JP2013093096A - デジタル創作物の流通と使用を制御する方法および装置 - Google Patents
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Abstract
【解決手段】本発明は、添付された使用権情報と共に、記録担体に格納されるデジタル創作物の流通と使用を制御する方法および装置に関する。添付された使用権情報は、前記使用権情報の変化のたび毎に変更される隠し情報を使って、暗号化されるかまたは確認される。その隠し情報は、その使用権情報を暗号化するのに使用される暗号化キー、または、その使用権情報を含むデータブロックのチェックサムであっても良い。これにより、「コピー・アンド・リストア攻撃」が行なわれると、その隠し情報とその復元された使用権情報の間に不一致が生じるので、その攻撃は、成功しない。
【選択図】図1
Description
(i) データストリームの作為的誤りの中に、再訂正可能な隠し情報(キー)を格納すること;
(ii) ランレングス制限符号系列のビットをマージする際に、隠し情報を格納すること;
(iii) 隠し情報に従って、ランレングス制限符号系列の所定データまたは制御シンボルの所定ランレングスの極性を制御することによって、隠し情報を格納すること;または、
(iv) データストリームのタイムベースの複数の作為的エラーの中に隠し情報を格納すること。
KLT キー・ロッカー・テーブル
10 記録可能型ディスク
20 読み出し書き込み(RW)ユニット
21 ドライブコントローラ
22 キーロッカー更新暗号化ユニット
23 メモリ
Claims (13)
- デジタル創作物の流通と使用を制御するための方法であって、
a) 使用権を行使するために満足しなければならない1つ以上の条件を定義する当該使用権情報を前記デジタル創作物に添付するステップと、
b) 当該デジタル創作物とそれに添付された使用権情報を記録担体に格納するステップと;
c) 当該デジタル創作物が使用されるたびに、当該添付された使用権情報を更新するステップと;
前記使用権情報が、当該使用権が行使されてしまったことを示す場合は、当該デジタル創作物の使用を拒絶するステップとを
含む方法において、
前記使用権情報が変化したとき、隠しチャネルに格納されていてかつ当該使用権情報を暗号化または確認するために使用される隠し情報が、変化する
ことを特徴とする、
方法。 - 前記隠し情報が、前記使用権情報を含むデータブロックにわたるチェックサムであることを特徴とする、請求項1に記載の方法。
- 当該隠し情報が、当該使用権情報を解読するのに使用されるキーであって、当該使用権情報が変化したとき、当該キーが、ランダムに変更され、かつ当該使用権情報が、当該変更されたキーを使うことによって再度暗号化されることを特徴とする、請求項1に記載の方法。
- 以前のキーが、当該キーの変更の後に破壊されることを特徴とする、請求項3に記載の方法。
- 前記隠しチャネルが、市販の再生装置によってはアクセスできないように構成されていることを特徴とする、請求項1〜3のいずれかに記載の方法。
- 請求項5に記載の方法であって、当該隠しチャネルが、
− 再訂正可能な複数の作為的エラー内に当該隠し情報を格納し、
− ランレングス制限符号のビットをマージする際に、当該隠し情報を格納し、
− 当該隠し情報に従って、ランレングス制限符号の所定ワードの所定ランレングスの極性を制御し、
− 当該隠し情報を、タイムベースにおいて複数の作為的エラー内に格納し、
− 当該隠し情報を、ディスクコントローラによりメモリ内に埋め込んで格納することにより、生成されることを特徴とする方法。 - 当該添付された使用権情報が、当該デジタル創作物を解読するために使用されるキー情報と共に、テーブル内に格納されることを特徴とする、請求項2〜6のいずれかに記載の方法。
- 当該デジタル創作物が、インターネットからダウンロードされたオーディオトラックであり、当該記録担体が、記録可能型光ディスク、ハードディスク、光磁気記録装置、磁気テープ、またはメモリカードであることを特徴とする、請求項1〜7のいずれかに記載の方法。
- 当該使用権情報が、当該使用権が行使された時に更新することが可能なカウンタ情報を含むことを特徴とする、請求項1〜8のいずれかに記載の方法。
- 当該記録担体の各トラックが、それ自身の使用権情報と隠し情報とを含むことを特徴とする、請求項1〜9のいずれかに記載の方法。
- デジタル創作物と、使用権を行使するために満足しなければならない1つ以上の条件を定義する使用権情報とを格納する記録担体であって、
当該記録担体が、市販の再生装置ではアクセスすることができない隠しチャネルであり、かつ当該使用権情報を暗号化または確認するために使われかつ当該使用権情報が変化したときに変更される隠し情報がその中に格納される隠しチャネル、を含むことを特徴とする記録担体。 - 当該記録担体が、記録可能型光ディスク、特に、CDまたはDVDであることを特徴とする、請求項11に記載の記録担体。
- デジタル創作物の流通と使用を制御する装置であって、当該装置が、
a) 当該デジタル創作物と、使用権を行使するために満足しなければならない1つ以上の条件を定義する添付された使用権情報とを、記録担体に書き込む書き込み手段と、
b) 前記デジタル創作物の使用があるたびに、前記添付された使用権情報を更新する更新手段と、
c) 前記更新された使用権情報が、前記使用権は行使されてしまったことを示す場合には、当該デジタル創作物の使用を拒絶する制御手段とを含み、
d) 当該更新手段が、当該使用権情報が変化したときに、隠しチャネルに格納されていて、かつ当該使用権情報を暗号化または確認するために使用される隠し情報を、変更するように構成されていることを特徴とする装置。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00202888.4 | 2000-08-16 | ||
| EP00202888 | 2000-08-16 |
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| JP2011029040A Division JP2011123995A (ja) | 2000-08-16 | 2011-02-14 | デジタル創作物の流通と使用を制御する方法および装置 |
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| JP2002520226A Pending JP2004507017A (ja) | 2000-08-16 | 2001-08-02 | デジタル創作物の流通と使用を制御する方法および装置 |
| JP2011029040A Pending JP2011123995A (ja) | 2000-08-16 | 2011-02-14 | デジタル創作物の流通と使用を制御する方法および装置 |
| JP2013003622A Pending JP2013093096A (ja) | 2000-08-16 | 2013-01-11 | デジタル創作物の流通と使用を制御する方法および装置 |
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| JP2002520226A Pending JP2004507017A (ja) | 2000-08-16 | 2001-08-02 | デジタル創作物の流通と使用を制御する方法および装置 |
| JP2011029040A Pending JP2011123995A (ja) | 2000-08-16 | 2011-02-14 | デジタル創作物の流通と使用を制御する方法および装置 |
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|---|---|
| US (3) | US20020023219A1 (ja) |
| EP (2) | EP1843343B1 (ja) |
