A new quantum key distribution protocol that differs from the BB84 protocol is analysised.
讨论了一个不同于BB 84协议的量子密匙传输协议的安全性。
In order to decrease the storage cost of group key distribution protocol, a secure group key distribute protocol based on the status key tree is proposed.
为了减少群组密钥分发协议的存储代价，提出了一种基于状态密钥树的群组密钥分发协议。
This paper analyzes authentication and key distribution protocol of the procedure and security of UMTS. The vulnerability and possible attack to this protocol are described.
详细分析了UMTS认证和密钥分配协议的过程以及协议的安全性，找出协议中存在的弱点和可能的攻击，提出了公钥加密协议的改进方法。
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