KR20000060715A - Copyright protection apparatus and method for multimedia transmission system - Google Patents

Copyright protection apparatus and method for multimedia transmission system Download PDF

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KR20000060715A
KR20000060715A KR1019990009260A KR19990009260A KR20000060715A KR 20000060715 A KR20000060715 A KR 20000060715A KR 1019990009260 A KR1019990009260 A KR 1019990009260A KR 19990009260 A KR19990009260 A KR 19990009260A KR 20000060715 A KR20000060715 A KR 20000060715A
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private key
user
client
copyright protection
music
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KR100700508B1 (en
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차건업
박재범
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구자홍
엘지전자 주식회사
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/12—Payment architectures specially adapted for electronic shopping systems
    • G06Q20/123—Shopping for digital content
    • G06Q20/1235—Shopping for digital content with control of digital rights management [DRM]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • G06Q50/18—Legal services
    • G06Q50/184—Intellectual property management
    • 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
    • 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
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content

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  • General Physics & Mathematics (AREA)
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  • Technology Law (AREA)
  • Databases & Information Systems (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
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Abstract

PURPOSE: A CONSTITUTION: A

Description

멀티미디어 전송시스템의 저작권 보호 장치 및 방법{COPYRIGHT PROTECTION APPARATUS AND METHOD FOR MULTIMEDIA TRANSMISSION SYSTEM}Copyright protection apparatus and method of multimedia transmission system {COPYRIGHT PROTECTION APPARATUS AND METHOD FOR MULTIMEDIA TRANSMISSION SYSTEM}

본 발명은 인터넷이나 통신망 상에서 저작권자의 권리를 보다 확실하게 보호하는 기술에 관한 것으로, 특히 퍼블릭키이와 프라이베이트 키이를 이용하여 사용자를 인증하고 인터넷이나 통신망 상에서 그 인증된 사용자에 한하여 멀티미디어 콘텐츠를 제공받을 수 있도록한 멀티미디어 전송시스템의 저작권 보호 장치 및 방법에 관한 것이다.The present invention relates to a technology to more securely protect the rights of copyright holders on the Internet or a communication network, and in particular, authenticates a user using a public key and a private key and receives multimedia contents only for the authorized user on the Internet or a communication network. The present invention relates to an apparatus and method for protecting copyright of a multimedia transmission system.

종래기술에 의한 멀티미디어 전송 시스템에 있어서는 사용자를 인증하는 기술이 확립되어 있지 않아 인터넷이나 통신망 상에서 유통되는 MPEG 파일이나 MP3 파일등이 저작권자의 허락없이 불법적으로 유출되는 경우가 빈번히 발생되었다.In the multimedia transmission system according to the prior art, a technique for authenticating a user has not been established, so that MPEG files or MP3 files distributed on the Internet or a communication network are frequently leaked illegally without the permission of the copyright holder.

이와 같이 종래기술에 의한 종래기술에 의한 멀티미디어 전송 시스템에 있어서는 합법적으로 사용자를 인증하는 기술이 확립되어 있지 않아 저작권자의 권리를 확실하게 보호할 수 없게 되고, 이로인하여 인터넷이나 통신망 상에서 건전한 상거래 문화를 정착시키는데 어려움이 있었다.As described above, in the conventional multimedia transmission system according to the prior art, a technology for authenticating a user is not established legally so that the rights of copyright holders cannot be protected reliably, thereby establishing a sound commerce culture on the Internet or a communication network. There was a difficulty.

따라서, 본 발명이 이루고자 하는 기술적 과제는 퍼블릭 키이(Public Key)와 프라이베이트 키이(Private Key)를 이용하여 합법적인 사용자를 인증하고, 그 인증된 사용자가 요구하는 멀티미디어 콘텐츠(예: MP3파일)가 통신망 상에서 불법적으로 유출되는 것을 방지하는 멀티미디어 전송시스템의 저작권 보호 장치 및 방법을 제공함에 있다.Accordingly, a technical problem of the present invention is to authenticate a legitimate user by using a public key and a private key, and to provide multimedia content (eg, an MP3 file) required by the authenticated user. An object of the present invention is to provide an apparatus and method for protecting copyright of a multimedia transmission system that prevents illegal leakage on a communication network.

도 1은 본 발명에 의한 저작권 보호 장치의 일실시 예시도.1 is an exemplary embodiment of a copyright protection device according to the present invention.

