EC_POINT_get_affine_coordinates replacement in 3.0

[Chris Bare]

On Tue, May 3, 2022 at 3:10 PM William Roberts <bill.c.roberts at gmail.com>
wrote:

> On Tue, May 3, 2022 at 1:14 PM Chris Bare <chris.bare at gmail.com> wrote:
> >
> > I'm converting some openssl 1.0 code to 3.0 and I don't know how to get
> the coordinates
> > in a 3.0 way.
> > The old code is:
> > BN_CTX *ctx = BN_CTX_new ();
> > BIGNUM *X = NULL, *Y = NULL;
> > const EC_POINT *pubkey;
> > const EC_GROUP *group;
> > BN_CTX_start (ctx);
> > X = BN_CTX_get (ctx);
> > Y = BN_CTX_get (ctx);
> > pubkey = EC_KEY_get0_public_key ((EC_KEY *) EVP_PKEY_get0 (pkey));
> > group = EC_KEY_get0_group ((EC_KEY *) EVP_PKEY_get0 (cvr->sm_pkey));
> > EC_POINT_get_affine_coordinates_GFp (group, pubkey, X, Y, ctx)
> >
> > What would be the 3.0 way to get X and Y without using deprecated
> functions?
>
> For EC_POINT_get_affine_coordinates_GFp it goes to
> EC_POINT_get_affine_coordinates, see:
>   -
> https://www.openssl.org/docs/man3.0/man3/EC_POINT_get_affine_coordinates.html
>
> Offhand I don't see any other deprecated functions, was that the only one?
>
> Thanks,
> Bill
>

all the EC_KEY_get0_ functions are deprecated. Is there a new way to access
the internals of
the opaque structures, or am I stuck with the deprecated ones for this?

-- 
Chris Bare
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mta.openssl.org/pipermail/openssl-users/attachments/20220503/a5157e26/attachment.htm>