WO2008110971A3 - Encryption and decryption of auxiliary data - Google Patents

Encryption and decryption of auxiliary data Download PDF

Info

Publication number
WO2008110971A3
WO2008110971A3 PCT/IB2008/050845 IB2008050845W WO2008110971A3 WO 2008110971 A3 WO2008110971 A3 WO 2008110971A3 IB 2008050845 W IB2008050845 W IB 2008050845W WO 2008110971 A3 WO2008110971 A3 WO 2008110971A3
Authority
WO
WIPO (PCT)
Prior art keywords
encryption
decryption
auxiliary data
data
subunits
Prior art date
Application number
PCT/IB2008/050845
Other languages
French (fr)
Other versions
WO2008110971A2 (en
Inventor
Klaus Kursawe
Timothy Kerins
Stefan Katzenbeisser
Perthuis Hugues J M De
Original Assignee
Koninkl Philips Electronics Nv
Klaus Kursawe
Timothy Kerins
Stefan Katzenbeisser
Perthuis Hugues J M De
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 Koninkl Philips Electronics Nv, Klaus Kursawe, Timothy Kerins, Stefan Katzenbeisser, Perthuis Hugues J M De filed Critical Koninkl Philips Electronics Nv
Publication of WO2008110971A2 publication Critical patent/WO2008110971A2/en
Publication of WO2008110971A3 publication Critical patent/WO2008110971A3/en

Links

Classifications

    • 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
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • 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
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6209—Protecting access to data via a platform, e.g. using keys or access control rules to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/42623—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific decryption arrangements
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42692—Internal components of the client ; Characteristics thereof for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM]
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H04N21/4353—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving decryption of additional data
    • 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]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream decryption
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2107—File encryption

Abstract

The invention relates to encryption and decryption of auxiliary data in the memory of a computer system. The encryption and decryption utilizes a data structure of the auxiliary data. The data structure comprises at least partially independent subunits. The auxiliary data is received into a processor unit and an encryption/decryption key associated to a subunit is provided. The encrypting/decryption of the auxiliary data is performed in a process where the encryption/decryption key is changed at boundaries between subunits, so that subunits of the auxiliary data is encrypted/decrypted using associated encryption keys. Embodiments of the invention are applicable in the field of memory encryption of audio¬ visual data (AV data).
PCT/IB2008/050845 2007-03-13 2008-03-07 Encryption and decryption of auxiliary data WO2008110971A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07103974 2007-03-13
EP07103974.7 2007-03-13

Publications (2)

Publication Number Publication Date
WO2008110971A2 WO2008110971A2 (en) 2008-09-18
WO2008110971A3 true WO2008110971A3 (en) 2008-11-27

Family

ID=39709235

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/050845 WO2008110971A2 (en) 2007-03-13 2008-03-07 Encryption and decryption of auxiliary data

Country Status (1)

Country Link
WO (1) WO2008110971A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5757919A (en) * 1996-12-12 1998-05-26 Intel Corporation Cryptographically protected paging subsystem
US5991403A (en) * 1996-12-23 1999-11-23 Intel Corporation Recoverable cryptographic transformation on YUV data suitable for compressions
WO2005006197A2 (en) * 2003-06-25 2005-01-20 Intel Corporation An apparatus and method for memory encryption with reduced decryption latency

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5757919A (en) * 1996-12-12 1998-05-26 Intel Corporation Cryptographically protected paging subsystem
US5991403A (en) * 1996-12-23 1999-11-23 Intel Corporation Recoverable cryptographic transformation on YUV data suitable for compressions
WO2005006197A2 (en) * 2003-06-25 2005-01-20 Intel Corporation An apparatus and method for memory encryption with reduced decryption latency

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JUN YANG ET AL: "Fast secure processor for inhibiting software piracy and tampering", MICROARCHITECTURE, 2003. MICRO-36. PROCEEDINGS. 36TH ANNUAL IEEE/ACM I NTERNATIONAL SYMPOSIUM ON 3-5 DEC. 2003, PISCATAWAY, NJ, USA,IEEE, 3 December 2003 (2003-12-03), pages 351 - 360, XP010674237, ISBN: 978-0-7695-2043-8 *
PANG-CHICH WANG ET AL: "An AV object oriented encryption algorithm for MPEG-4 streams", MULTIMEDIA AND EXPO, 2004. ICME '04. 2004 IEEE INTERNATIONAL CONFERENC E ON TAIPEI, TAIWAN JUNE 27-30, 2004, PISCATAWAY, NJ, USA,IEEE, vol. 2, 27 June 2004 (2004-06-27), pages 971 - 974, XP010770983, ISBN: 978-0-7803-8603-7 *

Also Published As

Publication number Publication date
WO2008110971A2 (en) 2008-09-18

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