JP2004320819A - データを一意的に端局暗号化するための方法及び装置 - Google Patents
データを一意的に端局暗号化するための方法及び装置 Download PDFInfo
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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
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/065—Encryption by serially and continuously modifying data stream elements, e.g. stream cipher systems, RC4, SEAL or A5/3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
- H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
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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)
- H04L9/083—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) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
- H04L9/0833—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) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key
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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
- H04L2209/601—Broadcast encryption
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- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Storage Device Security (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
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Abstract
【解決手段】 複数Nの伝送地点と少なくとも一つの受信地点を具備するデータ伝送システムにおいて、各伝送地点におけるデータのセットが、(a)各伝送地点にその伝送地点に一意的な同報通信キーとすべての伝送地点に対して同一のシステムキー(sk)を設け、システムキー(sk)は、複数Sのビットを具備し、同報通信キーの各々は、一意的な複数Bのビットを具備し、この場合、BはSよりも小さいことと、(b)各伝送地点において所定の方法で、その伝送地点に対する一意的なデータ暗号化キーを発生するために、システムキーとその伝送地点に一意的な同報通信キーを畳み込むことと、(c)その地点において発生された一意的なデータ暗号化キーで各伝送地点におけるデータのセットを暗号化することとにより、一意的に暗号化される。
【選択図】 図2
Description
本発明の一つの実施態様により、データのセットが、少なくとも一つの受信地点への伝送と続く解読のために、複数Nの伝送地点の各々において一意的に暗号化される。N伝送地点の各々は、その伝送地点に一意的な同報通信キーと、すべての伝送地点に対して同一のシステムキーを設けられる。システムキーは、複数Sのビットを具備し、N個の同報通信キーの各々は、一意的な複数Bのビットを具備し、この場合、BはSよりも小さい。各伝送地点において、システムキーとその伝送地点に一意的な同報通信キーは、その伝送地点のために一意的なデータ暗号化キーを発生するために所定の方法で畳み込まれる。各伝送地点において発生された一意的な暗号化キーは、第3数Eのビットを具備し、Eは、Bよりも少なくとも大きい。好ましくは、Eは、S以上である。各伝送地点において、データのセットは、その後、その地点において発生された一意的なデータ暗号化キーで暗号化される。各伝送地点において一意的に暗号化されたデータのセットは、その後、受信地点に伝送される。受信地点におけるメモリにおいて、システムキーと同報通信キーの各々が記憶され、暗号化データセットの選択された一つを受信地点において解読可能にする。受信地点においてシステムキーと同報通信キーを記憶するために必要なメモリ容量は、((NxB)+S)ビットより大きくない。
前述の要約並びに好ましい実施態様の次の詳細な説明は、添付の図面に関連して精読した時、より良く理解される。発明を例示する目的のために、図面において、現在好ましい実施態様が示されるが、発明は、開示された特定の方法及び装置に限定されないことが理解される。図面において、第1図は、暗号法技術を使用する先行技術のデータ伝送システムのブロック図である。
化キーを発生するために、システムキー108とその地点に一意的な同報通信キー110を畳み込むためにプログラマー地点100において設けられる。第3図の畳み込み手段50は、第2図の畳み込み手段に同一である。プログラマー地点100において畳み込み手段50によって発生された一意的な暗号化キーは、ライン52を介して暗号器54に送られる。第3図の暗号器54は、第2図の暗号器54に同一である。暗号器54は、畳み込み手段50によって発生された一意的な暗号化キーでプログラマー地点100において局所的に発生されたプログラムキー106を暗号化するために動作する。マルチプレクサー112は、一入力における暗号化プログラムキーと別の入力における暗号化プログラムデータを受け取る。マルチプレクサー112は、任意の非常に公知の方法においてプログラムキーとプログラムデータを多重化し、多重化データを受信地点に伝送する。上記の如く、受信地点への伝送のために暗号化プログラムキーとプログラムデータを多重化する好ましい方法は、”SystemandMethod for Transmitting a Plurality of Digital Services”(Attorney Docket No.SA−0019A)と題する1992年10月30日に提出された同時係属米国特許出願第07/968,846号において見いだされる。
即ち、解読器64と選択されたプログラマー地点における暗号器54は、同一の暗号化機能を実現しなければならない。解読されたプログラムキーは、ライン76を介して解読器122に出力される。解読されたプログラムキーにより、解読器122は、受信された暗号化プログラムデータを解読することができる。解読されたプログラムデータは、その後、所望に応じて受信地点における使用のためにライン124を介して出力される。
Claims (1)
- 複数Nの送信装置の各々から少なくとも一つの受信装置へデータのセットを伝送するための方法であって、
各送信装置は、その送信装置に一意的な同報通信キーと、すべての送信装置に対して同一のシステムキーへのアクセスとを有し、該システムキーが複数Sのビットを含み、該同報通信キーの各々が一意的な複数Bのビットを含み、BがSよりも小さく、該方法は、
(a)該複数Nの送信装置の各々が、該システムキーおよびその送信装置に一意的な該同報通信キーを所定の方法で畳み込み、その送信装置に対して一意的なデータ暗号化キーを生成するステップであって、該一意的な暗号化キーは第3数Eのビットを含み、EはBよりも少なくとも大きいステップと、
(b)該複数Nの送信装置の各々が、その送信装置において生成された該一意的なデータ暗号化キーでデータのセットを暗号化するステップと、
