C++ (Cpp) ssh_client_ecdh_init示例

示例#1

文件： client.c 项目： kedazo/libssh

/** @internal
 * @brief launches the DH handshake state machine
 * @param session session handle
 * @returns SSH_OK or SSH_ERROR
 * @warning this function returning is no proof that DH handshake is
 * completed
 */
static int dh_handshake(ssh_session session) {

  int rc = SSH_AGAIN;
  enum ssh_dh_state_e next_state = DH_STATE_INIT_SENT;

  switch (session->dh_handshake_state) {
    case DH_STATE_INIT:
      switch(session->next_crypto->kex_type){
        case SSH_KEX_DH_GROUP1_SHA1:
        case SSH_KEX_DH_GROUP14_SHA1:
          rc = ssh_client_dh_init(session);
          break;
        case SSH_KEX_DH_GROUPEX_SHA1:
        case SSH_KEX_DH_GROUPEX_SHA256:
          next_state = DH_STATE_GEX_REQUEST_SENT;
          rc = ssh_client_dh_gex_init(session);
          break;
#ifdef HAVE_ECDH
        case SSH_KEX_ECDH_SHA2_NISTP256:
          rc = ssh_client_ecdh_init(session);
          break;
#endif
#ifdef HAVE_CURVE25519
        case SSH_KEX_CURVE25519_SHA256_LIBSSH_ORG:
          rc = ssh_client_curve25519_init(session);
          break;
#endif
        default:
          rc = SSH_ERROR;
      }

      if (rc == SSH_ERROR) {
          return SSH_ERROR;
      }

      session->dh_handshake_state = next_state;
      break;
    case DH_STATE_INIT_SENT:
    	/* wait until ssh_packet_dh_reply is called */
    	break;
    case DH_STATE_GEX_REQUEST_SENT:
    	/* wait until ssh_packet_dh_reply is called */
    	break;
    case DH_STATE_NEWKEYS_SENT:
    	/* wait until ssh_packet_newkeys is called */
    	break;
    case DH_STATE_FINISHED:
      return SSH_OK;
    default:
      ssh_set_error(session, SSH_FATAL, "Invalid state in dh_handshake(): %d",
          session->dh_handshake_state);

      return SSH_ERROR;
  }

  return rc;
}

示例#2

文件： client.c 项目： MarvinZhuang/tmate

/** @internal
 * @brief launches the DH handshake state machine
 * @param session session handle
 * @returns SSH_OK or SSH_ERROR
 * @warning this function returning is no proof that DH handshake is
 * completed
 */
static int dh_handshake(ssh_session session) {

  int rc = SSH_AGAIN;

  enter_function();

  switch (session->dh_handshake_state) {
    case DH_STATE_INIT:
      switch(session->next_crypto->kex_type){
        case SSH_KEX_DH_GROUP1_SHA1:
        case SSH_KEX_DH_GROUP14_SHA1:
          rc = ssh_client_dh_init(session);
          break;
#ifdef HAVE_ECDH
        case SSH_KEX_ECDH_SHA2_NISTP256:
          rc = ssh_client_ecdh_init(session);
          break;
#endif
        default:
          rc=SSH_ERROR;
          goto error;
      }

      if (rc == SSH_ERROR) {
        goto error;
      }

      session->dh_handshake_state = DH_STATE_INIT_SENT;
    case DH_STATE_INIT_SENT:
    	/* wait until ssh_packet_dh_reply is called */
    	break;
    case DH_STATE_NEWKEYS_SENT:
    	/* wait until ssh_packet_newkeys is called */
    	break;
    case DH_STATE_FINISHED:
    	leave_function();
      return SSH_OK;
    default:
      ssh_set_error(session, SSH_FATAL, "Invalid state in dh_handshake(): %d",
          session->dh_handshake_state);
      leave_function();
      return SSH_ERROR;
  }
error:
  leave_function();
  return rc;
}