C++ (Cpp) Public_Key::key_length示例

示例#1

文件： tls_policy.cpp 项目： louiz/botan

void Policy::check_peer_key_acceptable(const Public_Key& public_key) const
   {
   const std::string algo_name = public_key.algo_name();

   const size_t keylength = public_key.key_length();
   size_t expected_keylength = 0;

   if(algo_name == "RSA")
      {
      expected_keylength = minimum_rsa_bits();
      }
   else if(algo_name == "DH")
      {
      expected_keylength = minimum_dh_group_size();
      }
   else if(algo_name == "DSA")
      {
      expected_keylength = minimum_dsa_group_size();
      }
   else if(algo_name == "ECDH" || algo_name == "Curve25519")
      {
      expected_keylength = minimum_ecdh_group_size();
      }
   else if(algo_name == "ECDSA")
      {
      expected_keylength = minimum_ecdsa_group_size();
      }
   // else some other algo, so leave expected_keylength as zero and the check is a no-op

   if(keylength < expected_keylength)
      throw TLS_Exception(Alert::INSUFFICIENT_SECURITY,
                          "Peer sent " + 
                           std::to_string(keylength) + " bit " + algo_name + " key"
                           ", policy requires at least " +
                           std::to_string(expected_keylength));
   }