(c)該複数Nの送信装置の各々が、暗号化された該データのセットを該受信装置に伝送するステップと、
を含み、
該受信装置は、該システムキーおよび該同報通信キーの各々をメモリ内に記憶し、各送信装置のそれぞれにおいて該データセットを暗号化するために使用された一意的なデータ暗号化キーを、該暗号化データセットの任意の一つを解読する目的のために再生し、該受信装置において該システムキーおよび該同報通信キーを記憶するために必要なメモリ容量が、((N×B)+S)ビットより大きくない、
方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/984,461 US5341425A (en) | 1992-12-02 | 1992-12-02 | Methods and apparatus for uniquely encrypting data at a plurality of data transmission sites for transmission to a reception site |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP51348094A Division JP3789469B2 (ja) | 1992-12-02 | 1993-12-01 | データを一意的に端局暗号化するための方法及び装置 |
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Publication Number | Publication Date |
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JP2004320819A true JP2004320819A (ja) | 2004-11-11 |
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ID=25530576
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Application Number | Title | Priority Date | Filing Date |
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JP51348094A Expired - Lifetime JP3789469B2 (ja) | 1992-12-02 | 1993-12-01 | データを一意的に端局暗号化するための方法及び装置 |
JP2004234871A Pending JP2004320819A (ja) | 1992-12-02 | 2004-08-11 | データを一意的に端局暗号化するための方法及び装置 |
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JP51348094A Expired - Lifetime JP3789469B2 (ja) | 1992-12-02 | 1993-12-01 | データを一意的に端局暗号化するための方法及び装置 |
Country Status (7)
Country | Link |
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US (1) | US5341425A (ja) |
EP (1) | EP0704123A4 (ja) |
JP (2) | JP3789469B2 (ja) |
KR (1) | KR100299634B1 (ja) |
AU (1) | AU685416B2 (ja) |
CA (1) | CA2150825C (ja) |
WO (1) | WO1994013081A1 (ja) |
Families Citing this family (163)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6292568B1 (en) | 1966-12-16 | 2001-09-18 | Scientific-Atlanta, Inc. | Representing entitlements to service in a conditional access system |
US5870474A (en) | 1995-12-04 | 1999-02-09 | Scientific-Atlanta, Inc. | Method and apparatus for providing conditional access in connection-oriented, interactive networks with a multiplicity of service providers |
US7835989B1 (en) | 1992-12-09 | 2010-11-16 | Discovery Communications, Inc. | Electronic book alternative delivery systems |
US7298851B1 (en) | 1992-12-09 | 2007-11-20 | Discovery Communications, Inc. | Electronic book security and copyright protection system |
US8073695B1 (en) | 1992-12-09 | 2011-12-06 | Adrea, LLC | Electronic book with voice emulation features |
US7168084B1 (en) | 1992-12-09 | 2007-01-23 | Sedna Patent Services, Llc | Method and apparatus for targeting virtual objects |
US7849393B1 (en) | 1992-12-09 | 2010-12-07 | Discovery Communications, Inc. | Electronic book connection to world watch live |
US9286294B2 (en) | 1992-12-09 | 2016-03-15 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator content suggestion engine |
US7509270B1 (en) | 1992-12-09 | 2009-03-24 | Discovery Communications, Inc. | Electronic Book having electronic commerce features |
ATE426300T1 (de) | 1992-12-09 | 2009-04-15 | Sedna Patent Services Llc | Aufsatz-endgerat fur kabelfernsehverteilsysteme |
US9053640B1 (en) | 1993-12-02 | 2015-06-09 | Adrea, LLC | Interactive electronic book |
US7865567B1 (en) | 1993-12-02 | 2011-01-04 | Discovery Patent Holdings, Llc | Virtual on-demand electronic book |
US8095949B1 (en) | 1993-12-02 | 2012-01-10 | Adrea, LLC | Electronic book with restricted access features |
