scd: Fix for NIST P-256

[Werner Koch]

On Fri,  5 Dec 2014 06:06, gniibe at fsij.org said:

> For RSA-4096, it takes more than 8.7 second.  For NIST P-256, it's
> 0.28 second (real time measured on host PC by 'time gpg --clearsign...').

That is quite an improvement.

> The fixes are simple error handlings and reflect private key format
> change of curve name.  Once, we used curve OID, but it's name now.
>
> OK to commit?

Sure, your gnuk is the only ECC implementation anyway and thus you
should know best.



Shalom-Salam,

   Werner

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