JPH10502479A - 種々の記録媒体用のコピー防止の方法及び装置 - Google Patents
種々の記録媒体用のコピー防止の方法及び装置Info
- Publication number
- JPH10502479A JPH10502479A JP8503468A JP50346896A JPH10502479A JP H10502479 A JPH10502479 A JP H10502479A JP 8503468 A JP8503468 A JP 8503468A JP 50346896 A JP50346896 A JP 50346896A JP H10502479 A JPH10502479 A JP H10502479A
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- JP
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- Prior art keywords
- signal
- data
- key
- encryptor
- copy
- Prior art date
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
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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
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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
- G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
- G11B20/00123—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers the record carrier being identified by recognising some of its unique characteristics, e.g. a unique defect pattern serving as a physical signature of the record carrier
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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
- G11B20/0021—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
-
- 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
- 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
- G11B20/00246—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 local device, e.g. device key initially stored by the player or by the recorder
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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
- G11B20/0021—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
- G11B20/00485—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00492—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
- G11B20/00536—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein encrypted content data is subjected to a further, iterated encryption, e.g. interwoven encryption
-
- 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
- G11B20/00572—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium
- G11B20/00586—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which change the format of the recording medium said format change concerning the physical format of the recording medium
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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
- G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
- G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
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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
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
- H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
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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
- H04L9/3247—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 involving digital signatures
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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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- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