US7861166B1 (en) | 1993-12-02 | 2010-12-28 | Discovery Patent Holding, Llc | Resizing document pages to fit available hardware screens |
IL107967A (en) * | 1993-12-09 | 1996-12-05 | News Datacom Research Ltd | Apparatus and method for securing communication systems |
US5504816A (en) * | 1994-02-02 | 1996-04-02 | Gi Corporation | Method and apparatus for controlling access to digital signals |
US6744894B1 (en) | 1994-04-01 | 2004-06-01 | Mitsubishi Corporation | Data management system |
JPH07271865A (ja) | 1994-04-01 | 1995-10-20 | Mitsubishi Corp | データベース著作権管理方法 |
US7036019B1 (en) | 1994-04-01 | 2006-04-25 | Intarsia Software Llc | Method for controlling database copyrights |
JPH07283809A (ja) * | 1994-04-08 | 1995-10-27 | Mitsubishi Corp | 暗号鍵システム |
US5477263A (en) * | 1994-05-26 | 1995-12-19 | Bell Atlantic Network Services, Inc. | Method and apparatus for video on demand with fast forward, reverse and channel pause |
US5666293A (en) * | 1994-05-27 | 1997-09-09 | Bell Atlantic Network Services, Inc. | Downloading operating system software through a broadcast channel |
US5768539A (en) * | 1994-05-27 | 1998-06-16 | Bell Atlantic Network Services, Inc. | Downloading applications software through a broadcast channel |
US5734589A (en) * | 1995-01-31 | 1998-03-31 | Bell Atlantic Network Services, Inc. | Digital entertainment terminal with channel mapping |
US6701370B1 (en) * | 1994-06-08 | 2004-03-02 | Hughes Electronics Corporation | Network system with TCP/IP protocol spoofing |
US6473793B1 (en) * | 1994-06-08 | 2002-10-29 | Hughes Electronics Corporation | Method and apparatus for selectively allocating and enforcing bandwidth usage requirements on network users |
JPH09510596A (ja) * | 1994-06-08 | 1997-10-21 | エイチイー・ホールディングス・インコーポレーテッド・ディー ビーエー・ヒューズ・エレクトロニクス | ハイブリッドネットワークアクセスのための装置および方法 |
USRE38529E1 (en) | 1994-06-24 | 2004-06-08 | Sony Corporation | Scramble/descramble method and apparatus for data broadcasting |
US7302415B1 (en) | 1994-09-30 | 2007-11-27 | Intarsia Llc | Data copyright management system |
EP0709760B1 (en) | 1994-10-27 | 2006-05-31 | Intarsia Software LLC | Data copyright management system |
DE69532434T2 (de) | 1994-10-27 | 2004-11-11 | Mitsubishi Corp. | Gerät für Dateiurheberrechte-Verwaltungssystem |
US6424715B1 (en) | 1994-10-27 | 2002-07-23 | Mitsubishi Corporation | Digital content management system and apparatus |
JP3729529B2 (ja) * | 1994-10-28 | 2005-12-21 | ソニー株式会社 | デイジタル信号送受信システム |
US5652795A (en) | 1994-11-14 | 1997-07-29 | Hughes Electronics | Method and apparatus for an adapter card providing conditional access in a communication system |
US5727065A (en) | 1994-11-14 | 1998-03-10 | Hughes Electronics | Deferred billing, broadcast, electronic document distribution system and method |
GB2297017A (en) * | 1995-01-11 | 1996-07-17 | Farncombe Technology Ltd | Encryption of television services |
US6937729B2 (en) | 1995-04-03 | 2005-08-30 | Scientific-Atlanta, Inc. | Representing entitlements to service in a conditional access system |
US6560340B1 (en) | 1995-04-03 | 2003-05-06 | Scientific-Atlanta, Inc. | Method and apparatus for geographically limiting service in a conditional access system |
US6252964B1 (en) * | 1995-04-03 | 2001-06-26 | Scientific-Atlanta, Inc. | Authorization of services in a conditional access system |
US8548166B2 (en) | 1995-04-03 | 2013-10-01 | Anthony J. Wasilewski | Method for partially encrypting program data |
US6424717B1 (en) | 1995-04-03 | 2002-07-23 | Scientific-Atlanta, Inc. | Encryption devices for use in a conditional access system |
