WO1998027687A3 - Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver - Google Patents

Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver Download PDF

Info

Publication number
WO1998027687A3
WO1998027687A3 PCT/IB1997/001558 IB9701558W WO9827687A3 WO 1998027687 A3 WO1998027687 A3 WO 1998027687A3 IB 9701558 W IB9701558 W IB 9701558W WO 9827687 A3 WO9827687 A3 WO 9827687A3
Authority
WO
WIPO (PCT)
Prior art keywords
bitstream
text bitstream
bits
cipher text
decryption engine
Prior art date
Application number
PCT/IB1997/001558
Other languages
French (fr)
Other versions
WO1998027687A2 (en
Inventor
David Cuccia
Original Assignee
Philips Electronics Nv
Philips Norden Ab
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 Philips Electronics Nv, Philips Norden Ab filed Critical Philips Electronics Nv
Priority to DE69721743T priority Critical patent/DE69721743T2/en
Priority to EP97946000A priority patent/EP0885503B1/en
Priority to JP52749398A priority patent/JP4302189B2/en
Publication of WO1998027687A2 publication Critical patent/WO1998027687A2/en
Publication of WO1998027687A3 publication Critical patent/WO1998027687A3/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
    • 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
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
    • 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
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
    • H04N21/4385—Multiplex stream processing, e.g. multiplex stream decrypting
    • H04N21/43853—Multiplex stream processing, e.g. multiplex stream decrypting involving multiplex stream decryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Abstract

A method for providing a secure interface between a decryption engine and a system decoder of a digital receiver, e.g., an MPEG-2 digital television receiver. The system decoder receives an encrypted bitstream and produces a cipher text bitstream which is supplied to the decryption engine via a first parallel data bus which includes a plurality N of parallel bit lines corresponding to respective N bits of the cipher text bitstream. The decryption engine decrypts the cipher text bitstream and produces a plain text bitstream which is supplied to the system decoder via a second parallel data bus which includes a plurality N of parallel bit lines corresponding to respective N bits of the plain text bitstream. The method includes the steps of scrambling the bit order of the N bits of the cipher text bitstream on the respective N bit lines of the first data bus, to thereby produce a scrambled cipher text bitstream N-bits wide, descrambling the bit order of the N bits of the scrambled cipher text bitstream, to thereby produce a descrambled cipher text bitstream which is the same as the original cipher text bitstream, employing the decryption engine to decrypt the descrambled cipher text bitstream, to thereby produce the plain text bitstream, scrambling the bit order of the N bits of the plain text bitstream on the respective N bit lines of the second data bus, to thereby produce a scrambled plain text bitstream N-bits wide, and descrambling the bit order of the N bits of the scrambled plain text bitstream, to thereby produce a descrambled plain text bitstream which is the same as the original plain text bitstream. A digital receiver which implements this method is also disclosed.
PCT/IB1997/001558 1996-12-18 1997-12-11 Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver WO1998027687A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69721743T DE69721743T2 (en) 1996-12-18 1997-12-11 METHOD AND DEVICE FOR GENERATING A CRYPTOGRAPHICALLY SECURE INTERFACE BETWEEN THE DECRYLING DEVICE AND THE SYSTEM DECODER OF A DIGITAL TELEVISION RECEIVER
EP97946000A EP0885503B1 (en) 1996-12-18 1997-12-11 Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver
JP52749398A JP4302189B2 (en) 1996-12-18 1997-12-11 Method and apparatus for cryptographically ensuring an interface between a decryption organization and a system decoder of a digital television receiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/768,489 US5818934A (en) 1996-12-18 1996-12-18 Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver
US08/768,489 1996-12-18

Publications (2)

Publication Number Publication Date
WO1998027687A2 WO1998027687A2 (en) 1998-06-25
WO1998027687A3 true WO1998027687A3 (en) 1998-08-20

Family

ID=25082644

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1997/001558 WO1998027687A2 (en) 1996-12-18 1997-12-11 Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver

Country Status (5)

