How to use nist_generate_key

[Yann Garcia]

Hello Werner,

Thank you for your answer.

Best regards,

Yann Garcia
Senior Software Engineer
Microsoft MCAD.net Certified
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On Wed, 14 Nov 2018 at 18:50, Werner Koch <wk at gnupg.org> wrote:

> On Tue, 13 Nov 2018 09:16, garcia.yann at gmail.com said:
>
> > I'm looking for sample indicating of to use the function
> > nist_generate_key()  using ECDH?
>
> That is an internal function of libgcrypt and you can't use it from your
> application.  You need to use Libgcrypt's API to do that.  Check the
> manual for the gcry_pk_genkey function.  To create an ECC keypair for
> the NIST P-521 curve, you need to use these parameters
>
>       "(genkey(ecc(curve nistp521)(flags nocomp)))"
>
> convert them to an s-expression object and pass it to gcry_pk_genkey.
> There are several examples for it in libgcrypt's soruce code (under
> tests/) and you can also look into GnuPG (agent/genkey.c:agent_genkey is
> the core which is called from g10/keygen.c:gen_ecc).
>
>
> Salam-Shalom,
>
>    Werner
>
> --
> Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.
>
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