[148888] in cryptography@c2.net mail archive
Re: [Cryptography] Dual_EC_DRBG backdoor: a proof of concept
daemon@ATHENA.MIT.EDU (John Kelsey)
Fri Jan 3 01:21:15 2014
X-Original-To: cryptography@metzdowd.com
In-Reply-To: <44DF5EB9-951E-4D31-B4F8-BDDD10084C7B@callas.org>
From: John Kelsey <crypto.jmk@gmail.com>
Date: Thu, 2 Jan 2014 20:31:00 -0500
To: Jon Callas <jon@callas.org>
Cc: Cryptography Mailing List <cryptography@metzdowd.com>,
Jon Callas <jon@callas.org>, ianG <iang@iang.org>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
If we replaced dual ec drbg's output function by taking the parity of the output point's scalar value, it looks to me like we'd have a secure drbg despite the potentially evil choice of P and Q, with whatever good theoretical properties came from dual ec drbg.
--John
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