WO2001018807A3 - Recovery of a master key from recorded published material - Google Patents

Recovery of a master key from recorded published material Download PDF

Info

Publication number
WO2001018807A3
WO2001018807A3 PCT/EP2000/008054 EP0008054W WO0118807A3 WO 2001018807 A3 WO2001018807 A3 WO 2001018807A3 EP 0008054 W EP0008054 W EP 0008054W WO 0118807 A3 WO0118807 A3 WO 0118807A3
Authority
WO
WIPO (PCT)
Prior art keywords
master key
smartcard
key
trusted authority
encrypted
Prior art date
Application number
PCT/EP2000/008054
Other languages
French (fr)
Other versions
WO2001018807A2 (en
Inventor
Michael A Epstein
Original Assignee
Koninkl Philips Electronics Nv
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 filed Critical Koninkl Philips Electronics Nv
Priority to JP2001522536A priority Critical patent/JP2003509881A/en
Priority to EP00965881A priority patent/EP1145242A3/en
Publication of WO2001018807A2 publication Critical patent/WO2001018807A2/en
Publication of WO2001018807A3 publication Critical patent/WO2001018807A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • 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
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
    • G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
    • 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
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • H04L9/0897—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage involving additional devices, e.g. trusted platform module [TPM], smartcard or USB
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
    • G06F2211/008—Public Key, Asymmetric Key, Asymmetric Encryption
    • 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
    • G06F2221/2131—Lost password, e.g. recovery of lost or forgotten passwords
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/913—Television signal processing therefor for scrambling ; for copy protection
    • H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
    • H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled

Abstract

An encryption of a master key is included with each recording of encrypted published material that requires the master key for decryption and subsequent processing. The master key is encrypted using a public key associated with a trusted authority, typically encoded on a smartcard that is associated with each authorized user. Should the smartcard be lost, or the decryption device become inoperative, one of the recordings containing the encrypted master key is sent to the trusted authority for a retrieval of the master key. The trusted authority uses the private key corresponding to the public key that was used to encrypt the master key to determine the master key. In a preferred embodiment, the trusted authority is the vendor of the smartcard or other encryption/decryption device, and provides a replacement smartcard or device containing the retrieved master key, typically for a fee, for subsequent use by the user to decrypt other recorded material in the user's collection.
PCT/EP2000/008054 1999-09-03 2000-08-16 Recovery of a master key from recorded published material WO2001018807A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2001522536A JP2003509881A (en) 1999-09-03 2000-08-16 How to recover a master key from recorded electronic publications
EP00965881A EP1145242A3 (en) 1999-09-03 2000-08-16 Recovery of a master key from recorded published material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38982599A 1999-09-03 1999-09-03
US09/389,825 1999-09-03

Publications (2)

Publication Number Publication Date
WO2001018807A2 WO2001018807A2 (en) 2001-03-15
WO2001018807A3 true WO2001018807A3 (en) 2001-10-04

Family

ID=23539874

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/008054 WO2001018807A2 (en) 1999-09-03 2000-08-16 Recovery of a master key from recorded published material

Country Status (5)

Country Link
EP (1) EP1145242A3 (en)
JP (1) JP2003509881A (en)
KR (1) KR100748867B1 (en)
CN (1) CN1327586A (en)
WO (1) WO2001018807A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9277295B2 (en) 2006-06-16 2016-03-01 Cisco Technology, Inc. Securing media content using interchangeable encryption key