도 2는 본 발명에 의한 저작권 보호 장치의 상세 블록도.2 is a detailed block diagram of a copyright protection device according to the present invention;

도 3은 본 발명에 의한 저작권 보호 방법의 신호 흐름도.3 is a signal flow diagram of a copyright protection method according to the present invention;

***도면의 주요 부분에 대한 부호의 설명****** Description of the symbols for the main parts of the drawings ***

11 : 뮤직아이 서버 12 : 저작권자 데이터베이스11: music eye server 12: copyright holder database

13 : 뮤직아이 클라이언트 14 : 뮤직 데이터베이스13: music eye client 14: music database

15,16 : 사용자 클라이언트15,16: User Client

도 1은 본 발명의 목적을 달성하기 위한 멀티미디어 전송시스템의 저작권 보호장치의 일실시 예시 블록도로서 이에 도시한 바와 같이, 저작권자 데이터베이스(12)에 구매사실을 통보함과 아울러 자체적으로 구매상황을 관리하고, 저작권자 권리보호를 위해 프라이베이트 키이를 관리하는 뮤직아이 서버(MUSIC-i Server)(11)와; 사용자 클라이언트(15)로부터 구매요구가 있을 때 상기 뮤직아이 서버(11)로부터 사용자 인증과 함께 프라이베이트 키이를 부여받은 후, 뮤직 데이터베이스(14)로부터 읽어온 해당 뮤직파일과 함께 그 프라이베이트 키이를 암호화 처리하여 다운로드하는 뮤직아이 클라이언트(MUSIC-i Client)(13)와; 상기 뮤직아이 클라이언트(13)로부터 공급받은 소프트웨어 형태의 플레이어와, 퍼블릭키이와 쌍을 이루는 프라이베이트 키이를 이용하여 그 뮤직아이 클라이언트(13)로부터 다운로드받은 뮤직파일(예: MP3파일)을 재생출력하거나, 다시 휴대형 플레이어측으로 다운로드하는 사용자 클라이언트(15)로 구성한 것으로, 이와 같이 구성한 본 발명의 작용을 첨부한 도 2를 참조하여 상세히 설명하면 다음과 같다.FIG. 1 is a block diagram illustrating an example of a copyright protection device of a multimedia transmission system for achieving the object of the present invention. As shown in FIG. A music eye server (MUSIC-i Server) 11 for managing a private key for copyright protection; When the purchase request from the user client 15 is received, the private key is received from the music eye server 11 together with user authentication, and the private key is encrypted together with the corresponding music file read from the music database 14. A music eye client (MUSIC-i Client) 13 for processing and downloading; By using the player in the form of software supplied from the music eye client 13 and the private key paired with the public key, a music file (for example, an MP3 file) downloaded from the music eye client 13 is reproduced or output. In addition, the present invention will be described in detail with reference to FIG. 2 attached to the operation of the present invention configured as a user client 15 downloaded to the portable player.

사용자 클라이언트(15)가 합법적으로 파일을 공급받기 위해서는 인증을 받아야 한다. 이를 위해 뮤직아이 클라이언트(13)는 뮤직아이 서버(11)측으로부터 사용자 인증을 받고, 이때 그 뮤직아이 서버(11)로부터 퍼블릭 키이와, 그 퍼블릭 키이와 쌍을 이루는 프라이베이트 키이(Pr_key)를 공급받는다.The user client 15 must be authenticated in order to legally supply the file. To this end, the music eye client 13 receives user authentication from the music eye server 11 side, and at this time, the music eye server 11 supplies a public key and a private key paired with the public key Pr_key. Receive.

또한, 상기 뮤직아이 클라이언트(13)는 사용자 클라이언트(15)가 요구한 뮤직파일을 뮤직 데이터베이스(14)로부터 읽어온 다음 소프트웨어 플레이어와 함께 퍼블릭 키이(Pr_key)로 함호화 하여 그 사용자 클라이언트(15)측으로 다운로드 한다. 이때, 상기 프라이베이트 키이(Pr_key)는 상기 소프트웨어 플레이어에 삽입하여 다운로드하게 되며, 필요에 따라 별도로 다운로드할 수도 있다.In addition, the music eye client 13 reads the music file requested by the user client 15 from the music database 14 and then encodes the music file together with the software player as a public key Pr_key to the user client 15. Download it. At this time, the private key Pr_key is inserted into the software player and downloaded, and may be downloaded separately as necessary.

사용자 클라이언트(15)는 상기 뮤직아이 클라이언트(13)로부터 다운로드 받은 소프트웨어 플레이어를 상기 프라이베이트 키이(Pr_key)로 해독하여 목적한 뮤직파일의 음악을 감상할 수 있게 된다.The user client 15 may decrypt the software player downloaded from the music eye client 13 with the private key Pr_key to listen to the music of the desired music file.

상기 사용자 클라이언트(15)의 일실시예로써 개인용 컴퓨터(PC)를 들 수 있는데, 이의 작용을 도 2를 참조하여 좀더 상세히 설명하면 다음과 같다.An embodiment of the user client 15 may be a personal computer (PC), which will be described in more detail with reference to FIG. 2 as follows.

피씨(22)는 인터넷(21)을 통해 상기 뮤직아이 클라이언트(13)로부터 상기의 설명에서와 같이 소프트웨어 플레이어(26)를 공급받는다. 그 소프트웨어 플레이어(26)에서 MCP(MCP:Multimedia Copyright Protection) 디코더(26A)는 프라이베이트 키이(Pr_key)를 이용하여 MP3 파일(26B)를 복원하고, 그 복원된 MP3 파일(26B)이 MP3 디코더(26C)를 통해 원래의 음악파일로 복원된다. 따라서, 사용자는 자기가 요청한 뮤직파일을 피씨(22)를 통해 감상할 수 있게 된다.The PC 22 is supplied with the software player 26 from the music eye client 13 via the Internet 21 as described above. In the software player 26, an MCP (Multimedia Copyright Protection) decoder 26A restores the MP3 file 26B using the private key Pr_key, and the restored MP3 file 26B is used as an MP3 decoder ( 26C) will restore the original music file. Accordingly, the user can listen to the music file requested by the PC 22.

