privy is a simple tool for secured p2p chat which leveraged gcrypt for encryption.
privy-daemon is a server which needs to be running for messages to be sent or recieved. Ideally this process is always running to maximize the chances of receiving an incoming message.
A message in the send-queue is kept there until successfully received by the other peer. Successful reception of a message requires the following:
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Sending party encrypts the message and randomly generated keyphrase using the public key of the receiving party
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Receiving party decrypts the message body and keyphrase.
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Receiving party hashes the message body and sends it back to the sender.
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Sender checks that hash matches expectation, if so the send is a success.
privy is a simple tool to send, recieve, and check the status of the privy-daemon