US6157719A (en) * | 1995-04-03 | 2000-12-05 | Scientific-Atlanta, Inc. | Conditional access system |
US20040136532A1 (en) * | 1995-04-03 | 2004-07-15 | Pinder Howard G. | Partial dual-encrypted stream utilizing program map tables |
US6246767B1 (en) | 1995-04-03 | 2001-06-12 | Scientific-Atlanta, Inc. | Source authentication of download information in a conditional access system |
US7224798B2 (en) * | 1995-04-03 | 2007-05-29 | Scientific-Atlanta, Inc. | Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system |
JPH08335040A (ja) * | 1995-06-02 | 1996-12-17 | Fujitsu Ltd | 暗号化処理方式 |
US8595502B2 (en) | 1995-09-29 | 2013-11-26 | Intarsia Software Llc | Data management system |
US7801817B2 (en) | 1995-10-27 | 2010-09-21 | Makoto Saito | Digital content management system and apparatus |
GB9603582D0 (en) | 1996-02-20 | 1996-04-17 | Hewlett Packard Co | Method of accessing service resource items that are for use in a telecommunications system |
US6021433A (en) * | 1996-01-26 | 2000-02-01 | Wireless Internet, Inc. | System and method for transmission of data |
US7035914B1 (en) | 1996-01-26 | 2006-04-25 | Simpleair Holdings, Inc. | System and method for transmission of data |
US6026165A (en) * | 1996-06-20 | 2000-02-15 | Pittway Corporation | Secure communications in a wireless system |
US6167426A (en) * | 1996-11-15 | 2000-12-26 | Wireless Internet, Inc. | Contact alerts for unconnected users |
US6581162B1 (en) * | 1996-12-31 | 2003-06-17 | Compaq Information Technologies Group, L.P. | Method for securely creating, storing and using encryption keys in a computer system |
JP4110588B2 (ja) * | 1997-03-19 | 2008-07-02 | ソニー株式会社 | データ受信装置および受信方法 |
JPH10301492A (ja) * | 1997-04-23 | 1998-11-13 | Sony Corp | 暗号化装置および方法、復号装置および方法、並びに情報処理装置および方法 |
JP2001513587A (ja) * | 1997-07-31 | 2001-09-04 | サイエンティフィック−アトランタ・インコーポレーテッド | 条件付きアクセスシステムにおける情報のプログラムのソースの検証 |
US7515712B2 (en) * | 1997-08-01 | 2009-04-07 | Cisco Technology, Inc. | Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system |
AU740164B2 (en) * | 1997-10-06 | 2001-11-01 | Escher Group, Ltd., The | System and method for distributing, printing and authentication of postage indicia over a network |
JP3985204B2 (ja) * | 1997-12-09 | 2007-10-03 | ソニー株式会社 | 情報放送方法、受信機、情報センタ及び受信方法 |
US6295359B1 (en) | 1998-05-21 | 2001-09-25 | Pitney Bowes Inc. | Method and apparatus for distributing keys to secure devices such as a postage meter |
JP4051510B2 (ja) * | 1998-07-16 | 2008-02-27 | ソニー株式会社 | データ記憶装置およびデータ記憶方法 |
JP4763866B2 (ja) | 1998-10-15 | 2011-08-31 | インターシア ソフトウェア エルエルシー | 2重再暗号化によりデジタルデータを保護する方法及び装置 |
US6934255B1 (en) | 1999-02-02 | 2005-08-23 | Packeteer, Inc. | Internet over satellite apparatus |
US6715077B1 (en) * | 1999-03-23 | 2004-03-30 | International Business Machines Corporation | System and method to support varying maximum cryptographic strength for common data security architecture (CDSA) applications |
US7730300B2 (en) | 1999-03-30 | 2010-06-01 | Sony Corporation | Method and apparatus for protecting the transfer of data |
US7565546B2 (en) * | 1999-03-30 | 2009-07-21 | Sony Corporation | System, method and apparatus for secure digital content transmission |
US6697489B1 (en) | 1999-03-30 | 2004-02-24 | Sony Corporation | Method and apparatus for securing control words |
US6947558B1 (en) * | 1999-08-29 | 2005-09-20 | Intel Corporation | Stream cipher having a shuffle network combiner function |