Country Link
US (1) US5818934A (en)
EP (1) EP0885503B1 (en)
JP (1) JP4302189B2 (en)
DE (1) DE69721743T2 (en)
WO (1) WO1998027687A2 (en)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6020189A (en) * 1996-08-30 2000-02-01 The Johns Hopkins University School Of Medicine Fibroblast growth factor homologous factors (FHFs) and methods of use
GB9704638D0 (en) * 1997-03-06 1997-04-23 Lsi Logic Corp Digital video broadcasting
GB9704630D0 (en) * 1997-03-06 1997-04-23 Lsi Logic Corp Digital video broadcasting
US8584255B2 (en) * 1999-05-05 2013-11-12 Sony United Kingdom Limited Networked conditional access module
US7305695B1 (en) 1999-01-20 2007-12-04 Intel Corporation System for providing video on demand with pause feature
US6697489B1 (en) 1999-03-30 2004-02-24 Sony Corporation Method and apparatus for securing control words
US7730300B2 (en) 1999-03-30 2010-06-01 Sony Corporation Method and apparatus for protecting the transfer of data
US7085377B1 (en) * 1999-07-30 2006-08-01 Lucent Technologies Inc. Information delivery in a multi-stream digital broadcasting system
US7039614B1 (en) * 1999-11-09 2006-05-02 Sony Corporation Method for simulcrypting scrambled data to a plurality of conditional access devices
US7225164B1 (en) 2000-02-15 2007-05-29 Sony Corporation Method and apparatus for implementing revocation in broadcast networks
JP2001309247A (en) * 2000-04-19 2001-11-02 Matsushita Electric Ind Co Ltd High frequency signal receiving device
US20030206631A1 (en) * 2000-06-22 2003-11-06 Candelore Brant L. Method and apparatus for scrambling program data for furture viewing
US7203311B1 (en) 2000-07-21 2007-04-10 The Directv Group, Inc. Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage device
US7124303B2 (en) 2001-06-06 2006-10-17 Sony Corporation Elementary stream partial encryption
US7747853B2 (en) 2001-06-06 2010-06-29 Sony Corporation IP delivery of secure digital content
US7895616B2 (en) 2001-06-06 2011-02-22 Sony Corporation Reconstitution of program streams split across multiple packet identifiers
US7823174B2 (en) 2002-01-02 2010-10-26 Sony Corporation Macro-block based content replacement by PID mapping
US7218738B2 (en) 2002-01-02 2007-05-15 Sony Corporation Encryption and content control in a digital broadcast system
US7765567B2 (en) 2002-01-02 2010-07-27 Sony Corporation Content replacement by PID mapping
US7242773B2 (en) 2002-09-09 2007-07-10 Sony Corporation Multiple partial encryption using retuning
US7039938B2 (en) 2002-01-02 2006-05-02 Sony Corporation Selective encryption for video on demand
KR100943131B1 (en) * 2002-01-02 2010-02-18 소니 일렉트로닉스 인코포레이티드 Decoding and decryption of partially encrypted information
US7292690B2 (en) 2002-01-02 2007-11-06 Sony Corporation Video scene change detection
US7221757B2 (en) * 2002-08-15 2007-05-22 Opentv, Inc. Method and system for accelerated data encryption
US8818896B2 (en) 2002-09-09 2014-08-26 Sony Corporation Selective encryption with coverage encryption
US7724907B2 (en) 2002-11-05 2010-05-25 Sony Corporation Mechanism for protecting the transfer of digital content
US8572408B2 (en) 2002-11-05 2013-10-29 Sony Corporation Digital rights management of a digital device
US8667525B2 (en) 2002-12-13 2014-03-04 Sony Corporation Targeted advertisement selection from a digital stream
US8645988B2 (en) 2002-12-13 2014-02-04 Sony Corporation Content personalization for digital content
IL155416A0 (en) * 2003-04-13 2003-11-23 Nds Ltd System for securing access to data streams
US7853980B2 (en) 2003-10-31 2010-12-14 Sony Corporation Bi-directional indices for trick mode video-on-demand
CN100356342C (en) * 2003-11-18 2007-12-19 株式会社瑞萨科技 Information processing unit
US7590243B2 (en) 2004-05-04 2009-09-15 The Directv Group, Inc. Digital media conditional access system for handling digital media content
US7895617B2 (en) 2004-12-15 2011-02-22 Sony Corporation Content substitution editor
US8041190B2 (en) 2004-12-15 2011-10-18 Sony Corporation System and method for the creation, synchronization and delivery of alternate content
TWI289406B (en) * 2005-07-12 2007-11-01 Coretronic Corp Television signal-receiving module
US9325944B2 (en) 2005-08-11 2016-04-26 The Directv Group, Inc. Secure delivery of program content via a removable storage medium
US8185921B2 (en) 2006-02-28 2012-05-22 Sony Corporation Parental control of displayed content using closed captioning
US8996421B2 (en) 2006-05-15 2015-03-31 The Directv Group, Inc. Methods and apparatus to conditionally authorize content delivery at broadcast headends in pay delivery systems
US8775319B2 (en) 2006-05-15 2014-07-08 The Directv Group, Inc. Secure content transfer systems and methods to operate the same
US7992175B2 (en) 2006-05-15 2011-08-02 The Directv Group, Inc. Methods and apparatus to provide content on demand in content broadcast systems
US8095466B2 (en) 2006-05-15 2012-01-10 The Directv Group, Inc. Methods and apparatus to conditionally authorize content delivery at content servers in pay delivery systems
US8001565B2 (en) 2006-05-15 2011-08-16 The Directv Group, Inc. Methods and apparatus to conditionally authorize content delivery at receivers in pay delivery systems
US9679602B2 (en) 2006-06-14 2017-06-13 Seagate Technology Llc Disc drive circuitry swap
US9225761B2 (en) 2006-08-04 2015-12-29 The Directv Group, Inc. Distributed media-aggregation systems and methods to operate the same
US9178693B2 (en) 2006-08-04 2015-11-03 The Directv Group, Inc. Distributed media-protection systems and methods to operate the same
EP2119230B1 (en) * 2007-01-11 2013-07-03 NDS Limited Processing video content
US8000467B2 (en) * 2007-03-19 2011-08-16 Stmicroelectronics Sa Data parallelized encryption and integrity checking method and device
US9305590B2 (en) 2007-10-16 2016-04-05 Seagate Technology Llc Prevent data storage device circuitry swap
US7726579B2 (en) * 2008-01-10 2010-06-01 Sony Corporation In-chassis TV chip with dynamic purse
US10057641B2 (en) 2009-03-25 2018-08-21 Sony Corporation Method to upgrade content encryption
US8379847B2 (en) * 2010-06-30 2013-02-19 International Business Machines Corporation Data and control encryption
US10568202B2 (en) 2017-07-25 2020-02-18 International Business Machines Corporation Tamper-respondent assembly with interconnect characteristic(s) obscuring circuit layout

