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ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION PROGRAM, DECRYPTION PROGRAM, AND RECORDING MEDIUM

外国特許コード F110002370
掲載日 2011年1月13日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2008JP055132
国際公開番号 WO 2008/114829
国際出願日 平成20年3月19日(2008.3.19)
国際公開日 平成20年9月25日(2008.9.25)
優先権データ
  • 特願2007-071432 (2007.3.19) JP
発明の名称 (英語) ENCRYPTION DEVICE, DECRYPTION DEVICE, ENCRYPTION PROGRAM, DECRYPTION PROGRAM, AND RECORDING MEDIUM
発明の概要(英語) An encryption device includes: an input unit (20) which inputs a plain text x; a first pseudo-random number generation unit (30) which generates a secret key K and a header r as pseudo-random number sequences, respectively; a second pseudo-random number generation unit (40) which generates a pseudo-random number sequence rx having the header r as the initial value; a conversion processing unit (50) which converts a set (r, cx) formed by cx as the result of the exclusive-OR operation between the plain text x and the pseudo-random number sequence rx and the header r, by using S-BOX; a rearrangement processing unit (60) which divides unified data dx into n blocks bi (i = 0, ..., n-1) and rearranges the n blocks bi(i = 0, ..., n-1) by using the secret key K so as to generate an encrypted text fcx; and an output unit (70) which outputs the encrypted text fcx.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOKYO DENKI UNIVERSITY
  • 発明者(英語)
  • SUZUKI, Shuichi
国際特許分類(IPC)
指定国 AE(UTILITY MODEL),AG,AL(UTILITY MODEL),AM(PROVISIONAL PATENT)(UTILITY MODEL),AO,AT(UTILITY MODEL),AU,AZ(UTILITY MODEL),BA,BB,BG(UTILITY MODEL),BH,BR(UTILITY MODEL),BW(UTILITY MODEL),BY(UTILITY MODEL),BZ(UTILITY MODEL),CA,CH,CN(UTILITY MODEL),CO(UTILITY MODEL),CR(UTILITY MODEL),CU(INVENTOR'S CERTIFICATE),CZ(UTILITY MODEL),DE(UTILITY MODEL),DK(UTILITY MODEL),DM(UTILITY MODEL),DO(UTILITY MODEL),DZ,EC(UTILITY MODEL),EE(UTILITY MODEL),EG(UTILITY MODEL),ES(UTILITY MODEL),FI(UTILITY MODEL),GB,GD,GE(UTILITY MODEL),GH,GM,GT,HN,HR(CONSENSUAL PATENT),HU(UTILITY MODEL),ID,IL,IN,IS,JP(UTILITY MODEL),KE(UTILITY MODEL),KG(UTILITY MODEL),KM,KN,KP(INVENTOR'S CERTIFICATE)(UTILITY MODEL),KR(UTILITY MODEL),KZ(PROVISIONAL PATENT)(UTILITY MODEL),LA,LC,LK,LR,LS(UTILITY MODEL),LT,LU,LY,MA,MD(UTILITY MODEL),ME(PETTY PATENT),MG,MK,MN,MW,MX(UTILITY MODEL),MY(UTILITY-INNOVATION),MZ(UTILITY MODEL),NA,NG,NI(UTILITY MODEL),NO,NZ,OM,PG,PH(UTILITY MODEL),PL(UTILITY MODEL),PT(UTILITY MODEL),RO,RS(PETTY PATENT),RU(UTILITY MODEL),SC,SD,SE,SG,SK(UTILITY MODEL),SL(UTILITY MODEL),SM,SV(UTILITY MODEL),SY,TJ(UTILITY MODEL),TM(PROVISIONAL PATENT),TN,TR(UTILITY MODEL),TT(UTILITY CERTIFICATE),TZ,UA(UTILITY MODEL),UG(UTILITY CERTIFICATE),US,UZ(UTILITY MODEL),VC(UTILITY CERTIFICATE),VN,ZA,ZM,ZW,EP(AT,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GB,GR,HR,HU,IE,IS,IT,LT,LU,LV,MC,MT,NL,NO,PL,PT,RO,SE,SI,SK,TR),OA(BF(UTILITY MODEL),BJ(UTILITY MODEL),CF(UTILITY MODEL),CG(UTILITY MODEL),CI(UTILITY MODEL),CM(UTILITY MODEL),GA(UTILITY MODEL),GN(UTILITY MODEL),GQ(UTILITY MODEL),GW(UTILITY MODEL),ML(UTILITY MODEL),MR(UTILITY MODEL),NE(UTILITY MODEL),SN(UTILITY MODEL),TD(UTILITY MODEL),TG(UTILITY MODEL)),AP(BW,GH,GM,KE,LS,MW,MZ,NA,SD,SL,SZ,TZ,UG,ZM,ZW),EA(AM,AZ,BY,KG,KZ,MD,RU,TJ,TM)
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