[openssl-users] Implementing ECDSA in an engine

[Dmitry Belyavsky]

Hello Reinier,

No, I do not. And may be for your purposes you can use this or that
ECDSA_METHOD setting it into the EC_KEY struct.

On Fri, Jun 26, 2015 at 9:09 PM, Reinier Torenbeek <
reinier.torenbeek at gmail.com> wrote:

>  Hi Dmitry,
>
> Thanks for the response. I suppose I have to do the same thing as well
> then.
>
> I wonder why the ECDSA_METHOD structure and the associated mechanism to
> insert it into an engine is so much different from the DSA_METHOD struct.
> The latter seems more straightforward to use and does not require the whole
> custom PKEY to be set up. Do you know?
>
> Best regards,
> Reinier
>
>
> On 6/26/15 12:51 PM, Dmitry Belyavsky wrote:
>
> Hello Reinier,
>
> On Fri, Jun 26, 2015 at 7:47 PM, Reinier Torenbeek <
> reinier.torenbeek at gmail.com> wrote:
>
>> Hi,
>>
>> The mechanism for implementing ECDSA in my own engine is unclear to me.
>> Unfortunately, none of the example engines implement ECDSA so it is hard
>> for me to find answers.
>>
>> Invoking ENGINE_set_ECDSA() does not seem to be sufficient: my setup,
>> sign and verify methods never get invoked. Stepping through the openssl
>> code, it looks like I also need to register my own EVP_PKEY_EC method.
>> That looks pretty complicated and I do not understand why that is
>> required in the first place if I only want to replace the ECDSA signing
>> and verification methods.
>>
>> Can someone confirm that registering my own EVP_PKEY_EC method is indeed
>> the approach I have to take, or is there a shorter path to achieve my
>> goal?
>>
>
>  I did not find a way shorter then provide own EVP_PKEY_METHOD. But it
> works for me this way.
>
>  --
> SY, Dmitry Belyavsky
>
>
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-- 
SY, Dmitry Belyavsky
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