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WO2008034971A3 - Method for encrypting messages for at least two receivers and related encryption device and decryption device - Google Patents

Method for encrypting messages for at least two receivers and related encryption device and decryption device Download PDF

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Publication number
WO2008034971A3
WO2008034971A3 PCT/FR2007/001510 FR2007001510W WO2008034971A3 WO 2008034971 A3 WO2008034971 A3 WO 2008034971A3 FR 2007001510 W FR2007001510 W FR 2007001510W WO 2008034971 A3 WO2008034971 A3 WO 2008034971A3
Authority
WO
WIPO (PCT)
Prior art keywords
receivers
decryption
encryption
partial
encrypting messages
Prior art date
Application number
PCT/FR2007/001510
Other languages
French (fr)
Other versions
WO2008034971A2 (en
Inventor
Abdelkader Nimour
Original Assignee
Abdelkader Nimour
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 Abdelkader Nimour filed Critical Abdelkader Nimour
Publication of WO2008034971A2 publication Critical patent/WO2008034971A2/en
Publication of WO2008034971A3 publication Critical patent/WO2008034971A3/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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/085—Secret sharing or secret splitting, e.g. threshold schemes

Landscapes

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

Abstract

The present invention pertains to the field of cryptography, and relates to an encryption device that comprises an initialisation step (101), an encryption step (102), and an decryption step (103); the device allows a transmitter provided with secret encryption data Ke unknown to receivers, to encrypt messages for at least two receivers each comprising decryption data Fdi made of partial secrets selected so that a partial secret composition function can be used for obtaining the transmitter encryption data Ke from said partial secrets, said partial secret composition function being unknown to the receivers. The invention also relates to an encryption device and to a decryption device for encrypting and decrypting messages according to the method of the present invention.
PCT/FR2007/001510 2006-09-19 2007-09-18 Method for encrypting messages for at least two receivers and related encryption device and decryption device WO2008034971A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0608163 2006-09-19
FR0608163A FR2906095B1 (en) 2006-09-19 2006-09-19 METHOD OF ENCRYPTING MESSAGES TO AT LEAST TWO RECEIVERS, ENCRYPTION DEVICE AND ASSOCIATED DECRYPTION DEVICE.

Publications (2)

Publication Number Publication Date
WO2008034971A2 WO2008034971A2 (en) 2008-03-27
WO2008034971A3 true WO2008034971A3 (en) 2008-05-08

Family

ID=38124146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2007/001510 WO2008034971A2 (en) 2006-09-19 2007-09-18 Method for encrypting messages for at least two receivers and related encryption device and decryption device

Country Status (2)

Country Link
FR (1) FR2906095B1 (en)
WO (1) WO2008034971A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020141371A1 (en) * 2001-03-28 2002-10-03 Hsu Raymond T. Method and apparatus for transmission framing in a wireless communication system
US20030039361A1 (en) * 2001-08-20 2003-02-27 Hawkes Philip Michael Method and apparatus for security in a data processing system
US20050141706A1 (en) * 2003-12-31 2005-06-30 Regli William C. System and method for secure ad hoc mobile communications and applications
US20060177067A1 (en) * 2005-02-03 2006-08-10 Samsung Electronics Co., Ltd. Hybrid broadcast encryption method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020141371A1 (en) * 2001-03-28 2002-10-03 Hsu Raymond T. Method and apparatus for transmission framing in a wireless communication system
US20030039361A1 (en) * 2001-08-20 2003-02-27 Hawkes Philip Michael Method and apparatus for security in a data processing system
US20050141706A1 (en) * 2003-12-31 2005-06-30 Regli William C. System and method for secure ad hoc mobile communications and applications
US20060177067A1 (en) * 2005-02-03 2006-08-10 Samsung Electronics Co., Ltd. Hybrid broadcast encryption method

Also Published As

Publication number Publication date
FR2906095B1 (en) 2009-04-03
FR2906095A1 (en) 2008-03-21
WO2008034971A2 (en) 2008-03-27

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