PE20120883A1 - Metodo de manejo de informacion clave, metodo de transmision de contenido, aparato de manejo de informacion clave, aparato de manejo de licencia, sistema de transmision de contenido, y aparato terminal - Google Patents

Metodo de manejo de informacion clave, metodo de transmision de contenido, aparato de manejo de informacion clave, aparato de manejo de licencia, sistema de transmision de contenido, y aparato terminal

Info

Publication number
PE20120883A1
PE20120883A1 PE2011001736A PE2011001736A PE20120883A1 PE 20120883 A1 PE20120883 A1 PE 20120883A1 PE 2011001736 A PE2011001736 A PE 2011001736A PE 2011001736 A PE2011001736 A PE 2011001736A PE 20120883 A1 PE20120883 A1 PE 20120883A1
Authority
PE
Peru
Prior art keywords
key information
content transmission
encryption
information management
key
Prior art date
Application number
PE2011001736A
Other languages
English (en)
Inventor
Motoyuki Uchida
Koji Ishii
Toshio Kaneda
Original Assignee
Ntt Docomo Inc
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 Ntt Docomo Inc filed Critical Ntt Docomo Inc
Publication of PE20120883A1 publication Critical patent/PE20120883A1/es

Links

Classifications

    • 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
    • H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • 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
    • 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)
    • H04L9/0822—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 key encryption key
    • 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]
    • 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
    • H04L9/085—Secret sharing or secret splitting, e.g. threshold schemes
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving video stream encryption
    • 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
    • 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

Abstract

REFERIDO A UN METODO DE TRANSMISION DE CONTENIDO QUE INCLUYE: UN PASO DE CREACION DE CLAVE BASICA DE CREACION DE UNA CLAVE BASICA K1; UN PASO DE CREACION DE CLAVE DE CIFRADO DE CREACION DE UNA CLAVE DE CIFRADO Kn Y TAMBIEN DE CREACION DE CLAVES DE CIFRADO MUTUO K2 A TRAVES DE Kn-1; UN PASO DE ENCRIPTACION DE PRIMERA CLAVE DE ENCRIPTACION DE LA CLAVE DE CIFRADO MUTUO K2 CON LA CLAVE BASICA K1; UN PASO DE ENCRIPTACION DE SEGUNDA CLAVE DE ENCRIPTACION DE LAS CLAVES DE CIFRADO MUTUO K3 A TRAVES DE Kn-1 Y LA CLAVE DE CIFRADO Kn USANDO SUCESIVAMENTE LAS CLAVES K2 A TRAVES DE Kn-1; UN PASO DE ENCRIPTACION DE CONTENIDO DE ENCRIPTACION DE CONTENIDO C CON LA CLAVE DE CIFRADO Kn; UN PASO DE PRIMERA TRANSMISION DE TRANSMISION DE CONTENIDO Kn (C) Y UNA PARTE ENTRE DATOS CLAVE K1 (K2),...,Kn-1 (Kn) A UN APARATO TERMINAL 2 A TRAVES DE UNA ONDA DE TRANSMISION; Y UN PASO DE SEGUNDA TRANSMISION DE TRANSMISION DE OTRA PARTE ENTRE LOS DATOS K1 (K2),...,Kn-1 (Kn) AL APARATO TERMINAL 2 A TRAVES DE UNA RED DE COMUNICACION
PE2011001736A 2009-03-30 2010-03-11 Metodo de manejo de informacion clave, metodo de transmision de contenido, aparato de manejo de informacion clave, aparato de manejo de licencia, sistema de transmision de contenido, y aparato terminal PE20120883A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009081793A JP5255499B2 (ja) 2009-03-30 2009-03-30 鍵情報管理方法、コンテンツ送信方法、鍵情報管理装置、ライセンス管理装置、コンテンツ送信システム、及び端末装置

Publications (1)

Publication Number Publication Date
PE20120883A1 true PE20120883A1 (es) 2012-07-28

Family

ID=42936132

Family Applications (1)

Application Number Title Priority Date Filing Date
PE2011001736A PE20120883A1 (es) 2009-03-30 2010-03-11 Metodo de manejo de informacion clave, metodo de transmision de contenido, aparato de manejo de informacion clave, aparato de manejo de licencia, sistema de transmision de contenido, y aparato terminal

Country Status (7)

Country Link
US (1) US20120076300A1 (es)
JP (1) JP5255499B2 (es)
KR (1) KR20110132422A (es)
CN (1) CN102369686A (es)
BR (1) BRPI1013381A2 (es)
PE (1) PE20120883A1 (es)
WO (1) WO2010116845A1 (es)

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US9602480B2 (en) * 2012-10-26 2017-03-21 Nokia Technologies Oy Methods and apparatus for data access control
EP3207659B1 (en) * 2014-10-15 2021-03-10 Verimatrix, Inc. Securing communication in a playback device with a control module using a key contribution
WO2016115663A1 (en) 2015-01-19 2016-07-28 Nokia Technologies Oy Method and apparatus for heterogeneous data storage management in cloud computing
US10027715B2 (en) 2015-06-03 2018-07-17 Samsung Electronics Co., Ltd. Electronic device and method for encrypting content
CN106599698B (zh) * 2015-10-19 2019-09-20 腾讯科技（深圳）有限公司 一种加密图片、解密图片的方法和装置
CN108260125B (zh) * 2018-01-19 2020-09-18 北京工业大学 一种基于d2d通信的内容分发应用的密钥分发方法
US11025413B2 (en) 2018-09-04 2021-06-01 International Business Machines Corporation Securing a storage network using key server authentication
US11088829B2 (en) 2018-09-04 2021-08-10 International Business Machines Corporation Securing a path at a node
US11038671B2 (en) 2018-09-04 2021-06-15 International Business Machines Corporation Shared key processing by a storage device to secure links
US11038698B2 (en) 2018-09-04 2021-06-15 International Business Machines Corporation Securing a path at a selected node

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US4780905A (en) * 1984-11-26 1988-10-25 Nightwatch, Inc. Computer data encryption system
US5764772A (en) * 1995-12-15 1998-06-09 Lotus Development Coporation Differential work factor cryptography method and system
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Also Published As

Publication number Publication date
JP2010239174A (ja) 2010-10-21
KR20110132422A (ko) 2011-12-07
US20120076300A1 (en) 2012-03-29
WO2010116845A1 (ja) 2010-10-14
CN102369686A (zh) 2012-03-07
JP5255499B2 (ja) 2013-08-07
BRPI1013381A2 (pt) 2016-03-29

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