CN1327586A - 从被记录的公开资料恢复主密钥 - Google Patents

从被记录的公开资料恢复主密钥 Download PDF

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Publication number
CN1327586A
CN1327586A CN00801828A CN00801828A CN1327586A CN 1327586 A CN1327586 A CN 1327586A CN 00801828 A CN00801828 A CN 00801828A CN 00801828 A CN00801828 A CN 00801828A CN 1327586 A CN1327586 A CN 1327586A
Authority
CN
China
Prior art keywords
key
encrypted
master key
public
record
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN00801828A
Other languages
English (en)
Chinese (zh)
Inventor
M·A·埃普斯坦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke 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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CN1327586A publication Critical patent/CN1327586A/zh
Pending legal-status Critical Current

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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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Technology Law (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
  • Television Signal Processing For Recording (AREA)
CN00801828A 1999-09-03 2000-08-16 从被记录的公开资料恢复主密钥 Pending CN1327586A (zh)

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 (1)

Publication Number Publication Date
CN1327586A true CN1327586A (zh) 2001-12-19

Family

ID=23539874

Family Applications (1)

Application Number Title Priority Date Filing Date
CN00801828A Pending CN1327586A (zh) 1999-09-03 2000-08-16 从被记录的公开资料恢复主密钥

Country Status (5)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944992B (zh) * 2003-05-23 2012-03-21 纳格拉影像股份有限公司 用于加密和解密数据块的设备和方法

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020049483A (ko) * 2000-12-19 2002-06-26 조충환 바이어스 타이어의 카카스 구조
JP2002245427A (ja) * 2001-02-20 2002-08-30 Toshiba Corp Ｉｃカード、ｉｃカード端末装置およびｉｃカード複製方法
FI114362B (fi) * 2001-12-12 2004-09-30 Setec Oy Menetelmä laitteen salaisen avaimen ottamiseksi käyttöön toisessa laitteessa
JP3978046B2 (ja) * 2002-02-25 2007-09-19 日本電信電話株式会社 ファイルアクセス制御方法、プログラム及び記憶媒体
US7861082B2 (en) 2002-05-24 2010-12-28 Pinder Howard G Validating client-receivers
JP2007515723A (ja) * 2003-12-22 2007-06-14 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ アクティブなエンティティを使用するソフトウェア実行保護
CN1906558A (zh) 2003-12-30 2007-01-31 威步系统股份公司 重新获得授权码的方法
GB0400663D0 (en) * 2004-01-13 2004-02-11 Koninkl Philips Electronics Nv Secure data handling system, method and related apparatus
JP2005327235A (ja) 2004-04-13 2005-11-24 Hitachi Ltd 暗号化バックアップ方法および復号化リストア方法
CN101023433A (zh) * 2004-07-02 2007-08-22 皇家飞利浦电子股份有限公司 安全单元和保护数据的方法
NZ585225A (en) * 2004-08-12 2011-09-30 Cmla Llc Permutation data transform to enhance security
US9277295B2 (en) 2006-06-16 2016-03-01 Cisco Technology, Inc. Securing media content using interchangeable encryption key
US9137480B2 (en) * 2006-06-30 2015-09-15 Cisco Technology, Inc. Secure escrow and recovery of media device content keys

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237610A (en) * 1990-02-01 1993-08-17 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder
EP0802535B1 (en) * 1995-10-09 2005-06-15 Matsushita Electric Industrial Co., Ltd. Information recording medium, information reproduction apparatus and information reproduction method
US5857021A (en) * 1995-11-07 1999-01-05 Fujitsu Ltd. Security system for protecting information stored in portable 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
US7162452B1 (en) * 1999-03-25 2007-01-09 Epstein Michael A Key distribution via a memory device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101944992B (zh) * 2003-05-23 2012-03-21 纳格拉影像股份有限公司 用于加密和解密数据块的设备和方法

Also Published As

Publication number Publication date
EP1145242A2 (en) 2001-10-17
JP2003509881A (ja) 2003-03-11
EP1145242A3 (en) 2001-12-05
WO2001018807A3 (en) 2001-10-04
WO2001018807A2 (en) 2001-03-15
KR20010083940A (ko) 2001-09-03
KR100748867B1 (ko) 2007-08-13

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