COPY_OCTET_PARAM
COPY_OCTET_PARAM(params, OSSL_PKEY_PARAM_EC_SEED, gctx->seed, gctx->seed_len);
COPY_OCTET_PARAM(params, OSSL_PKEY_PARAM_EC_GENERATOR, gctx->gen,
COPY_OCTET_PARAM(params, OSSL_PKEY_PARAM_DHKEM_IKM, gctx->dhkem_ikm,