EVP_PKEY_get_int_param is not getting degree from EC key

[Tomas Mraz]

On Tue, 2022-01-04 at 14:17 +0000, Blumenthal, Uri - 0553 - MITLL
wrote:
> Now I became interested. ;-)
> 
> Theoretically, shouldn’t
> 
> EVP_PKEY_get_int_param(pkey, OSSL_PARAM_EC_ORDER, &(unsigned
> int)order)
> 
> work? I verified that it does not seem to work, at least in the
> obvious context. 

OSSL_PARAM_EC_ORDER is an unsigned integer (also a bignum) and it won't
fit into int. So that's the reason why that call fails.

Also the order is not a degree (maximum number of bits of a curve
coordinate).

-- 
Tomáš Mráz, OpenSSL