WO2008114829A1 - Encryption device, decryption device, encryption program, decryption program, and recording medium - Google Patents

Encryption device, decryption device, encryption program, decryption program, and recording medium Download PDF

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Publication number
WO2008114829A1
WO2008114829A1 PCT/JP2008/055132 JP2008055132W WO2008114829A1 WO 2008114829 A1 WO2008114829 A1 WO 2008114829A1 JP 2008055132 W JP2008055132 W JP 2008055132W WO 2008114829 A1 WO2008114829 A1 WO 2008114829A1
Authority
WO
WIPO (PCT)
Prior art keywords
pseudo
program
random number
encryption
decryption
Prior art date
Application number
PCT/JP2008/055132
Other languages
French (fr)
Japanese (ja)
Inventor
Shuichi Suzuki
Original Assignee
Tokyo Denki University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Denki University filed Critical Tokyo Denki University
Priority to JP2009505246A priority Critical patent/JP4737334B2/en
Publication of WO2008114829A1 publication Critical patent/WO2008114829A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
    • H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
    • H04L9/0656—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher
    • H04L9/0662—Pseudorandom key sequence combined element-for-element with data sequence, e.g. one-time-pad [OTP] or Vernam's cipher with particular pseudorandom sequence generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)

Abstract

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.
PCT/JP2008/055132 2007-03-19 2008-03-19 Encryption device, decryption device, encryption program, decryption program, and recording medium WO2008114829A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009505246A JP4737334B2 (en) 2007-03-19 2008-03-19 Encryption device, decryption device, encryption program, decryption program, and recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-071432 2007-03-19
JP2007071432 2007-03-19

Publications (1)

Publication Number Publication Date
WO2008114829A1 true WO2008114829A1 (en) 2008-09-25

Family

ID=39765933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055132 WO2008114829A1 (en) 2007-03-19 2008-03-19 Encryption device, decryption device, encryption program, decryption program, and recording medium

Country Status (2)

Country Link
JP (1) JP4737334B2 (en)
WO (1) WO2008114829A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011109510A (en) * 2009-11-19 2011-06-02 Tokyo Denki Univ Originality assurance device, originality assurance program, and recording medium for recording the same
JP2011145464A (en) * 2010-01-14 2011-07-28 Nihon Univ Device and program for generation of pseudo-random number
KR101194403B1 (en) 2010-12-06 2012-10-25 삼성에스디에스 주식회사 Apparatus of generating cryptographically secure pseudo random number and method thereof
JP2014063292A (en) * 2012-09-20 2014-04-10 Toshiba Corp Ic card, portable electronic device, and ic card reader/writer
JP2015069192A (en) * 2013-10-01 2015-04-13 富士電機株式会社 Information processing device, and encryption method
WO2015166701A1 (en) * 2014-04-28 2015-11-05 一郎 加沢 Encryption method, program, and system
CN112818367A (en) * 2021-02-03 2021-05-18 中国邮政储蓄银行股份有限公司 File encryption method and device, storage medium and processor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017129779A (en) * 2016-01-21 2017-07-27 学校法人東京電機大学 Cipher generation device, data transmission system, cipher generation method, and data transmission method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281145A (en) * 1985-10-04 1987-04-14 Hitachi Ltd Data ciphering system
JP2006191626A (en) * 2005-01-06 2006-07-20 Toshiba Corp System and method for secure communication of electronic document

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62237834A (en) * 1986-04-09 1987-10-17 Hitachi Ltd Data ciphering device
JPH10173646A (en) * 1996-12-13 1998-06-26 Mitsubishi Electric Corp Ciphering assisting method, decoding assisting method and device using them
JP4714124B2 (en) * 2006-11-14 2011-06-29 東芝情報システム株式会社 Transmitting apparatus, receiving apparatus, information communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281145A (en) * 1985-10-04 1987-04-14 Hitachi Ltd Data ciphering system
JP2006191626A (en) * 2005-01-06 2006-07-20 Toshiba Corp System and method for secure communication of electronic document

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011109510A (en) * 2009-11-19 2011-06-02 Tokyo Denki Univ Originality assurance device, originality assurance program, and recording medium for recording the same
JP2011145464A (en) * 2010-01-14 2011-07-28 Nihon Univ Device and program for generation of pseudo-random number
KR101194403B1 (en) 2010-12-06 2012-10-25 삼성에스디에스 주식회사 Apparatus of generating cryptographically secure pseudo random number and method thereof
JP2014063292A (en) * 2012-09-20 2014-04-10 Toshiba Corp Ic card, portable electronic device, and ic card reader/writer
JP2015069192A (en) * 2013-10-01 2015-04-13 富士電機株式会社 Information processing device, and encryption method
WO2015166701A1 (en) * 2014-04-28 2015-11-05 一郎 加沢 Encryption method, program, and system
JP5992651B2 (en) * 2014-04-28 2016-09-14 一郎 加沢 ENCRYPTION METHOD, PROGRAM, AND SYSTEM
CN106165340A (en) * 2014-04-28 2016-11-23 加泽郎 encryption method, program and system
EP3131230A4 (en) * 2014-04-28 2017-12-13 Ichiro Kazawa Encryption method, program, and system
CN106165340B (en) * 2014-04-28 2020-06-16 加泽一郎 Encryption method, program, and system
CN112818367A (en) * 2021-02-03 2021-05-18 中国邮政储蓄银行股份有限公司 File encryption method and device, storage medium and processor
CN112818367B (en) * 2021-02-03 2024-03-26 中国邮政储蓄银行股份有限公司 File encryption method, device, storage medium and processor

Also Published As

Publication number Publication date
JPWO2008114829A1 (en) 2010-07-08
JP4737334B2 (en) 2011-07-27

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