US6920221B1 (en) | 1999-08-29 | 2005-07-19 | Intel Corporation | Method and apparatus for protected exchange of status and secret values between a video source application and a video hardware interface |
US6731758B1 (en) | 1999-08-29 | 2004-05-04 | Intel Corporation | Digital video content transmission ciphering and deciphering method and apparatus |
US7039614B1 (en) | 1999-11-09 | 2006-05-02 | Sony Corporation | Method for simulcrypting scrambled data to a plurality of conditional access devices |
US7190787B1 (en) * | 1999-11-30 | 2007-03-13 | Intel Corporation | Stream cipher having a combiner function with storage based shuffle unit |
US7120139B1 (en) | 1999-12-30 | 2006-10-10 | At&T Corp. | Broadband cable telephony network architecture IP ITN network architecture reference model |
US6889321B1 (en) | 1999-12-30 | 2005-05-03 | At&T Corp. | Protected IP telephony calls using encryption |
US6671262B1 (en) | 1999-12-30 | 2003-12-30 | At&T Corp. | Conference server for automatic x-way call port expansion feature |
US6680935B1 (en) | 1999-12-30 | 2004-01-20 | At&T Corp. | Anonymous call rejection |
US6728239B1 (en) | 1999-12-30 | 2004-04-27 | At&T Corp. | Scaleable network server for low cost PBX |
US6690675B1 (en) | 1999-12-30 | 2004-02-10 | At&T Corp. | User programmable fail-proof IP hotline/warm-line |
US6826173B1 (en) | 1999-12-30 | 2004-11-30 | At&T Corp. | Enhanced subscriber IP alerting |
US6816469B1 (en) | 1999-12-30 | 2004-11-09 | At&T Corp. | IP conference call waiting |
US6633635B2 (en) | 1999-12-30 | 2003-10-14 | At&T Corp. | Multiple call waiting in a packetized communication system |
US6917610B1 (en) | 1999-12-30 | 2005-07-12 | At&T Corp. | Activity log for improved call efficiency |
US6775273B1 (en) | 1999-12-30 | 2004-08-10 | At&T Corp. | Simplified IP service control |
US6678265B1 (en) | 1999-12-30 | 2004-01-13 | At&T Corp. | Local number portability database for on-net IP call |
US6775267B1 (en) | 1999-12-30 | 2004-08-10 | At&T Corp | Method for billing IP broadband subscribers |
US7075918B1 (en) | 1999-12-30 | 2006-07-11 | At&T Corp. | BRG with PBX capabilities |
US6937713B1 (en) | 1999-12-30 | 2005-08-30 | At&T Corp. | IP call forward profile |
US7180889B1 (en) | 1999-12-30 | 2007-02-20 | At&T Corp. | Personal control of address assignment and greeting options for multiple BRG ports |
US7225164B1 (en) | 2000-02-15 | 2007-05-29 | Sony Corporation | Method and apparatus for implementing revocation in broadcast networks |
KR100327494B1 (ko) * | 2000-03-24 | 2002-03-15 | 윤종용 | 다중 접근 방식을 이용한 보안 통신 시스템에서의 키 동의방법 |
TW478273B (en) * | 2000-05-17 | 2002-03-01 | Avision Inc | Image signal transmission device |
JP2001359070A (ja) * | 2000-06-14 | 2001-12-26 | Canon Inc | データ処理装置、データ処理方法及びコンピュータ可読記憶媒体 |
US7457414B1 (en) | 2000-07-21 | 2008-11-25 | The Directv Group, Inc. | Super encrypted storage and retrieval of media programs with smartcard generated keys |
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 |
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 |
US7277543B1 (en) * | 2000-11-14 | 2007-10-02 | Honeywell International Inc. | Cryptographic combiner using two sequential non-associative operations |
US6985586B2 (en) * | 2000-12-22 | 2006-01-10 | Nagracard S.A. | Distributed information and storage system |
ITMO20010038A1 (it) * | 2001-03-06 | 2002-09-06 | Elopak Systems | Apparato e metodo per la lavorazione di materia plastica e contenitore di prodotto fluido |
US7895616B2 (en) | 2001-06-06 | 2011-02-22 | Sony Corporation | Reconstitution of program streams split across multiple packet identifiers |
