Dual EC DRBG Memo

Rich Jones rich at openwatch.net
Wed Sep 11 12:20:56 PDT 2013


It's not the actual spec I'm interested in - it's the memo, which could
detail any number of things; how they were able to pressure NIST,
theoretical attacks, actual attacks, known vendors, limitations, etc.

Names, basically. I want to see if there are any names.

R


On Wed, Sep 11, 2013 at 12:15 PM, Yan Zhu <yan at mit.edu> wrote:

> This is the most recent revision of the document in which DUAL_EC_DRBG was
> presented (specifically, in SP800-90A):
> http://csrc.nist.gov/publications/PubsDrafts.html#SP-800-90-A%20Rev.%201,%20B,%20and%20C
>
> Interestingly, review of this document was reopened for public comment a
> few days ago "in light of recent reports."
>
> Looks like the version that nytimes links to can be found here<https://code.google.com/p/squeak-cc-validation/source/browse/trunk/fips/SP800-90_DRBG-June2006-final.pdf?r=3>
> .
>
> It hasn't been confirmed that Dual EC DRBG is used for anything important
> in practice, AFAIK. See
> http://crypto.stackexchange.com/questions/10189/who-uses-dual-ec-drbg.
>
>
> On Wed, Sep 11, 2013 at 11:34 AM, Rich Jones <rich at openwatch.net> wrote:
>
>> NYT confirming suspected Dual EC DRBG backdoor, citing leaked memo, but
>> didn't include the PDF/PPT/mbox/nfo/whatever.. Does anybody have a copy?
>>
>> From
>> http://bits.blogs.nytimes.com/2013/09/10/government-announces-steps-to-restore-confidence-on-encryption-standards/?src=twrhp&_r=1&
>>
>> But internal memos leaked by a former N.S.A. contractor, Edward Snowden,
>>> suggest that the N.S.A. generated one of the random number generators used
>>> in a 2006 N.I.S.T. standard — called the Dual EC DRBG standard<http://web.archive.org/web/20060930163233/http://csrc.nist.gov/publications/nistpubs/800-90/SP800-90_DRBG-June2006-final.pdf>— which contains a back door for the N.S.A. In publishing the standard,
>>> N.I.S.T. acknowledged “contributions” from N.S.A., but not primary
>>> authorship.
>>>
>>
>> R
>>
>
>
>
> --
> Yan Zhu
> http://web.mit.edu/zyan/www/
>



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