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
KR20020049483A (en) * 2000-12-19 2002-06-26 조충환 Carcass member of bias tire
JP2002245427A (en) * 2001-02-20 2002-08-30 Toshiba Corp Ic card, ic card terminal device and method for duplicating ic card
FI114362B (en) * 2001-12-12 2004-09-30 Setec Oy A method for enabling a device secret key on another device
JP3978046B2 (en) * 2002-02-25 2007-09-19 日本電信電話株式会社 File access control method, program, and storage medium
US7861082B2 (en) 2002-05-24 2010-12-28 Pinder Howard G Validating client-receivers
EP1480371A1 (en) * 2003-05-23 2004-11-24 Mediacrypt AG Device and method for encrypting and decrypting a block of data
KR20060127007A (en) * 2003-12-22 2006-12-11 코닌클리케 필립스 일렉트로닉스 엔.브이. Software execution protection using an active entity
ATE434227T1 (en) 2003-12-30 2009-07-15 Wibu Systems Ag METHOD FOR RECOVERING AN AUTHORIZATION CODE
GB0400663D0 (en) * 2004-01-13 2004-02-11 Koninkl Philips Electronics Nv Secure data handling system, method and related apparatus
JP2005327235A (en) 2004-04-13 2005-11-24 Hitachi Ltd Method for encryption backup and method for decryption restoration
EP1766545A2 (en) * 2004-07-02 2007-03-28 Philips Intellectual Property & Standards GmbH Security unit and method for protecting data
NZ592242A (en) * 2004-08-12 2012-03-30 Cmla Llc Permutation data transform to enhance security
US9137480B2 (en) 2006-06-30 2015-09-15 Cisco Technology, Inc. Secure escrow and recovery of media device content keys

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0679029A1 (en) * 1991-03-29 1995-10-25 Scientific-Atlanta, Inc. System for cooperating with a satellite transponder
EP0773490A1 (en) * 1995-11-07 1997-05-14 Fujitsu Limited Security system for protecting information stored in storage media
EP0802535A1 (en) * 1995-10-09 1997-10-22 Matsushita Electric Industrial Co., Ltd. Information recording medium, information reproduction apparatus and information reproduction method
WO1999004530A1 (en) * 1997-07-15 1999-01-28 V-One Corporation File encryption with key recovery
EP0936812A1 (en) * 1998-02-13 1999-08-18 CANAL+ Société Anonyme Method and apparatus for recording of encrypted digital data
WO2000062290A1 (en) * 1999-03-25 2000-10-19 Koninklijke Philips Electronics N.V. Key distribution via a memory device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0679029A1 (en) * 1991-03-29 1995-10-25 Scientific-Atlanta, Inc. System for cooperating with a satellite transponder
EP0802535A1 (en) * 1995-10-09 1997-10-22 Matsushita Electric Industrial Co., Ltd. Information recording medium, information reproduction apparatus and information reproduction method
EP0773490A1 (en) * 1995-11-07 1997-05-14 Fujitsu Limited Security system for protecting information stored in storage media
WO1999004530A1 (en) * 1997-07-15 1999-01-28 V-One Corporation File encryption with key recovery
EP0936812A1 (en) * 1998-02-13 1999-08-18 CANAL+ Société Anonyme Method and apparatus for recording of encrypted digital data
WO2000062290A1 (en) * 1999-03-25 2000-10-19 Koninklijke Philips Electronics N.V. Key distribution via a memory device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TASKETT J: "SMART CARDS AS A REPLACEABLE SECURITY ELEMENT FOR TELEVISION DELIVERY ACCESS CONTROL", PROCEEDINGS OF THE ANNUAL CONVENTION AND EXPOSITION,US,WASHINGTON, NCTA, vol. CONVENTION 42, 6 June 1993 (1993-06-06), pages 128 - 132, XP000410492 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9277295B2 (en) 2006-06-16 2016-03-01 Cisco Technology, Inc. Securing media content using interchangeable encryption key

Also Published As

Publication number Publication date
WO2001018807A2 (en) 2001-03-15
KR20010083940A (en) 2001-09-03
KR100748867B1 (en) 2007-08-13
JP2003509881A (en) 2003-03-11
EP1145242A2 (en) 2001-10-17
EP1145242A3 (en) 2001-12-05
CN1327586A (en) 2001-12-19

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