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204900A (en) * 1991-03-04 1993-04-20 Pires H George Coding system for descrambling video
EP0589459A1 (en) * 1992-09-24 1994-03-30 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus
EP0763936A2 (en) * 1995-09-18 1997-03-19 Lg Electronics Inc. Illegal view/copy protection method and apparatus for digital broadcasting system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944006A (en) * 1987-03-12 1990-07-24 Zenith Electronics Corporation Secure data packet transmission system and method
FR2704703B1 (en) * 1993-04-28 1995-06-30 Gemplus Card Int APPARATUS FOR EXPLOITING ELECTRIC SIGNALS.
JPH0730855A (en) * 1993-07-08 1995-01-31 Sony Corp Recording method for video data

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5204900A (en) * 1991-03-04 1993-04-20 Pires H George Coding system for descrambling video
EP0589459A1 (en) * 1992-09-24 1994-03-30 Matsushita Electric Industrial Co., Ltd. Recording and reproducing apparatus
EP0763936A2 (en) * 1995-09-18 1997-03-19 Lg Electronics Inc. Illegal view/copy protection method and apparatus for digital broadcasting system

Also Published As

Publication number Publication date
DE69721743T2 (en) 2004-03-18
US5818934A (en) 1998-10-06
JP4302189B2 (en) 2009-07-22
EP0885503A3 (en) 1999-12-29
DE69721743D1 (en) 2003-06-12
EP0885503A2 (en) 1998-12-23
JP2000507072A (en) 2000-06-06
WO1998027687A2 (en) 1998-06-25
EP0885503B1 (en) 2003-05-07

Similar Documents

Publication Publication Date Title
WO1998027687A3 (en) Method and apparatus for providing a cryptographically secure interface between the decryption engine and the system decoder of a digital television receiver
US5381481A (en) Method and apparatus for uniquely encrypting a plurality of services at a transmission site
EP0891670B1 (en) Method for providing a secure communication between two devices and application of this method
KR100726871B1 (en) Process for protecting an information item transmitted from a security element to a decoder and protection system using such a process
US4887296A (en) Cryptographic system for direct broadcast satellite system
EP0843479B1 (en) Process for data certification by scrambling and certification system using such a process
AU3505700A (en) Method and apparatus for securing control words
KR920702158A (en) External security module for television signal decoder
JP2003517218A5 (en) A system that manages access between a method of protecting audio / visual streams and a service provider and a host device to which a smart card is attached.
JPH06125554A (en) Protective method for encoding of sunscribed satellite television
RU2000111530A (en) METHOD AND DEVICE FOR ENCRYPTED DATA STREAM TRANSLATION
KR20110096056A (en) Content decryption device and encryption system using an additional key layer
WO2005008951A3 (en) Method, system and media for recording traceable encryption and/or decryption
JPH0795725B2 (en) Transformer control method and device in broadcasting facility
EP0179612A2 (en) Cryptographic system for direct broadcast satellite network
KR20080113064A (en) Decryption key reuse in ancrypted digital data stream distribution systems
EP1418750A1 (en) Security integrated circuit
JPH07193802A (en) Reception station management equipment
US20060098822A1 (en) Interoperable conditional access receptors without consensual key sharing
JPH06169307A (en) Coding device and decoding device
CA2168748C (en) Method and apparatus for uniquely encrypting a plurality of services at a transmission site
CA2250833C (en) Method for providing a secure communication between two devices and application of this method
KR0170964B1 (en) Encryption method of pn-key in cable television
KR100850946B1 (en) Apparatus and method for conditional access
KR0154929B1 (en) Encryption and decryption method of pn-key

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

WWE Wipo information: entry into national phase

Ref document number: 1997946000

Country of ref document: EP

AK Designated states

Kind code of ref document: A3

Designated state(s): JP

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWP Wipo information: published in national office

Ref document number: 1997946000

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1997946000

Country of ref document: EP