WO2008132870A1 - Encryption and decryption method and system, and program - Google Patents

Encryption and decryption method and system, and program Download PDF

Info

Publication number
WO2008132870A1
WO2008132870A1 PCT/JP2008/053594 JP2008053594W WO2008132870A1 WO 2008132870 A1 WO2008132870 A1 WO 2008132870A1 JP 2008053594 W JP2008053594 W JP 2008053594W WO 2008132870 A1 WO2008132870 A1 WO 2008132870A1
Authority
WO
WIPO (PCT)
Prior art keywords
encryption
program
decryption method
group
passwords
Prior art date
Application number
PCT/JP2008/053594
Other languages
French (fr)
Japanese (ja)
Inventor
Makoto Fujimaki
Masashi Kuwahara
Junji Tominaga
Original Assignee
National Institute Of Advanced Industrial Science And Technology
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
Priority claimed from JP2007158837A external-priority patent/JP2008287686A/en
Application filed by National Institute Of Advanced Industrial Science And Technology filed Critical National Institute Of Advanced Industrial Science And Technology
Publication of WO2008132870A1 publication Critical patent/WO2008132870A1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/602—Providing cryptographic facilities or services
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3226—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials using a predetermined code, e.g. password, passphrase or PIN

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Bioethics (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Storage Device Security (AREA)

Abstract

An encryption and decryption system sets at least two or more encryption passwords for one file and registers these encryption passwords in the system. At least one of these encryption passwords is used as a group ID for identifying a group. A plurality of groups of encryption passwords different for each group to which the user belongs are registered in the system. The user selects at least one of the plurality of groups of encryption passwords to encrypt a file.
PCT/JP2008/053594 2007-04-18 2008-02-29 Encryption and decryption method and system, and program WO2008132870A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007109855 2007-04-18
JP2007-109855 2007-04-18
JP2007158837A JP2008287686A (en) 2007-04-18 2007-06-15 Encryption and decryption method and system, and program
JP2007-158837 2007-06-15

Publications (1)

Publication Number Publication Date
WO2008132870A1 true WO2008132870A1 (en) 2008-11-06

Family

ID=39925338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/053594 WO2008132870A1 (en) 2007-04-18 2008-02-29 Encryption and decryption method and system, and program

Country Status (1)

Country Link
WO (1) WO2008132870A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102316214A (en) * 2011-07-26 2012-01-11 上海优思通信科技有限公司 Privacy method for personal information and system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651958A (en) * 1992-07-30 1994-02-25 Fuji Xerox Co Ltd Install media generator
JP2000099385A (en) * 1998-09-21 2000-04-07 Toshiba Corp Method and system for security for sharing file among plural users and storage medium for programming and recording the same method
JP2000207175A (en) * 1999-01-08 2000-07-28 Nec Corp Device and method for generation of installation program
JP2001016655A (en) * 1999-06-30 2001-01-19 Advanced Mobile Telecommunications Security Technology Research Lab Co Ltd Portable terminal with security
JP2003216037A (en) * 2001-11-16 2003-07-30 Yazaki Corp Cipher key, enciphering device, enciphering/deciphering device, cipher key management device, and deciphering device
JP2004072151A (en) * 2002-08-01 2004-03-04 Mitsubishi Electric Corp Terminal with file encryption function
JP2005209181A (en) * 2003-12-25 2005-08-04 Sorun Corp File management system and management method
JP2006155382A (en) * 2004-11-30 2006-06-15 Nomura Research Institute Ltd Password collation program and method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651958A (en) * 1992-07-30 1994-02-25 Fuji Xerox Co Ltd Install media generator
JP2000099385A (en) * 1998-09-21 2000-04-07 Toshiba Corp Method and system for security for sharing file among plural users and storage medium for programming and recording the same method
JP2000207175A (en) * 1999-01-08 2000-07-28 Nec Corp Device and method for generation of installation program
JP2001016655A (en) * 1999-06-30 2001-01-19 Advanced Mobile Telecommunications Security Technology Research Lab Co Ltd Portable terminal with security
JP2003216037A (en) * 2001-11-16 2003-07-30 Yazaki Corp Cipher key, enciphering device, enciphering/deciphering device, cipher key management device, and deciphering device
JP2004072151A (en) * 2002-08-01 2004-03-04 Mitsubishi Electric Corp Terminal with file encryption function
JP2005209181A (en) * 2003-12-25 2005-08-04 Sorun Corp File management system and management method
JP2006155382A (en) * 2004-11-30 2006-06-15 Nomura Research Institute Ltd Password collation program and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102316214A (en) * 2011-07-26 2012-01-11 上海优思通信科技有限公司 Privacy method for personal information and system

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