ossl_ffc_set_digest
ossl_ffc_set_digest(&ret->params, EVP_MD_get0_name(dctx->md), NULL);
ossl_ffc_set_digest(&dsa->params, EVP_MD_get0_name(dctx->md), NULL);
ossl_ffc_set_digest(ffc, prm->data, props);
void ossl_ffc_set_digest(FFC_PARAMS *params, const char *alg, const char *props);
ossl_ffc_set_digest(ffc, gctx->mdname, gctx->mdprops);
ossl_ffc_set_digest(ffc, gctx->mdname, gctx->mdprops);
ossl_ffc_set_digest(¶ms, "SHA256", NULL);
ossl_ffc_set_digest(¶ms, "SHA224", NULL);
ossl_ffc_set_digest(¶ms, "SHA512", NULL);