static TANG_MSG *
rec(int sock, EC_KEY *key, const char *file, int line)
{
TANG_MSG_REC_REQ *req = NULL;
const EC_GROUP *grp = NULL;
TANG_MSG *rep = NULL;
test(grp = EC_KEY_get0_group(key));
test(req = TANG_MSG_REC_REQ_new());
test(conv_eckey2gkey(key, TANG_KEY_USE_REC, req->key, NULL) == 0);
test(conv_point2os(grp, EC_GROUP_get0_generator(grp), req->x, NULL) == 0);
test(rep = request(sock, &(TANG_MSG) {
.type = TANG_MSG_TYPE_REC_REQ,
.val.rec.req = req
}, file, line));
int
conv_eckey2gkey(EC_KEY *key, TANG_KEY_USE use, TANG_KEY *gkey, BN_CTX *ctx)
{
const EC_GROUP *grp = EC_KEY_get0_group(key);
int r;
if (!grp)
return EINVAL;
ASN1_OBJECT_free(gkey->grp);
gkey->grp = OBJ_nid2obj(EC_GROUP_get_curve_name(grp));
if (!gkey->grp)
return ENOMEM;
r = conv_point2os(grp, EC_KEY_get0_public_key(key), gkey->key, ctx);
if (r != 0)
return ENOMEM;
if (ASN1_ENUMERATED_set(gkey->use, use) <= 0)
return ENOMEM;
return 0;
}