re: JTRIG, SIGDEV Richard Heathfield <rjh@cpax.org.uk> - 2015-08-11 17:15 +0100
      Re: JTRIG, SIGDEV Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-08-08 10:12 +0200
        Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-08 10:36 +0200
          Re: JTRIG, SIGDEV Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-08-08 15:25 +0200
            Re: JTRIG, SIGDEV Mok-Kong Shen <mok-kong.shen@t-online.de> - 2015-08-08 22:15 +0200

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