DSA_PublicKey::DSA_PublicKey(const DSA_PublicKey& other)
    : p_(other.p_), q_(other.q_), g_(other.g_), y_(other.y_)
{}
DSA_PublicKey::DSA_PublicKey(const DSA_PublicKey& other)
    : p_(other.p_), q_(other.q_), g_(other.g_), y_(other.y_)
{}