- G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
- G06F7/72—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using residue arithmetic
- G06F7/724—Finite field arithmetic
- G06F7/725—Finite field arithmetic over elliptic curves
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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
- H04L2209/605—Copy protection
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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
- H04N2005/91342—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being an authentication signal
-
- 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
Description
Claims (1)
- 【特許請求の範囲】 1. コピーが防止されるべき媒体に認証用署名を付加する段階と、 プログラムデータを第1の暗号化器に通す段階と、 上記第1の暗号化器からの上記第1の暗号化されたプログラムデータを第2の 暗号化器に通す段階と、 上記第2の暗号化器からの上記データを媒体に記録する段階と、 媒体再生装置内で上記認証用署名を検出する段階と、 上記媒体からの復号データを第1の暗号解読器に通す段階と、 上記第1の暗号解読器からの上記第1の暗号解読されたデータを第2の暗号解読 器に通す段階と、 認証用信号が検出されたとき、上記第2の暗号解読器の出力を選択する段階と 、 認証用信号が検出されないとき、上記第1の暗号解読器の出力を選択する段階 とからなる、プログラム配付媒体にコピー防止を設ける方法。 2. 上記第1の暗号化器及び上記第2の暗号解読器は相補的である請求項1記 載の方法。 3. 上記第2の暗号化器及び上記第1の暗号解読器は、非対称又は公開鍵暗号 化システムの相補的な部分である請求項1記載の方法。 4. 上記第1の暗号化器はデータブロックの少なくとも1ビットを反転又は交 換する装置であり、 上記第2の暗号解読器は相補的な論理演算を行う請求項2記載の方法。 5. データストリームを入力する段階と、 第1の鍵信号を発生させる段階と、 上記第1の鍵信号を対称暗号化器に結合する段階と、 上記データストリームを上記対称暗号化器に結合する段階と、 上記データストリームを暗号化する段階と、 上記対称暗号化器を選択器に接続する段階と、 上記データストリームを上記選択器に結合する段階と、 第2の鍵信号を発生させる段階と、 上記第2の鍵信号を非対称暗号化器に結合する段階と、 上記データストリーム又は対称的に暗号化されたデータのどちらが上記非対称 暗号化器に接続されるかを選択する段階と、 上記選択されたデータを非対称的に暗号化する段階と、 非対称的に暗号化されたデータを原盤作成装置のデータ処理部に結合する段階 と、 認証用署名信号を発生させる段階と、 上記認証用署名信号に従って時間ベースの制御機構を変更するため、対称的に 暗号化されたデータが上記非対称暗号化器に接続されたとき、上記認証用署名信 号をディスク原盤作成装置の時間ベースの制御機構に結合する段階とからなる、 記録媒体の原盤作成処理にコピー防止を設ける方法。 6. 上記記録媒体は光コンパクトディスクである請求項5記載の方法。 7. 上記記録媒体は、CD−ROMディスクである請求項5記載の方法。 8. 上記記録媒体は磁気テープである請求項5記載の方法。 9. 上記第1の鍵信号はランダムな鍵である請求項5記載の方法。 10. 上記第2の鍵信号は秘密鍵である請求項5記載の方法。 11. 上記データストリームは暗号化されていない請求項5記載の方法。 12. 再生装置において予め暗号化されたデータを含む予め記録された媒体の 再生処理にコピー防止を設ける方法であって、 上記予め記録された媒体からの予め暗号化されたデータを与える段階と、 第1の鍵信号を発生させる段階と、 上記第1の鍵信号を非対称暗号解読器に結合する段階と、 第1の暗号解読されたデータストリームを生成するため、上記予め記録された 媒体からのデータを非対称的に暗号解読する段階と、 鍵データベースから第2の鍵信号を検出する段階と、 第2の鍵信号を発生させる段階と、 上記第2の鍵信号を対称暗号解読器に結合する段階と、 上記第1の暗号解読されたデータストリームを上記対称暗号解読器に結合する 段階と、 第2の暗号解読されたデータストリームを生成するため、上記第1の暗号解読 されたデータストリームを対称的に暗号解読する段階と、 認証用信号を含むサーボ信号を提供する段階と、 上記認証用信号の存在を検出する段階と、 上記認証用信号の検出に基づいてコピー防止信号を生成する段階と、 コピー防止信号が存在しないとき、上記第1の暗号解読されたデータストリー ムを選択する段階と、 上記コピー防止信号が存在するとき、上記第2の暗号解読された データストリームを選択する段階と、 選択されたデータを上記再生装置のデータ処理部に出力する段階とからなる方 法。 13. 上記予め記録された媒体は、CD−ROMディスクである請求項12記 載の方法。 14. 上記予め記録された媒体はコンパクトオーディオディスクである請求項 12記載の方法。 15. 予め記録された媒体はコンパクトオーディオディスクである請求項12 記載の方法。 16. 記録媒体上に原盤レコーディングを行うコピー防止記録装置であって、 ディジタルデータストリームを受信する入力端子と、 対称暗号化器と、 上記対称暗号化器に結合される第1の鍵信号を供給する第1のランダム鍵発生 器と、 上記ディジタルデータストリーム又は上記対称暗号化器の出力のどちらが非対 称暗号化器に結合されるかを決定するオペレータ制御形スイッチと、 上記非対称暗号化器に結合される第2の鍵信号を供給する第2の鍵発生器と、 原盤レコーディング装置のデータ処理部に接続され、上記オペレータ制御形ス イッチがオフ位置にあるとき、上記ディジタルデータストリームを非対称的に暗 号化する非対称暗号化器と、 上記オペレータ制御形スイッチがオン位置にあるとき、上記原盤レコーディン グ装置の時間ベースの信号システムに結合され、原盤 レコーディングがコピー防止処理を施されるべきであることを示す認証用署名信 号を発生させる認証用署名発生器とにより構成される装置。 17. 上記記録媒体はディジタルオーディオテープである請求項16記載の装 置。 