不留记录即时通讯
不留记录即时通讯（Off-the-Record Messaging，縮寫為OTR）是一種安全協議，為即時通訊提供加密保護。OTR使用128bit長度的高级加密标准（AES）對稱密鑰加密保護，1536bits的迪菲－赫尔曼密钥交换（D-H）與SHA-1函數。在加密與驗證機制之外，OTR同時提供前向保密（Forward secrecy）功能。[1]
参考来源
- Borisov, Nikita; Goldberg, Ian; Brewer, Eric. . Proceedings of the 2004 ACM workshop on Privacy in the electronic society - WPES '04 (New York, New York, USA: ACM Press). 2004. doi:10.1145/1029179.1029200.
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