On 31/05/16 20:46, Chris Bare wrote:
> Is there a public interface to access the X and Y elements of an Ecc
> public key?
> I tried:
>
> EC_KEY *ecc;
>
> BN_num_bytes (ecc->pub_key->X);
>
> but get the compiler error:
>
> error: dereferencing pointer to incomplete type ?EC_KEY {aka struct
> ec_key_st}?
You can obtain the public key using EC_KEY_get0_public_key() and then
you can access the x and y co-ords using
EC_POINT_get_affine_coordinates_GFp() (or
EC_POINT_get_affine_coordinates_GF2m() if using a binary curve).
Matt
