A Study on Reduction of the Number of Communications for Cascade Protocol

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  • Cascadeプロトコルの通信回数の削減
  • Cascade プロトコル ノ ツウシン カイスウ ノ サクゲン

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This paper proposes a modification scheme to reduce the number of public communications during the protocol for the interactive secret key reconciliation protocol ”Cascade”. The number of public communications would limit a key generation rate. In this modification, it is necessary to maintain the character of Cascade, which is the small amount of information exposed publicly as much as possible. The proposed protocol applies a binary search and block code together as error correction methods, taking the characters of the stages of passes which constitute the protocol into consideration. The amount of information exposed publicly and the number of public communications are given by computer simulation. The usefulness of the proposed protocol is demonstrated by comparing it with conventional schemes.

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