US7350082B2 (en) | 2001-06-06 | 2008-03-25 | Sony Corporation | Upgrading of encryption |
US7127619B2 (en) | 2001-06-06 | 2006-10-24 | Sony Corporation | Decoding and decryption of partially encrypted information |
US7747853B2 (en) * | 2001-06-06 | 2010-06-29 | Sony Corporation | IP delivery of secure digital content |
US7103912B2 (en) * | 2001-06-29 | 2006-09-05 | International Business Machines Corporation | User authorization management system using a meta-password and method for same |
US7793326B2 (en) | 2001-08-03 | 2010-09-07 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator |
US7908628B2 (en) | 2001-08-03 | 2011-03-15 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator content coding and formatting |
EP1436943B1 (en) | 2001-09-21 | 2016-11-02 | The DIRECTV Group, Inc. | Method and apparatus for controlling paired operation of a conditional access module and an integrated receiver and decoder |
US20030099360A1 (en) * | 2001-11-28 | 2003-05-29 | Khoi Hoang | Time-based encryption key |
US7155012B2 (en) | 2002-01-02 | 2006-12-26 | Sony Corporation | Slice mask and moat pattern partial encryption |
US7376233B2 (en) | 2002-01-02 | 2008-05-20 | Sony Corporation | Video slice and active region based multiple partial encryption |
US7242773B2 (en) | 2002-09-09 | 2007-07-10 | Sony Corporation | Multiple partial encryption using retuning |
KR100993456B1 (ko) | 2002-01-02 | 2010-11-10 | 소니 일렉트로닉스 인코포레이티드 | 패킷의 부분적 복제, 암호화 및 암호 해독을 이루기 위한 장치 및 방법, 컴퓨터 판독 가능 저장 매체 |
US7215770B2 (en) | 2002-01-02 | 2007-05-08 | Sony Corporation | System and method for partially encrypted multimedia stream |
US7302059B2 (en) | 2002-01-02 | 2007-11-27 | Sony Corporation | Star pattern partial encryption |
US7823174B2 (en) | 2002-01-02 | 2010-10-26 | Sony Corporation | Macro-block based content replacement by PID mapping |
KR100978187B1 (ko) * | 2002-01-02 | 2010-08-25 | 소니 일렉트로닉스 인코포레이티드 | 시분할 부분 암호화 |
US7292690B2 (en) * | 2002-01-02 | 2007-11-06 | Sony Corporation | Video scene change detection |
US7292691B2 (en) * | 2002-01-02 | 2007-11-06 | Sony Corporation | Progressive video refresh slice detection |
US7233669B2 (en) | 2002-01-02 | 2007-06-19 | Sony Corporation | Selective encryption to enable multiple decryption keys |
US7218738B2 (en) | 2002-01-02 | 2007-05-15 | Sony Corporation | Encryption and content control in a digital broadcast system |
US7765567B2 (en) | 2002-01-02 | 2010-07-27 | Sony Corporation | Content replacement by PID mapping |
US8051443B2 (en) | 2002-01-02 | 2011-11-01 | Sony Corporation | Content replacement by PID mapping |
KR100952799B1 (ko) * | 2002-01-02 | 2010-04-14 | 소니 일렉트로닉스 인코포레이티드 | 부분적으로 암호화된 정보의 암호해독 및 디코딩 |
US7530084B2 (en) | 2002-05-28 | 2009-05-05 | Sony Corporation | Method and apparatus for synchronizing dynamic graphics |
US7486792B2 (en) * | 2002-08-23 | 2009-02-03 | General Instrument Corporation | Terrestrial broadcast copy protection system for digital television |
US7343398B1 (en) | 2002-09-04 | 2008-03-11 | Packeteer, Inc. | Methods, apparatuses and systems for transparently intermediating network traffic over connection-based authentication protocols |
US8818896B2 (en) | 2002-09-09 | 2014-08-26 | Sony Corporation | Selective encryption with coverage encryption |
US8572408B2 (en) | 2002-11-05 | 2013-10-29 | Sony Corporation | Digital rights management of a digital device |
US7724907B2 (en) | 2002-11-05 | 2010-05-25 | Sony Corporation | Mechanism for protecting the transfer of digital content |
