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Re: [Cfrg] Recent SM2 and SM3 drafts update

"Blumenthal, Uri - 0558 - MITLL" <uri@ll.mit.edu> Thu, 20 February 2014 16:39 UTC

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From: "Blumenthal, Uri - 0558 - MITLL" <uri@ll.mit.edu>
To: Sean Shen 沈烁 <shenshuo@cnnic.cn>, "cfrg@irtf.org" <cfrg@irtf.org>
Date: Thu, 20 Feb 2014 11:39:13 -0500
Thread-Topic: [Cfrg] Recent SM2 and SM3 drafts update
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Subject: Re: [Cfrg] Recent SM2 and SM3 drafts update
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On 2/19/14 22:45 , "Sean Shen 沈烁" <shenshuo@cnnic.cn> wrote:

>>Are there (free :) reference implementations available?
>Yes, there are free implementations, please check the infor web I
>included in the email:
>http://218.241.108.63/wiki/en/index.php/Main_Page
>There is a "software implementation" link on the left.

Nice! 

Unfortunately, quite a few things - including directory name in at least
one case - are in Chinese (literally :). Since unfortunately I don't
speak/read Chinese, it adds unnecessary difficulties. Suggestion: edit it
so they are entirely in English, preferably using ASCII.

Also, I'd like to second the question that Joachim asked earlier: what are
the Copyright and Intellectual Property statements for this code, and for
these algorithms? Who owns them, and who does the owner allow usage of
those algorithms (and of that code)? On what conditions (if any are
stated)?

Also, I'm interested in the SM2 suite, especially its Authenticated Key
Exchange part. Us there (a) a complete description in English, and (b)
source code available for it? There was a paper at CANS 2011 "Comments on
SM2 Key Exchange" that pointed out a weakness, and suggested a fix for it.
Can you tell whether that suggestion has been incorporated in the current
SM2 key exchange standard?

Again, to repeat myself and echo Joachim: in order to do anything with
these algorithms (even to look at them) we need to know their
licensing/IPR and copyright status.

Thanks!

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