WO2002039661A3 - Data scrambling system for a shared transmission medium - Google Patents

Data scrambling system for a shared transmission medium Download PDF

Info

Publication number
WO2002039661A3
WO2002039661A3 PCT/US2001/046461 US0146461W WO0239661A3 WO 2002039661 A3 WO2002039661 A3 WO 2002039661A3 US 0146461 W US0146461 W US 0146461W WO 0239661 A3 WO0239661 A3 WO 0239661A3
Authority
WO
WIPO (PCT)
Prior art keywords
client modem
server
communications
scrambling
transmission medium
Prior art date
Application number
PCT/US2001/046461
Other languages
French (fr)
Other versions
WO2002039661A2 (en
Inventor
Robert P Basil
John B Di Terry
Gordon Thomas Mitchell
Bradley Richard Ree
Original Assignee
Coaxmedia Inc
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 Coaxmedia Inc filed Critical Coaxmedia Inc
Priority to CA002425388A priority Critical patent/CA2425388A1/en
Priority to EP01989916A priority patent/EP1334601A2/en
Priority to KR10-2003-7006281A priority patent/KR20030048464A/en
Priority to MXPA03004031A priority patent/MXPA03004031A/en
Priority to AU2002228799A priority patent/AU2002228799A1/en
Priority to JP2002541861A priority patent/JP2004523937A/en
Publication of WO2002039661A2 publication Critical patent/WO2002039661A2/en
Publication of WO2002039661A3 publication Critical patent/WO2002039661A3/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]
    • H04N21/40—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
    • H04N21/4408—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 encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • 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
    • H04N21/42676—Internal components of the client ; Characteristics thereof for modulating an analogue carrier signal to encode digital information or demodulating it to decode digital information, e.g. ADSL or cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
    • H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
    • 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
    • H04N21/42684—Client identification by a unique number or address, e.g. serial number, MAC address, socket ID
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/637—Control signals issued by the client directed to the server or network components
    • H04N21/6377—Control signals issued by the client directed to the server or network components directed to server
    • H04N21/63775—Control signals issued by the client directed to the server or network components directed to server for uploading keys, e.g. for a client to communicate its public key to the server
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network

Abstract

Methods of providing added security for communications between a server (36) and a particular client modem (70) on a shared communication media (50). The methods provide for passing communications containing scrambled keys to be used to form scrambling seeds for scrambling subsequent messages. In a preferred embodiment, both the server (36) and the client modem (70) generate and pass keys to be used for the communications between the server (36) and that client modem (70) to achieve a dynamic dual key scrambling system. In the preferred embodiment, the MAC or medium access control address for each client modem is used as a seed for encryption. Additionally, a seed based on the most recent CRC code from the last received data packet is used.
PCT/US2001/046461 2000-11-08 2001-11-08 Data scrambling system for a shared transmission medium WO2002039661A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA002425388A CA2425388A1 (en) 2000-11-08 2001-11-08 Data scrambling system for a shared transmission medium
EP01989916A EP1334601A2 (en) 2000-11-08 2001-11-08 Data scrambling system for a shared transmission medium
KR10-2003-7006281A KR20030048464A (en) 2000-11-08 2001-11-08 Data scrambling system for a shared transmission media
MXPA03004031A MXPA03004031A (en) 2000-11-08 2001-11-08 Data scrambling system for a shared transmission media.
AU2002228799A AU2002228799A1 (en) 2000-11-08 2001-11-08 Data scrambling system for a shared transmission medium
JP2002541861A JP2004523937A (en) 2000-11-08 2001-11-08 Data scrambling system for shared transmission media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24668400P 2000-11-08 2000-11-08
US60/246,684 2000-11-08

Publications (2)

Publication Number Publication Date
WO2002039661A2 WO2002039661A2 (en) 2002-05-16
WO2002039661A3 true WO2002039661A3 (en) 2003-02-20

Family

ID=22931760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/046461 WO2002039661A2 (en) 2000-11-08 2001-11-08 Data scrambling system for a shared transmission medium

Country Status (8)