한편, 상기 피씨(22)에서 휴대형 플레이어(23)측으로 다운로드할 때 내부의 암호화기(24A)를 이용하여 멀티미디어 콘텐츠 예를 들어 뮤직파일을 암호화 처리하여 다운로드하게 되며, 반대로 그 휴대형 플레이어(23)로부터 업로딩되는 뮤직파일은 해독기(24B)를 통해 해독한 후 MCP 미디어(25) 및 소프트웨어 플레이어(26)를 통해 재생출력하게 된다.On the other hand, when downloading from the PC 22 to the portable player 23 side, the multimedia content, for example, music files are encrypted using the internal encryptor 24A and downloaded, and vice versa from the portable player 23. The uploaded music file is decrypted by the decoder 24B and then reproduced by the MCP media 25 and the software player 26.

이상에서 상세히 설명한 바와 같이, 본 발명은 퍼블릭 키이와 프라이베이트 키이를 이용하여 합법적인 사용자를 인증하고, 그 인증된 사용자가 요구한 멀티미디어 콘텐츠를 그 프라이베이트 키이를 이용하여 재생출력할 수 있게 함으로써 저작권자의 권리를 확실하게 보호할 수 있는 효과가 있다.As described in detail above, the present invention provides a copyright holder by authenticating a legitimate user using a public key and a private key, and reproducing and outputting multimedia content requested by the authenticated user using the private key. It has the effect of reliably protecting your rights.

Claims (5)

저작권자 데이터베이스와 연계하여 구매정보를 관리하고, 저작권자 권리보호를 위해 프라이베이트 키이를 관리하는 서버와; 사용자 클라이언트로부터 구매요구가 있을 때 상기 서버로부터 사용자 인증과 함께 프라이베이트 키이를 부여받은 후, 데이터베이스로부터 읽어온 해당 멀티미디어 콘텐츠와 함께 그 프라이베이트 키이를 암호화 처리하여 다운로드하는 인증대행 클라이언트와; 상기 인증대행 클라이언트로부터 공급받은 소프트웨어 형태의 플레이어와 프라이베이트 키이를 이용하여, 다운로드받은 멀티미디어 콘텐츠를 재생출력하는 사용자 클라이언트로 구성한 것을 특징으로 하는 멀티미디어 전송시스템의 저작권 보호 장치.A server for managing purchase information in association with a copyright holder database and managing a private key for protecting copyright holder rights; An authentication agent client that receives a private key with user authentication from the server when a purchase request is made from a user client, and encrypts and downloads the private key with the corresponding multimedia content read from a database; And a user client for playing and outputting the downloaded multimedia content by using a software player and a private key supplied from the authentication agent client. 제1항에 있어서, 프라이베이트 키이는 소프트웨어 프로그램에 내장시켜 다운로드하는 것을 특징으로 하는 멀티미디어 전송시스템의 저작권 보호 장치.The copyright protection device of a multimedia transmission system according to claim 1, wherein the private key is downloaded in a software program. 제2항에 있어서, 소프트웨어 프로그램은 내부의 MCP 디코더에서 상기 프라이베이트 키이로 멀티미디어 콘텐츠를 해독하는 것을 특징으로 하는 멀티미디어 전송시스템의 저작권 보호 장치.The copyright protection apparatus of claim 2, wherein the software program decrypts the multimedia content with the private key in an internal MCP decoder. 사용자 인증요구가 있을 경우 퍼블릭키이 및 프라이베이트키이를 생성하는 단계와; 상기 프라이베이트키이를 사용자가 원하는 매체를 재생할 수 있는 프로그램에 내장시키는 단계와; 상기 프라이베이트키이를 내장한 상기 프로그램을 사용자측에 다운로드하는 단계와; 상기 사용자가 원하는 매체를 퍼블릭키이를 사용하여 암호화하여 전송하는 단계로 이루어진 것을 특징으로 하는 멀티미디어 전송시스템의 저작권 보호 방법.Generating a public key and a private key when a user authentication request is made; Embedding the private key into a program capable of playing a medium desired by a user; Downloading the program containing the private key to a user side; And encrypting and transmitting the media desired by the user using a public key. 제4항에 있어서, 상기 프로그램은 내장된 프라이베이트 키이로 전송받을 매체를 해독하는 MCP 디코더와 해당 매체를 재생하기 위한 디코더를 포함하여 이루어진 것을 특징으로 하는 멀티미디어 전송시스템의 저작권 보호 방법.The copyright protection method of claim 4, wherein the program comprises an MCP decoder for decrypting a medium to be transmitted with an embedded private key and a decoder for playing the medium.
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