EP1418701A1 (en) * | 2002-11-11 | 2004-05-12 | STMicroelectronics Limited | Transmission and storage of encryption keys |
US20040109567A1 (en) * | 2002-12-05 | 2004-06-10 | Canon Kabushiki Kaisha | Encryption key generation in embedded devices |
US7111322B2 (en) | 2002-12-05 | 2006-09-19 | Canon Kabushiki Kaisha | Automatic generation of a new encryption key |
US8667525B2 (en) | 2002-12-13 | 2014-03-04 | Sony Corporation | Targeted advertisement selection from a digital stream |
US8645988B2 (en) | 2002-12-13 | 2014-02-04 | Sony Corporation | Content personalization for digital content |
US7336784B2 (en) * | 2002-12-20 | 2008-02-26 | Brite Smart Corporation | Multimedia decoder method and system with authentication and enhanced digital rights management (DRM) where each received signal is unique and where the missing signal is cached inside the storage memory of each receiver |
US8068519B2 (en) * | 2002-12-20 | 2011-11-29 | Britesmart Llc | Method and system to use, share and manage digital content by assigning MAC and IP adress to each device and peripheral |
EP1604258A1 (en) * | 2003-03-11 | 2005-12-14 | Koninklijke Philips Electronics N.V. | Method and system for enabling remote message composition |
CN100592683C (zh) * | 2003-03-14 | 2010-02-24 | 皇家飞利浦电子股份有限公司 | 来自数字权利管理加密解密器的受保护的返回路径 |
US7409702B2 (en) | 2003-03-20 | 2008-08-05 | Sony Corporation | Auxiliary program association table |
US7292692B2 (en) | 2003-03-25 | 2007-11-06 | Sony Corporation | Content scrambling with minimal impact on legacy devices |
DE60317195T2 (de) * | 2003-09-08 | 2008-08-07 | Abb Research Ltd. | Datenverschlüsselung in der physikalischen Schicht eines Datenübertragungssystems |
US7286667B1 (en) | 2003-09-15 | 2007-10-23 | Sony Corporation | Decryption system |
US7620180B2 (en) | 2003-11-03 | 2009-11-17 | Sony Corporation | Preparation of content for multiple conditional access methods in video on demand |
US7853980B2 (en) | 2003-10-31 | 2010-12-14 | Sony Corporation | Bi-directional indices for trick mode video-on-demand |
US7263187B2 (en) | 2003-10-31 | 2007-08-28 | Sony Corporation | Batch mode session-based encryption of video on demand content |
US7343013B2 (en) | 2003-12-16 | 2008-03-11 | Sony Corporation | Composite session-based encryption of video on demand content |
US7346163B2 (en) | 2003-10-31 | 2008-03-18 | Sony Corporation | Dynamic composition of pre-encrypted video on demand content |
US8396216B2 (en) * | 2003-11-21 | 2013-03-12 | Howard G. Pinder | Partial dual-encryption using program map tables |
US7590243B2 (en) * | 2004-05-04 | 2009-09-15 | The Directv Group, Inc. | Digital media conditional access system for handling digital media content |
US7940746B2 (en) * | 2004-08-24 | 2011-05-10 | Comcast Cable Holdings, Llc | Method and system for locating a voice over internet protocol (VoIP) device connected to a network |
US7895617B2 (en) | 2004-12-15 | 2011-02-22 | Sony Corporation | Content substitution editor |
US8041190B2 (en) | 2004-12-15 | 2011-10-18 | Sony Corporation | System and method for the creation, synchronization and delivery of alternate content |
US7458008B2 (en) * | 2004-12-30 | 2008-11-25 | Freescale Semiconductor, Inc. | Decision voting in a parallel decoder |
US8370638B2 (en) * | 2005-02-18 | 2013-02-05 | Emc Corporation | Derivative seeds |
JP4667108B2 (ja) * | 2005-04-11 | 2011-04-06 | パナソニック株式会社 | データ処理装置 |
US20070183311A1 (en) * | 2006-02-03 | 2007-08-09 | Vlad Mitlin | Flat-spectrum and spectrum-shaped waveforms for digital communications |
