WO2006111949A3 - Security scheme for mobile devices - Google Patents

Security scheme for mobile devices Download PDF

Info

Publication number
WO2006111949A3
WO2006111949A3 PCT/IL2006/000070 IL2006000070W WO2006111949A3 WO 2006111949 A3 WO2006111949 A3 WO 2006111949A3 IL 2006000070 W IL2006000070 W IL 2006000070W WO 2006111949 A3 WO2006111949 A3 WO 2006111949A3
Authority
WO
WIPO (PCT)
Prior art keywords
cek
mobile devices
content
gpk
key
Prior art date
Application number
PCT/IL2006/000070
Other languages
French (fr)
Other versions
WO2006111949A2 (en
Inventor
Erez Waisbard
Arieh Moller
Hillel Solow
Original Assignee
Nds Ltd
Erez Waisbard
Arieh Moller
Hillel Solow
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 Nds Ltd, Erez Waisbard, Arieh Moller, Hillel Solow filed Critical Nds Ltd
Publication of WO2006111949A2 publication Critical patent/WO2006111949A2/en
Publication of WO2006111949A3 publication Critical patent/WO2006111949A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
    • 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
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • 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
    • H04L9/088—Usage controlling of secret information, e.g. techniques for restricting cryptographic keys to pre-authorized uses, different access levels, validity of crypto-period, different key- or password length, or different strong and weak cryptographic algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8146—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/603—Digital right managament [DRM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/80—Wireless

Abstract

At a content provider providing content for broadcast to a plurality of mobile devices, a method for distributing keys for decrypting content, the method including providing a plurality of encrypted decryption keys, the encrypted decryption keys being encrypted according to fSMK(gPK(CEK)), where f and g are encryption functions, fSMK is an encryption function encrypting gPK(CEK) according to a key, SKM, gPK(CEK) is an encryption function encrypting CEK according to a key PK, and CEK is a content encryption key enabling decryption of the content for a single crypto-period, transmitting the plurality of encrypted decryption keys to the plurality of mobile devices, and at an appropriate time relative to broadcast of the content encrypted according to key CEK, transmitting the key SKM to the plurality of mobile devices, thereby enabling the plurality of mobile devices to decrypt fSMK(gPK(CEK)) and derive gPK (CEK). Related apparatus and methods are described.
PCT/IL2006/000070 2005-04-19 2006-01-18 Security scheme for mobile devices WO2006111949A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67263705P 2005-04-19 2005-04-19
US60/672,637 2005-04-19

Publications (2)

Publication Number Publication Date
WO2006111949A2 WO2006111949A2 (en) 2006-10-26
WO2006111949A3 true WO2006111949A3 (en) 2006-12-14

Family

ID=37115549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2006/000070 WO2006111949A2 (en) 2005-04-19 2006-01-18 Security scheme for mobile devices

Country Status (1)

Country Link
WO (1) WO2006111949A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8396222B2 (en) 2008-03-10 2013-03-12 Nds Limited Key distribution system
FR2932042B1 (en) * 2008-05-30 2010-05-07 Viaccess Sa METHODS AND SALVES EMITTERS OF DIGITAL MULTIMEDIA CONTENT, RECORDING MEDIUM FOR SUCH METHODS.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030172262A1 (en) * 2002-03-06 2003-09-11 Ian Curry Secure communication apparatus and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030172262A1 (en) * 2002-03-06 2003-09-11 Ian Curry Secure communication apparatus and method

Also Published As

Publication number Publication date
WO2006111949A2 (en) 2006-10-26

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