-struct GSC_KeyExchangeInfo
-{
- /**
- * Identity of the peer.
- */
- struct GNUNET_PeerIdentity peer;
-
- /**
- * SetKeyMessage to transmit (initialized the first
- * time our status goes past 'KX_STATE_KEY_SENT').
- */
- struct SetKeyMessage skm;
-
- /**
- * PING message we transmit to the other peer.
- */
- struct PingMessage ping;
-
- /**
- * SetKeyMessage we received and did not process yet.
- */
- struct SetKeyMessage *skm_received;
-
- /**
- * PING message we received from the other peer and
- * did not process yet (or NULL).
- */
- struct PingMessage *ping_received;
-
- /**
- * PONG message we received from the other peer and
- * did not process yet (or NULL).
- */
- struct PongMessage *pong_received;
-
- /**
- * Non-NULL if we are currently looking up HELLOs for this peer.
- * for this peer.
- */
- struct GNUNET_PEERINFO_IteratorContext *pitr;
-
- /**
- * Public key of the neighbour, NULL if we don't have it yet.
- */
- struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *public_key;
-
- /**
- * We received a PONG message before we got the "public_key"
- * (or the SET_KEY). We keep it here until we have a key
- * to decrypt it. NULL if no PONG is pending.
- */
- struct PongMessage *pending_pong;
-
- /**
- * Key we use to encrypt our messages for the other peer
- * (initialized by us when we do the handshake).
- */
- struct GNUNET_CRYPTO_AesSessionKey encrypt_key;
-
- /**
- * Key we use to decrypt messages from the other peer
- * (given to us by the other peer during the handshake).
- */
- struct GNUNET_CRYPTO_AesSessionKey decrypt_key;
-
- /**
- * At what time did we generate our encryption key?
- */
- struct GNUNET_TIME_Absolute encrypt_key_created;
-
- /**
- * At what time did the other peer generate the decryption key?
- */
- struct GNUNET_TIME_Absolute decrypt_key_created;
-
- /**
- * When should the session time out (if there are no PONGs)?
- */
- struct GNUNET_TIME_Absolute timeout;
-
- /**
- * At what frequency are we currently re-trying SET_KEY messages?
- */
- struct GNUNET_TIME_Relative set_key_retry_frequency;
-
- /**
- * ID of task used for re-trying SET_KEY and PING message.
- */
- GNUNET_SCHEDULER_TaskIdentifier retry_set_key_task;
-
- /**
- * ID of task used for sending keep-alive pings.
- */
- GNUNET_SCHEDULER_TaskIdentifier keep_alive_task;
-
- /**
- * What was our PING challenge number (for this peer)?
- */
- uint32_t ping_challenge;
-
- /**
- * What is our connection status?
- */
- enum KxStateMachine status;
-
-};
-
-
-/**
- * We received a SET_KEY message. Validate and update
- * our key material and status.
- *
- * @param kx key exchange status for the corresponding peer
- * @param msg the set key message we received
- */
-void
-GSC_KX_handle_set_key (struct GSC_KeyExchangeInfo *kx,
- const struct GNUNET_MessageHandler *msg);
-
-
-/**
- * We received a PING message. Validate and transmit
- * a PONG message.
- *
- * @param kx key exchange status for the corresponding peer
- * @param msg the encrypted PING message itself
- */
-void
-GSC_KX_handle_ping (struct GSC_KeyExchangeInfo *kx,
- const struct GNUNET_MessageHeader *msg);
-
-
-/**
- * We received a PONG message. Validate and update our status.
- *
- * @param kx key exchange status for the corresponding peer
- * @param msg the encrypted PONG message itself
- */
-void
-GSC_KX_handle_pong (struct GSC_KeyExchangeInfo *kx,
- const struct GNUNET_MessageHeader *msg);