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Secret communication method and secret communication device thereof

外国特許コード F110004983
整理番号 BE06201WO
掲載日 2011年8月2日
出願国 英国
出願番号 0900546
公報番号 2453471
公報番号 2453471
出願日 平成19年6月20日(2007.6.20)
公報発行日 平成21年4月8日(2009.4.8)
公報発行日 平成24年3月28日(2012.3.28)
優先権データ
  • 特願2006-203984 (2006.7.26) JP
  • 特願2006-203985 (2006.7.26) JP
発明の名称 (英語) Secret communication method and secret communication device thereof
発明の概要(英語)

It is possible to provide a secret communication method and its communication device for performing secret communication by using a small amount of communication paths as a whole while evading an overlapped public communication. The secret communication method includes: a step for estimating an error ratio of the initial random numbers X, Y

a step for estimating the upper limit of a wiretap information amount

a step for deciding an encryption function decided from an error correction code based on the error probability estimation value, an error correction decoding function g, and an encryption/decryption auxiliary variable

a step for uniquely deciding a confidentiality increase matrix C according to the encoding ratio of the estimation value of the upper limit value of the wiretap information amount and the encoding ratio of error correction code

a step for uniquely generating an encrypted document Z from information M to be sent to a receiver by using an encryption function, an initial random number X, and a confidentiality increase matrix C

a step for sending the encrypted text Z

and a step for decrypting the encrypted text Z into a transmitted document MB by using an initial random number Y, the confidentiality increase matrix C, the encryption/decryption auxiliary variable, and the error correction decoding function g.

  • 出願人(英語)
  • JAPAN SCIENCE AND TECHNOLOGY CORPORATION
  • 発明者(英語)
  • MASAHITO HAYASHI
国際特許分類(IPC)
参考情報 (研究プロジェクト等) ERATO/SORST Quantum Computation and Inforamtion AREA
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