EVP_MAC_get0_provider
return strcmp(OSSL_PROVIDER_get0_name(EVP_MAC_get0_provider(*a)),
OSSL_PROVIDER_get0_name(EVP_MAC_get0_provider(*b)));
OSSL_PROVIDER_get0_name(EVP_MAC_get0_provider(m)));
return mac->gettable_params(ossl_provider_ctx(EVP_MAC_get0_provider(mac)));
alg = ossl_provider_ctx(EVP_MAC_get0_provider(mac));
alg = ossl_provider_ctx(EVP_MAC_get0_provider(mac));
alg = ossl_provider_ctx(EVP_MAC_get0_provider(ctx->meth));
alg = ossl_provider_ctx(EVP_MAC_get0_provider(ctx->meth));
const OSSL_PROVIDER *EVP_MAC_get0_provider(const EVP_MAC *mac);