Okay... it got stripped... SRP-6 protocol posted on=20

http://refined-audiometrics.com/downloads/SRP-6.png

- DM

On Jan 31, 2010, at 03:02 AM, David McClain wrote:

> Okay, not fair... that troika took me about 18 months from start to =
finish. That works out to around 6 man-months each, figure 30-40 KLOC in =
each module of the three. We don't have that kind of time for a simple =
challenge...
> So try this one instead: SRP-6 Secure Remote Password protocol for =
authenticated login between client and server. You will need to be able =
to generate a 1024-bit prime number of the form P =3D 2*N+1, find a =
decent sized primitive root to get good bit mixing in the exponentiation =
routines, provide two socket connections that initiate this protocol off =
the bat, and provide the SHA256, MD5, and AES-128 for the protocol.=20
>=20
> Attached PNG (if it makes it through, otherwise I'll post the exchange =
protocol on my web site). That page describes the interchange between =
client and server. As a shared pass phrase lets use "Forth / Lisp =
Challenge". This ought to take a few days at most, if you have to =
develop the encryption routines. Otherwise, it should take no more than =
an hour or so.
>=20
>=20
> -- Binary/unsupported file stripped by Ecartis --
> -- Type: image/png
> -- File: Screen shot 2010-01-31 at 03.01.56 .png
>=20
>=20
> -- Attached file included as plaintext by Ecartis --
>=20
>=20
> On Jan 31, 2010, at 01:26 AM, Elizabeth D Rather wrote:
>=20
>> David McClain wrote:
>>> ...
>>>=20
>>> But there are certain problem domains where Forth is most =
applicable, =3D
>>> and others where it is not. The height of compiler technology has =
been =3D
>>> achieved in languages like OCaml and Haskell. For moderately =
complex =3D
>>> languages you could certainly slog your way through and come up with =
a =3D
>>> passable system all written in Forth, but the time it would take =
would =3D
>>> be orders of magnitude longer, except in very narrow niches -- such =
as =3D
>>> when writing an Assembler for a foreign machine where you want to =3D
>>> Meta-Compile Forth for it. I have never seen shorter Assemblers than =
=3D
>>> those developed in Forth.
>>>=20
>> I would love an opportunity to test that assertion on a challenge =
rather=20
>> more complex than a "mere assembler".
>>=20
>> Cheers,
>> Elizabeth
>>=20
>> --=20
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
>> Elizabeth D. Rather (US & Canada) 800-55-FORTH
>> FORTH Inc. +1 310-491-3356
>> 5155 W. Rosecrans Ave. #1018 Fax: +1 310-978-9454
>> Hawthorne, CA 90250
>> http://www.forth.com
>>=20
>> "Forth-based products and Services for real-time
>> applications since 1973."
>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=20
>>=20
>> =
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>>=20
>>=20
>=20
> Dr. David McClain
> dbm_at_refined-audiometrics.com
>=20
>=20
>=20
>=20
>=20
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>=20
>=20

Dr. David McClain
dbm_at_refined-audiometrics.com

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Received on Sun Jan 31 2010 - 02:09:12 PST