US8185921B2 (en) | 2006-02-28 | 2012-05-22 | Sony Corporation | Parental control of displayed content using closed captioning |
US7555464B2 (en) | 2006-03-01 | 2009-06-30 | Sony Corporation | Multiple DRM management |
US8775319B2 (en) | 2006-05-15 | 2014-07-08 | The Directv Group, Inc. | Secure content transfer systems and methods to operate the same |
KR100881998B1 (ko) | 2007-11-22 | 2009-02-05 | 한국전자통신연구원 | 방송 콘텐츠 보호 시스템 및 그 방법 |
TW200937928A (en) * | 2008-02-20 | 2009-09-01 | Tatung Co | Method for generating one-time-password |
US8238538B2 (en) | 2009-05-28 | 2012-08-07 | Comcast Cable Communications, Llc | Stateful home phone service |
JP6834771B2 (ja) * | 2017-05-19 | 2021-02-24 | 富士通株式会社 | 通信装置および通信方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4531020A (en) * | 1982-07-23 | 1985-07-23 | Oak Industries Inc. | Multi-layer encryption system for the broadcast of encrypted information |
US4613901A (en) * | 1983-05-27 | 1986-09-23 | M/A-Com Linkabit, Inc. | Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals |
US4605820A (en) * | 1983-11-10 | 1986-08-12 | Visa U.S.A. Inc. | Key management system for on-line communication |
US4634808A (en) * | 1984-03-15 | 1987-01-06 | M/A-Com Government Systems, Inc. | Descrambler subscriber key production system utilizing key seeds stored in descrambler |
US4887296A (en) * | 1984-10-26 | 1989-12-12 | Ricoh Co., Ltd. | Cryptographic system for direct broadcast satellite system |
US4803725A (en) * | 1985-03-11 | 1989-02-07 | General Instrument Corp. | Cryptographic system using interchangeable key blocks and selectable key fragments |
US5237610A (en) * | 1990-02-01 | 1993-08-17 | Scientific-Atlanta, Inc. | Independent external security module for a digitally upgradeable television signal decoder |
US5029207A (en) * | 1990-02-01 | 1991-07-02 | Scientific-Atlanta, Inc. | External security module for a television signal decoder |
JP3080382B2 (ja) * | 1990-02-21 | 2000-08-28 | 株式会社日立製作所 | 暗号通信システム |
US5093860A (en) * | 1990-09-27 | 1992-03-03 | Motorola, Inc. | Key management system |
US5144667A (en) * | 1990-12-20 | 1992-09-01 | Delco Electronics Corporation | Method of secure remote access |
US5115467A (en) * | 1991-01-23 | 1992-05-19 | General Instrument Corporation | Signal encryption apparatus for generating common and distinct keys |
-
1992
- 1992-12-02 US US07/984,461 patent/US5341425A/en not_active Expired - Lifetime
-
1993
- 1993-12-01 AU AU57345/94A patent/AU685416B2/en not_active Ceased
- 1993-12-01 EP EP94903381A patent/EP0704123A4/en not_active Withdrawn
- 1993-12-01 WO PCT/US1993/011654 patent/WO1994013081A1/en active Application Filing
- 1993-12-01 CA CA002150825A patent/CA2150825C/en not_active Expired - Lifetime
- 1993-12-01 JP JP51348094A patent/JP3789469B2/ja not_active Expired - Lifetime
- 1993-12-01 KR KR1019950702231A patent/KR100299634B1/ko not_active IP Right Cessation
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2004
- 2004-08-11 JP JP2004234871A patent/JP2004320819A/ja active Pending
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US5341425A (en) | 1994-08-23 |
EP0704123A1 (en) | 1996-04-03 |
KR100299634B1 (ko) | 2001-10-22 |
JPH08504308A (ja) | 1996-05-07 |
EP0704123A4 (en) | 2005-02-09 |
JP3789469B2 (ja) | 2006-06-21 |
CA2150825A1 (en) | 1994-06-09 |
KR950704881A (ko) | 1995-11-20 |
WO1994013081A1 (en) | 1994-06-09 |
AU5734594A (en) | 1994-06-22 |
AU685416B2 (en) | 1998-01-22 |
CA2150825C (en) | 2004-11-30 |
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