WO2008081516A1 - ストリーム暗号方法および暗号システム - Google Patents

ストリーム暗号方法および暗号システム Download PDF

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Publication number
WO2008081516A1
WO2008081516A1 PCT/JP2006/326109 JP2006326109W WO2008081516A1 WO 2008081516 A1 WO2008081516 A1 WO 2008081516A1 JP 2006326109 W JP2006326109 W JP 2006326109W WO 2008081516 A1 WO2008081516 A1 WO 2008081516A1
Authority
WO
WIPO (PCT)
Prior art keywords
encryption
bit
pseudo
stream
random number
Prior art date
Application number
PCT/JP2006/326109
Other languages
English (en)
French (fr)
Inventor
Motomu Takatsu
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to JP2008551978A priority Critical patent/JP4860708B2/ja
Priority to PCT/JP2006/326109 priority patent/WO2008081516A1/ja
Publication of WO2008081516A1 publication Critical patent/WO2008081516A1/ja
Priority to US12/492,841 priority patent/US8280044B2/en

Links

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
    • 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
    • H04L9/002—Countermeasures against attacks on cryptographic mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Storage Device Security (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

　ストリーム暗号方法は、Ｎ個の１ビット入力信号系列の平文をＮ個の擬似乱数系列を用いてＬ（Ｌは、Ｎ以上）ビットの暗号文に符号化し、且つ、該暗号化に用いた１つの擬似乱数系列のみを使用して対応する１つの平文を復号化する。このストリーム暗号方法は、前記Ｎ個の擬似乱数系列を使用してＬビットの暗号シンボル集合を平均的に２等分し、対応する１ビットの平文系列により２分された部分集合いずれかを選択し、選択されたＮ個の部分集合の共通部分となる集合の要素が１つ以上あるときは、そのうちの１つを暗号シンボルとする。
PCT/JP2006/326109 2006-12-27 2006-12-27 ストリーム暗号方法および暗号システム WO2008081516A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008551978A JP4860708B2 (ja) 2006-12-27 2006-12-27 ストリーム暗号方法および暗号システム
PCT/JP2006/326109 WO2008081516A1 (ja) 2006-12-27 2006-12-27 ストリーム暗号方法および暗号システム
US12/492,841 US8280044B2 (en) 2006-12-27 2009-06-26 Stream encryption method and encryption system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/326109 WO2008081516A1 (ja) 2006-12-27 2006-12-27 ストリーム暗号方法および暗号システム

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/492,841 Continuation US8280044B2 (en) 2006-12-27 2009-06-26 Stream encryption method and encryption system

Publications (1)

Publication Number Publication Date
WO2008081516A1 true WO2008081516A1 (ja) 2008-07-10

Family

ID=39588207

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/326109 WO2008081516A1 (ja) 2006-12-27 2006-12-27 ストリーム暗号方法および暗号システム

Country Status (3)

Country Link
US (1) US8280044B2 (ja)
JP (1) JP4860708B2 (ja)
WO (1) WO2008081516A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011223577A (ja) * 2010-04-08 2011-11-04 Nagravision Sa 暗号機能を実行するための装置及び方法
CN110048764A (zh) * 2013-09-09 2019-07-23 意大利广播电视股份公司 传输卫星信号的方法和系统及其接收器

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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JP5397254B2 (ja) * 2010-02-12 2014-01-22 富士ゼロックス株式会社 擬似ランダム信号発生装置、通信システム、及び画像形成システム
WO2013114166A1 (en) * 2012-02-01 2013-08-08 Nds Limited Known plaintext attack protection
JP2019205067A (ja) * 2018-05-23 2019-11-28 日本電信電話株式会社 信号処理装置及び信号処理方法
US11228432B2 (en) * 2019-03-04 2022-01-18 Siavash Bayat-Sarmadi Quantum-resistant cryptoprocessing
JP6925645B2 (ja) * 2019-04-04 2021-08-25 学校法人玉川学園 信号処理システム
US11128993B2 (en) * 2019-06-25 2021-09-21 International Business Machines Corporation Mitigation of electromagnetic interference in electronic communication
CN115795520B (zh) * 2023-02-07 2023-04-21 济南霍兹信息科技有限公司 一种用于计算机系统的数据管理方法

Citations (2)

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Publication number Priority date Publication date Assignee Title
JPS6032453A (ja) * 1983-08-03 1985-02-19 Nec Corp 時分割多重化通信装置の簡易秘話回路
JP2006080720A (ja) * 2004-09-08 2006-03-23 Tamagawa Gakuen 暗号送信装置

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JPH04317229A (ja) * 1991-04-17 1992-11-09 Mitsubishi Electric Corp スクランブル方式
US6307940B1 (en) * 1997-06-25 2001-10-23 Canon Kabushiki Kaisha Communication network for encrypting/deciphering communication text while updating encryption key, a communication terminal thereof, and a communication method thereof
JP3517663B2 (ja) * 1998-07-27 2004-04-12 村田機械株式会社 暗号通信方法及び暗号通信システム
DE69939254D1 (de) * 1999-06-22 2008-09-18 Hitachi Ltd Kryptografisches Gerät und Verfahren
US7190787B1 (en) * 1999-11-30 2007-03-13 Intel Corporation Stream cipher having a combiner function with storage based shuffle unit
US6804355B1 (en) * 2000-01-06 2004-10-12 Intel Corporation Block cipher for small selectable block sizes
US7133407B2 (en) * 2000-01-25 2006-11-07 Fujitsu Limited Data communications system
JP2002328845A (ja) * 2001-05-07 2002-11-15 Fujitsu Ltd 半導体集積回路及びｉｃカードのセキュリティー保護方法
JP3577717B2 (ja) * 2001-05-18 2004-10-13 日本電気株式会社 通信装置、スクランブラ回路とデスクランブラ回路、そのスクランブル方法とデスクランブル方法
JP3851115B2 (ja) * 2001-06-28 2006-11-29 富士通株式会社 暗号回路
US7113597B2 (en) * 2002-10-24 2006-09-26 Hewlett-Packard Development Company,Lp. System and method for protection of video signals
JP2004363739A (ja) * 2003-06-03 2004-12-24 Hitachi Ltd 改竄検知可能な、共通鍵暗号の暗号化装置または復号化装置
US7406174B2 (en) * 2003-10-21 2008-07-29 Widevine Technologies, Inc. System and method for n-dimensional encryption
KR20060042791A (ko) * 2004-11-10 2006-05-15 한국전자통신연구원 키 스트림 생성 방법 및 장치
JP2006253745A (ja) * 2005-03-08 2006-09-21 N-Crypt Inc データ処理装置、データ処理システム、及びデータ処理方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032453A (ja) * 1983-08-03 1985-02-19 Nec Corp 時分割多重化通信装置の簡易秘話回路
JP2006080720A (ja) * 2004-09-08 2006-03-23 Tamagawa Gakuen 暗号送信装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011223577A (ja) * 2010-04-08 2011-11-04 Nagravision Sa 暗号機能を実行するための装置及び方法
CN110048764A (zh) * 2013-09-09 2019-07-23 意大利广播电视股份公司 传输卫星信号的方法和系统及其接收器
CN110048764B (zh) * 2013-09-09 2021-10-08 意大利广播电视股份公司 传输卫星信号的方法和系统及其接收器

Also Published As

Publication number Publication date
JPWO2008081516A1 (ja) 2010-04-30
JP4860708B2 (ja) 2012-01-25
US20100008497A1 (en) 2010-01-14
US8280044B2 (en) 2012-10-02

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