Country Link
EP (1) EP1334601A2 (en)
JP (1) JP2004523937A (en)
KR (1) KR20030048464A (en)
CN (1) CN1473423A (en)
AU (1) AU2002228799A1 (en)
CA (1) CA2425388A1 (en)
MX (1) MXPA03004031A (en)
WO (1) WO2002039661A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4235520B2 (en) 2003-09-22 2009-03-11 株式会社リコー Information processing apparatus, printing apparatus, print data transmission method, printing method, print data transmission program, and recording medium
EP1821538A1 (en) * 2006-02-15 2007-08-22 Irdeto Access B.V. Method and system providing scrambled content
KR100923858B1 (en) 2007-12-04 2009-10-28 한국전자통신연구원 Cable network system and method for controlling security in cable network dynamic encrypted multicast session
CN102106108B (en) 2008-10-31 2014-08-27 Lg电子株式会社 Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal
EP3275121B1 (en) 2015-03-26 2020-06-10 Maxxian Technology Inc. Systems and methods for detecting and interfering with compromised devices
JP7193613B2 (en) * 2018-07-31 2022-12-20 テレフオンアクチーボラゲット エルエム エリクソン（パブル） Methods, transmitters, structures, transceivers and access points for providing multi-carrier on-off keying signals

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5375169A (en) * 1993-05-28 1994-12-20 Tecsec, Incorporated Cryptographic key management method and apparatus
US5432850A (en) * 1992-07-02 1995-07-11 Lannet Data Communications Ltd. Method and apparatus for secure data transmission
EP0765061A2 (en) * 1995-09-22 1997-03-26 Hewlett-Packard Company High-speed data communications modem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5432850A (en) * 1992-07-02 1995-07-11 Lannet Data Communications Ltd. Method and apparatus for secure data transmission
US5375169A (en) * 1993-05-28 1994-12-20 Tecsec, Incorporated Cryptographic key management method and apparatus
EP0765061A2 (en) * 1995-09-22 1997-03-26 Hewlett-Packard Company High-speed data communications modem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHNEIER B: "Applied Cryptography, PASSAGE", APPLIED CRYPTOGRAPHY. PROTOCOLS, ALGORITHMS, AND SOURCE CODE IN C, NEW YORK, JOHN WILEY & SONS, US, 1996, pages 372 - 375, 419, 420, XP002223127, ISBN: 0-471-11709-9 *

Also Published As

Publication number Publication date
CA2425388A1 (en) 2002-05-16
MXPA03004031A (en) 2004-05-05
EP1334601A2 (en) 2003-08-13
JP2004523937A (en) 2004-08-05
AU2002228799A1 (en) 2002-05-21
WO2002039661A2 (en) 2002-05-16
CN1473423A (en) 2004-02-04
KR20030048464A (en) 2003-06-19

Similar Documents

Publication Publication Date Title
WO2000041357A8 (en) Exchanging a secret over an unreliable network
US5193115A (en) Pseudo-random choice cipher and method
US8635456B2 (en) Remote secure authorization
EP0792042A3 (en) Method of effecting communications using common cryptokey
US5602917A (en) Method for secure session key generation
US6347143B1 (en) Cryptographic device with encryption blocks connected parallel
WO1998032065A3 (en) Improved network security device
CA2211301A1 (en) Network security device
WO2002082767A3 (en) System and method for distributing security processing functions for network applications
JPH09502845A (en) Key distribution device in encryption system
CA2313407A1 (en) Data communications
AU2002212908A1 (en) Securing voice over ip traffic
EP0840476A3 (en) Encrypted communication system that limits the damage caused when a secret key has been leaked
WO1999037057A3 (en) Method and apparatus for media data transmission
WO2001078491A3 (en) Systems and methods for encrypting/decrypting data using a broker agent
CA2291435A1 (en) Encryption/decryption method and authentication method using multiple-affine key system and apparatuses using the same
CA2459361A1 (en) Method for encoding and decoding communication data
WO2004042537A3 (en) System and method for securing digital messages
Preparata et al. Fully dynamic techniques for point location and transitive closure in planar structures
WO1999043120A8 (en) Information access control system and method
WO2002039661A3 (en) Data scrambling system for a shared transmission medium
CA2226831A1 (en) Decryption of retransmitted data in an encrypted communication system
WO2001091465A3 (en) Secure digital content delivery system and method over a broadcast network
WO2002041101A3 (en) Method and system for transmitting data with enhanced security that conforms to a network protocol
WO1998020645A3 (en) Improved tri-signature security architecture systems and methods

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ CZ DE DE DK DK DM DZ EC EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2425388

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: PA/a/2003/004031

Country of ref document: MX

Ref document number: 1020037006281

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2002541861

Country of ref document: JP

Ref document number: 018185509

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2001989916

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020037006281

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 2001989916

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWW Wipo information: withdrawn in national office

Ref document number: 2001989916

Country of ref document: EP