Path: csiph.com!optima2.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!1.eu.feeder.erje.net!news.albasani.net!.POSTED!not-for-mail
From: Mok-Kong Shen <mok-kong.shen@t-online.de>
Newsgroups: comp.programming
Subject: Re: An advantage of RSA encryption
Date: Tue, 4 Aug 2015 15:49:21 +0200
Organization: albasani.net
Lines: 27
Message-ID: <55C0C2E1.6050603@t-online.de>
References: <mpimf8$cc7$1@news.albasani.net> <mpj2fj$361$1@news.albasani.net> <mpjc91$jt2$1@news.albasani.net> <mplkff$vol$1@news.albasani.net> <mplpk5$9n6$1@news.albasani.net> <20150803102300.194@kylheku.com> <mpqc3n$1q6$1@news.albasani.net> <mpqd07$f8r$1@dont-email.me> <mpqden$416$4@news.albasani.net> <mpqe5v$jse$2@dont-email.me> <55C0BD04.5010305@t-online.de> <mpqffv$p3t$1@dont-email.me>
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-15; format=flowed
Content-Transfer-Encoding: 7bit
X-Trace: news.albasani.net swbfZ45QxoTWVGKgaJQ1j7VEHtjOTvCMlfYgceesIcEiUKbUJGcXJI9DXyegv3v9Pv3YS5xGj0fi8xjZEVq+KO0IQPihsuzLZAIaEvJFeXU27jkNJZQH758UbX3x5ePS
NNTP-Posting-Date: Tue, 4 Aug 2015 13:49:20 +0000 (UTC)
Injection-Info: news.albasani.net; logging-data="bs1ZterO4lcCExPGlXWqPeBDZBYNKaUExkoBML1e26HIdpQnPtID7VYbXy8bVfTJ3E4q28dIDRMFEe0yYwMm4Lc3mRoF3XVGFngYRQ75tWbfctz13xG/zY0ZTYQoeRVEYdfTsDyP+M83qhlrQIcxmD/dpyCdR+qFmuVyBZuRsQA="; mail-complaints-to="abuse@albasani.net"
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0
To: Richard Heathfield <rjh@cpax.org.uk>
In-Reply-To: <mpqffv$p3t$1@dont-email.me>
Cancel-Lock: sha1:LEokkVz7bMTptI+6xk5TlO/mqZs=
Xref: csiph.com comp.programming:5565

Am 04.08.2015 um 15:43 schrieb Richard Heathfield:
> On 04/08/15 14:24, Mok-Kong Shen wrote:
>>
>> I meant naturally the parentheses in my answer to Kylheku, namely:
>>
>> (Note anyway that in HAC there is given a way to implement a CSPRNG
>> with RSA. So, if a CSPRNG were required to implement RSA, that
>> would lead to a viscious circle.)
>
>
> It isn't even a vicious circle, let alone a viscious circle. The easiest
> way to explain this is to consider two CSPRNGs, X and Y.
>
> X can be used to generate RSA primes, thus making it possible to use RSA.
>
> RSA can be used to implement Y.
>
> I don't see the problem, and I certainly don't see any circles, be they
> vicious, viscious, viscous, or even vicarious.

The problem is: Evidently (unless one wants to argue for argument's
sake) the (common) case is that one doesn't yet have a CSPRNG and
wants to have such a one to generate PRNs for an application. Now
how does one proceed??

M. K. Shen