18. 上記記録媒体は、CD−ROMディスクである請求項16記載の装置。 19. 上記記録媒体はコンパクトオーディオディスクである請求項16記載の 装置。 20. 上記時間ベースの信号システムは半径方向のアクチュエータシステムで あり、 上記認証用署名信号は原盤作成中に上記半径方向のアクチュエータシステムの 半径方向の位置を変調する請求項16記載の装置。 21. 上記半径方向のアクチュエータシステムの変調は、通常の速度と、上記 通常の速度よりも僅かに大きい速度との間でランダムに変化するレートで、原盤 作成されているディスクの中心から移動することにより構成される請求項20記 載の装置。 22. 記録媒体上にコピーが防止された題材を原盤レコーディングする装置で あって、 ディジタルデータストリームを対称暗号化器に結合する手段と、 第1の鍵信号を発生させる手段と、 上記第1の鍵信号を使用して上記ディジタルデータストリームを対称的に暗号 化する手段と、 データを非対称暗号化器に結合する手段と、 上記ディジタルデータストリームと対称的に暗号化されたデータの間で選択を 行う手段と、 第2の鍵信号を発生させる手段と、 上記第2の鍵信号を用いて上記選択されたデータを非対称的に暗号化する手段 と、 非対称的に暗号解読されたデータを原盤レコーディング装置のデータ処理部に 結合する手段と、 上記ディジタルデータストリームはコピーが防止されるべきことを示す認証用 署名信号を発生させる手段と、 コピー防止モードと、コピーが防止されないモードとの間で選択を行う手段と 、 上記認証用署名信号に応答して、上記記録媒体の時間ベースのシステムに影響 を与える手段とからなる装置。 23. 上記第1の鍵はランダムな鍵である請求項22記載の装置。 24. 上記第2の鍵は秘密鍵である請求項22記載の装置。 25. 復号されたデータ信号を非対称暗号解読器に結合する手段と、 第1の鍵信号を発生させる手段と、 上記第1の鍵信号を用いて上記復号データを非対称的に暗号解読する手段と、 第2の鍵信号を発生させる手段と、 非対称的に暗号解読されたデータ信号を対称暗号解読器に結合する手段と、 クリアデータ信号を発生させるため、上記第2の鍵信号を用いて非対称的に暗 号解読されたデータを対称的に暗号解読する手段と、 上記非対称暗号解読器からの非対称的に暗号解読されたデータと、上記対称暗 号解読器からの対称的に暗号化されたデータとの間で選択を行う手段と、 上記クリアデータ信号はコピーが防止がされるべきであることを示すため認証 用署名信号を検出する手段と、 上記復号化されたデータ信号はコピーが防止されるか、又は、コピーが防止さ れないかを示すため、コピー防止モードとコピーの防止がなされないモードとの 間で選択を行う手段とからなる、再生装置用のコピー防止装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/267,635 US5513260A (en) | 1994-06-29 | 1994-06-29 | Method and apparatus for copy protection for various recording media |
US08/267,635 | 1994-06-29 | ||
PCT/US1995/008324 WO1996000963A1 (en) | 1994-06-29 | 1995-06-27 | Method and apparatus for copy protection for various recording media |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10502479A true JPH10502479A (ja) | 1998-03-03 |
JP4023818B2 JP4023818B2 (ja) | 2007-12-19 |
Family
ID=23019592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50346896A Expired - Lifetime JP4023818B2 (ja) | 1994-06-29 | 1995-06-27 | 種々の記録媒体用のコピー防止の方法及び装置 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5513260A (ja) |
EP (1) | EP0767957B1 (ja) |
JP (1) | JP4023818B2 (ja) |
AT (1) | ATE204670T1 (ja) |
AU (1) | AU695097B2 (ja) |
DE (1) | DE69522328T2 (ja) |
DK (1) | DK0767957T3 (ja) |
WO (1) | WO1996000963A1 (ja) |
Cited By (2)
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WO2003025930A1 (fr) * | 2001-09-14 | 2003-03-27 | Sony Corporation | Procede de reproduction de support d'enregistrement et appareil de reproduction, procede d'enregistrement de support d'enregistrement et appareil d'enregistrement |
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JP2013502627A (ja) * | 2009-08-13 | 2013-01-24 | スリング メディア ピーブイティー エルティーディー. | コピープロテクトされたデジタルメディアコンテンツのプレイスシフトを選択的に制限するシステム、方法及びプログラムアプリケーション |
Also Published As
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AU2956895A (en) | 1996-01-25 |
EP0767957B1 (en) | 2001-08-22 |
US5513260A (en) | 1996-04-30 |
WO1996000963A1 (en) | 1996-01-11 |
EP0767957A1 (en) | 1997-04-16 |
AU695097B2 (en) | 1998-08-06 |
DK0767957T3 (da) | 2001-10-08 |
JP4023818B2 (ja) | 2007-12-19 |
ATE204670T1 (de) | 2001-09-15 |
DE69522328D1 (de) | 2001-09-27 |
DE69522328T2 (de) | 2002-06-27 |
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