基本信息:
- 专利标题： 加密数据运算系统、装置以及程序
- 专利标题（英）：Encrypted data computation system, device, and program
- 申请号：CN201480010808.6 申请日：2014-02-28
- 公开(公告)号：CN105027181A 公开(公告)日：2015-11-04
- 发明人： 小池正修 , 林良太郎 , 松下达之
- 申请人： 株式会社东芝 , 东芝解决方案株式会社
- 申请人地址： 日本东京都
- 专利权人： 株式会社东芝,东芝解决方案株式会社
- 当前专利权人： 株式会社东芝,东芝解决方案株式会社
- 当前专利权人地址： 日本东京都
- 代理机构： 永新专利商标代理有限公司
- 代理人： 杨谦; 胡建新
- 优先权： 2013-051001 2013.03.13 JP
- 国际申请： PCT/JP2014/055139 2014.02.28
- 国际公布： WO2014/141907 JA 2014.09.18
- 进入国家日期： 2015-08-27
- 主分类号： G09C1/00
- IPC分类号： G09C1/00
A key generation device according to an embodiment of the present invention generates an encryption key for encrypting a plurality of numerical values, and a secondary computation key and tertiary computation key which constitute decryption keys corresponding to the encryption key. An encryption device encrypts the numerical values on the basis of the encryption key and generates a plurality of encrypted data. A computation device generates primary computation results corresponding to data in which computation results of an equation adding to and subtracting from the numerical values are encrypted, on the basis of the encrypted data. A computation assistance device generates secondary computation results obtained by randomizing the primary computation results on the basis of the primary computation results, the secondary computation key, and a random number. The computation device generates tertiary computation results on the basis of the secondary computation results and the tertiary computation key, and determines the size relationship between minuends and subtrahends in the expression on the basis of the tertiary computation results.
公开/授权文献:
- CN105027181B 加密数据运算系统以及装置 公开/授权日：2017-03-29