xljx18335908301@outlook.com 's Blog

TextSecure Protocol  (别名)

 Open Whisper Systems

 WhatsApp,  Facebook Messenger, Skype .

The protocol combines the Double Ratchet algorithm, prekeys, and a triple Diffie–Hellman (3-DH) handshake,^[5] and uses Curve25519, AES-256, and HMAC-SHA256 as primitives.^[6]

Curve25519

^{https://github.com/signalapp/curve25519-java}

signal-metadata-java

https://github.com/signalapp/libsignal-metadata-java

signal-protocol-java （序列化）
https://github.com/signalapp/libsignal-protocol-java

signal-service-java (发送消息 http + webSockect)
https://github.com/signalapp/libsignal-service-java

^Reference

^{https://en.wikipedia.org/wiki/Signal_Protocol}

^{https://en.wikipedia.org/wiki/Double_Ratchet_Algorithm}