| JP (3) | JP2004507017A (ja) |
| KR (1) | KR20020042868A (ja) |
| CN (2) | CN1770299B (ja) |
| AR (1) | AR033559A1 (ja) |
| AT (1) | ATE374993T1 (ja) |
| AU (1) | AU2001289783A1 (ja) |
| BR (1) | BR0107115A (ja) |
| DE (1) | DE60130779T2 (ja) |
| ES (1) | ES2393616T3 (ja) |
| MX (1) | MXPA02003640A (ja) |
| MY (1) | MY128566A (ja) |
| RU (1) | RU2279724C2 (ja) |
| TW (1) | TW563319B (ja) |
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Families Citing this family (92)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000055861A1 (en) * | 1999-03-15 | 2000-09-21 | Koninklijke Philips Electronics N.V. | A method and system for providing copy-protection on a storage medium and storage medium for use in such a system |
| US6701528B1 (en) | 2000-01-26 | 2004-03-02 | Hughes Electronics Corporation | Virtual video on demand using multiple encrypted video segments |
| US8082572B1 (en) | 2000-06-08 | 2011-12-20 | The Directv Group, Inc. | Method and apparatus for transmitting, receiving, and utilizing audio/visual signals and other information |
| US7203311B1 (en) | 2000-07-21 | 2007-04-10 | The Directv Group, Inc. | Super encrypted storage and retrieval of media programs in a hard-paired receiver and storage device |
| US8140859B1 (en) | 2000-07-21 | 2012-03-20 | The Directv Group, Inc. | Secure storage and replay of media programs using a hard-paired receiver and storage device |
| US7203314B1 (en) | 2000-07-21 | 2007-04-10 | The Directv Group, Inc. | Super encrypted storage and retrieval of media programs with modified conditional access functionality |
| US7457414B1 (en) | 2000-07-21 | 2008-11-25 | The Directv Group, Inc. | Super encrypted storage and retrieval of media programs with smartcard generated keys |
| JP4281252B2 (ja) * | 2001-01-16 | 2009-06-17 | ソニー株式会社 | 情報記録装置、情報再生装置、情報記録方法、情報再生方法、および情報記録媒体、並びにプログラム記憶媒体 |
| JP3820581B2 (ja) * | 2001-04-04 | 2006-09-13 | ソニー株式会社 | 情報処理装置および方法、記録媒体、プログラム、並びに記録装置 |
| WO2002091377A1 (en) * | 2001-05-09 | 2002-11-14 | Koninklijke Philips Electronics N.V. | Method and apparatus for decrypting encrypted data stored on a record carrier |
| RU2297677C2 (ru) * | 2001-05-22 | 2007-04-20 | Конинклейке Филипс Электроникс Н.В. | Носитель записи для хранения цифрового продукта |
| US7039955B2 (en) | 2001-09-14 | 2006-05-02 | The Directv Group, Inc. | Embedded blacklisting for digital broadcast system security |
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| ATE374993T1 (de) | 2007-10-15 |
| ZA200202946B (en) | 2003-07-15 |
| EP1843343A2 (en) | 2007-10-10 |
| MXPA02003640A (es) | 2002-08-30 |
| JP2011123995A (ja) | 2011-06-23 |
| CN1263026C (zh) | 2006-07-05 |
| MY128566A (en) | 2007-02-28 |
| CN1393017A (zh) | 2003-01-22 |
| CN1770299A (zh) | 2006-05-10 |
| AR033559A1 (es) | 2003-12-26 |
| US20080288412A1 (en) | 2008-11-20 |
| BR0107115A (pt) | 2002-06-11 |
| EP1312087B1 (en) | 2007-10-03 |
| US20020023219A1 (en) | 2002-02-21 |
| CN1770299B (zh) | 2012-12-12 |
| ES2393616T3 (es) | 2012-12-26 |
| US20140040143A1 (en) | 2014-02-06 |
| EP1843343B1 (en) | 2012-10-10 |
| JP2004507017A (ja) | 2004-03-04 |
| DE60130779D1 (de) | 2007-11-15 |
| EP1312087A1 (en) | 2003-05-21 |
| WO2002015184A1 (en) | 2002-02-21 |
| RU2279724C2 (ru) | 2006-07-10 |
| HK1097947A1 (en) | 2007-07-06 |
| KR20020042868A (ko) | 2002-06-07 |
| AU2001289783A1 (en) | 2002-02-25 |
| DE60130779T2 (de) | 2008-07-03 |
| TW563319B (en) | 2003-11-21 |
| EP1843343A3 (en) | 2010-11-10 |
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