supported_hashes(void)
{
    /* TODO: check if jose has a way to export the hash algorithms it
     * supports. */
    static const char* hashes[] = {"S1", "S224", "S256", "S384", "S512", NULL};
    return hashes;
}
supported_hashes(void)
{
     
    static const char* hashes[] = {"S1", "S224", "S256", "S384", "S512", NULL};
    return hashes;
}