公开协商所提取的无条件安全秘密钥长度

Length of the unconditionally secure secret key distilled by public discussion

讨论了在公共信道上利用无条件安全秘密钥协商协议来公开协商提取秘密钥，并借助于ＵｎｉｖｅｒｓａｌＨａｓｈ函数和Ｒéｎｙｉ熵阐明了所提取的密钥长度与协议中的信息协商和保密增强的关系．

This paper discusses how to distill the secret key by public discussion using unconditionally secure secret key agreement protocols. The relation between the length of the distilled secret key and the information reconciliation & privacy amplification in the protocol is shown with the help of Universal Hash and Rényi entropy.