JP4770977B2 - 認証方法 - Google Patents
認証方法 Download PDFInfo
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- JP4770977B2 JP4770977B2 JP2009276002A JP2009276002A JP4770977B2 JP 4770977 B2 JP4770977 B2 JP 4770977B2 JP 2009276002 A JP2009276002 A JP 2009276002A JP 2009276002 A JP2009276002 A JP 2009276002A JP 4770977 B2 JP4770977 B2 JP 4770977B2
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- 238000000034 method Methods 0.000 title claims description 20
- 238000001514 detection method Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
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- 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
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- 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
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
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- G—PHYSICS
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- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
- G11B20/00195—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
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- G—PHYSICS
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- 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
- G11B20/00217—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00224—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a remote server
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- G11—INFORMATION STORAGE
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- G11B20/00217—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
- G11B20/00297—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD
- G11B20/00304—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier the key being stored in a management area, e.g. the video manager [VMG] of a DVD the key being stored in the lead-in area [LIA]
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- G—PHYSICS
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- 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
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- G11B20/0042—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 the copy protection scheme being related to a specific access protection standard
- G11B20/00449—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 the copy protection scheme being related to a specific access protection standard content scrambling system [CSS]
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- G11—INFORMATION STORAGE
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- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
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- 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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
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- 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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
- G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
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- 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
- G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
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- 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
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
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- 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 or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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- 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
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- 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
- H04L2209/603—Digital right managament [DRM]
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- 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
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
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- 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
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark
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- H04N5/00—Details of television systems
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- 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
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- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
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- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
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- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
- Storage Device Security (AREA)
Description
Claims (2)
- 符号化された画像データもしくは音声データを出力する符号化データ出力装置と記録媒体にデータを記録する記録装置との間で、コピー制御されたデータの受け渡しを行うときに装置間の認証を行う認証方法であって、
前記符号化データ出力装置と前記記録装置との間で認証を行う関係にあり、
符号化された画像データもしくは音声データには、前記画像データもしくは音声データの出力を制御するための情報を含む電子透かしが付加されており、
前記記録装置では、記録媒体の種類の判別する手段により記録媒体の種類の判別を行い、前記符号化データ出力装置と前記記録装置との間で受け渡すデータは、前記記録媒体の種類に対応した暗号方法により暗号化されており、
前記符号化データ出力装置と前記記録装置は、前記判別の結果に基づいて、前記記録媒体の種類に対応した認証方法を複数の認証方法から選択し、前記選択された認証方法により前記符号化データ出力装置と記録装置間の認証を行い、
前記認証を行った後にデータの受け渡しを行い、
前記認証を行った結果、認証が成功しなかったときには、前記符号化データ出力装置からのデータ出力を止め、
前記符号化データ出力装置では、該符号化データ出力装置に入力された符号化前のデータから画像データもしくは音声データに付加された電子透かしを前記記録媒体の種類の判別結果に基づいて検出し、前記画像データもしくは音声データの出力を制御することを特徴とする認証方法。 - 記録媒体に記録されているデータを再生し出力する再生装置と、画像データもしくは音声データの出力を制御するための情報を含む電子透かしが付加された画像データもしくは音声データの復号装置との間でコピー制御されたデータの受け渡しを行うときに装置間の認証を行う認証方法であって、
前記再生装置と前記復号装置との間で認証を行う関係にあり、
前記再生装置は、前記記録媒体の種類を判別する手段により記録媒体の種類の判別を行い、
前記記録媒体の種類には、少なくとも再生専用記録媒体または記録可能な記録媒体を含み、
前記再生装置と復号装置との間で受け渡すデータは、記録媒体の種類に対応した暗号化方法により暗号化されており、
前記再生装置と前記復号装置は前記記録媒体の種類に対応した認証方法を複数の認証方法から選択し、前記選択された認証方法により前記再生装置と前記復号装置との間の認証を行い、
前記認証を行った後にデータの受け渡しを行い、
前記認証を行った結果、認証が成功しなかったときには、前記再生装置からのデータの出力を止め、
前記復号装置にて、復号されたデータから画像データもしくは音声データに付加された電子透かしを前記記録媒体の種類の判別結果に基づいて検出し、前記画像データもしくは音声データの出力を制御することを特徴とする認証方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009276002A JP4770977B2 (ja) | 1998-04-14 | 2009-12-04 | 認証方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP1998102386 | 1998-04-14 | ||
JP10238698 | 1998-04-14 | ||
JP2009276002A JP4770977B2 (ja) | 1998-04-14 | 2009-12-04 | 認証方法 |
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JP2009051470A Division JP4645748B2 (ja) | 1998-04-14 | 2009-03-05 | 認証方法、再生方法及びデータ処理装置 |
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JP2011005399A Division JP5083420B2 (ja) | 1998-04-14 | 2011-01-14 | 認証方法、記録装置及び再生装置 |
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JP2010146692A JP2010146692A (ja) | 2010-07-01 |
JP4770977B2 true JP4770977B2 (ja) | 2011-09-14 |
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JP2008122855A Expired - Lifetime JP4565014B2 (ja) | 1998-04-14 | 2008-05-09 | 認証方法及びデータ処理装置 |
JP2009051470A Expired - Lifetime JP4645748B2 (ja) | 1998-04-14 | 2009-03-05 | 認証方法、再生方法及びデータ処理装置 |
JP2009276002A Expired - Lifetime JP4770977B2 (ja) | 1998-04-14 | 2009-12-04 | 認証方法 |
JP2011005399A Expired - Lifetime JP5083420B2 (ja) | 1998-04-14 | 2011-01-14 | 認証方法、記録装置及び再生装置 |
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JP2008122855A Expired - Lifetime JP4565014B2 (ja) | 1998-04-14 | 2008-05-09 | 認証方法及びデータ処理装置 |
JP2009051470A Expired - Lifetime JP4645748B2 (ja) | 1998-04-14 | 2009-03-05 | 認証方法、再生方法及びデータ処理装置 |
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JP2011005399A Expired - Lifetime JP5083420B2 (ja) | 1998-04-14 | 2011-01-14 | 認証方法、記録装置及び再生装置 |
Country Status (9)
Country | Link |
---|---|
US (6) | US6578149B1 (ja) |
EP (3) | EP2211346A3 (ja) |
JP (4) | JP4565014B2 (ja) |
KR (1) | KR100307122B1 (ja) |
CN (3) | CN1291411C (ja) |
DE (1) | DE69927545T2 (ja) |
MY (1) | MY132414A (ja) |
SG (1) | SG72943A1 (ja) |
TW (1) | TW425543B (ja) |
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