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介绍了保密增强的概念,并研究了它在无条件安全的密钥协商中的应用。最后,以Renyi熵为测度,定量地分析了保密增强所能提取出的秘密钥长度与窃听者所掌握的信息间的关系。
The concept of privacy enhancement is introduced and its application in the keyless negotiation of unconditional security is studied. Finally, using Renyi entropy as a measure, we quantitatively analyze the relationship between the secret key length extracted by the secret enhancement and the eavesdropper’s information.