JP5075410B2 - Television receiver and client terminal - Google Patents

Television receiver and client terminal Download PDF

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JP5075410B2
JP5075410B2 JP2006527642A JP2006527642A JP5075410B2 JP 5075410 B2 JP5075410 B2 JP 5075410B2 JP 2006527642 A JP2006527642 A JP 2006527642A JP 2006527642 A JP2006527642 A JP 2006527642A JP 5075410 B2 JP5075410 B2 JP 5075410B2
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information
personal information
management server
storage unit
key management
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JPWO2006006200A1 (en
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涼太 衞藤
順子 杉中
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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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6582—Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number
    • 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
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • 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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • 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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25866—Management of end-user data
    • H04N21/25891—Management of end-user data being end-user preferences
    • 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
    • H04N21/47—End-user applications
    • H04N21/475—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data
    • H04N21/4755—End-user interface for inputting end-user data, e.g. personal identification number [PIN], preference data for defining user preferences, e.g. favourite actors or genre
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • 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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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Graphics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)

Description

本発明は、双方向テレビ放送を視聴する人の個人情報をテレビ受像機から放送局に安全に送信したり、ホームページにアクセスする人の個人情報をクライアント端末からサイトに安全に送信したりするシステムのための双方向テレビ方式のテレビ受像機及びクライアント端末に関する。 The present invention is a system for safely transmitting personal information of a person who views an interactive television broadcast from a television receiver to a broadcasting station, or for safely transmitting personal information of a person accessing a home page from a client terminal to a site. The present invention relates to an interactive television type television receiver and a client terminal .

双方向テレビ方式においては、視聴者に対してアンケートをとったり、視聴者に物品を販売したりすることが行われている。その際に、アンケートであれば、視聴者の属性情報（性別、年令、職業など）を得たうえで、階層別に回答を分析している。物品販売であれば、販売物品の配送先となる住所氏名や支払いのためのクレジット番号などの情報を入手している。視聴者はこれらの情報を必要とされる都度、端末（通常はリモコンを使う）を操作して各情報を入力し、放送局に送信している（例えば、特許文献１参照）。   In the interactive television system, questionnaires are given to viewers and articles are sold to viewers. At that time, if it is a questionnaire, after obtaining the viewer's attribute information (gender, age, occupation, etc.), the responses are analyzed by rank. In the case of merchandise sales, information such as an address name and a credit number for payment is obtained. Whenever this information is required, the viewer operates the terminal (usually using a remote controller) to input each information and transmit it to a broadcasting station (see, for example, Patent Document 1).

また、近年、インターネット上で様々な企業・個人がホームページを使った広告宣伝活動を行うことが多くなっている。このホームページは不特定多数の人間が閲覧することができるが、企業側からするとホームページの閲覧者の属性を知ることができないために、閲覧者一人ひとりへ向けた情報の発信をすることが難しい。また、閲覧者は、個人情報を提供するのは構わないが、野放しに提供したくはなく、しかるべき管理下で個人情報を提供したい。このような状況で、従来は、各企業が自ホームページに訪れた人に属性情報を質問して、進んで回答してくれる閲覧者の属性情報に関して、自らの責任において、所定の制限の下で管理利用している。
特開平９−９８４１１号公報 In recent years, various companies / individuals on the Internet frequently conduct advertising activities using homepages. This homepage can be browsed by an unspecified number of people, but from the corporate side, it is difficult to send information to each viewer because it cannot know the attributes of the homepage viewer. Also, the viewer may provide personal information, but does not want to provide it openly, but wants to provide personal information under appropriate management. Under such circumstances, conventionally, each company asks the attribute information to the person who visited the homepage, and regarding the attribute information of the viewer who is willing to answer, it is under its own responsibility and under the prescribed restrictions. It is used for management.
JP-A-9-98411

しかし、このようなテレビの視聴者やホームページの閲覧者の属性情報を取得する方法では、個人は、新たに必要とされる度に自分の属性情報を逐一書き込む面倒があり、企業は面倒な作業をいとわない個人の属性情報を取得することができるにとどまる。   However, in such a method of acquiring attribute information of TV viewers and homepage viewers, individuals have the trouble of writing their attribute information one by one each time it is newly required, and companies are troublesome work It is only possible to acquire attribute information of individuals who are willing.

本発明は、上記問題点に鑑み、個人が逐一書き込まなくても個人の属性情報をしかるべき管理下で企業側に提供することができる双方向テレビ方式のテレビ受像機及びクライアント端末を提供することを目的とする。 In view of the above problems, the present invention provides an interactive television television receiver and a client terminal that can provide personal attribute information to a company under appropriate management even if the individual does not write them one by one. With the goal.

本発明のテレビ受像機は、鍵管理サーバから暗号化個人情報を受信する受信手段と、該受信手段によって受信した暗号化個人情報を記憶する情報記憶部と、個人情報を放送局に開示することを許可する情報開示許可信号を予め前記鍵管理サーバに送信しておいて、テレビ放送視聴に際して双方向テレビ放送上り回線を介して前記放送局に前記情報記憶部に記憶されている暗号化個人情報を送信する送信手段とを備えることを特徴とする。 The television receiver of the present invention discloses a receiving means for receiving encrypted personal information from a key management server, an information storage unit for storing the encrypted personal information received by the receiving means, and disclosing the personal information to a broadcasting station. keep in transmitting information disclosure permission signal for permitting advance to the key management server, encrypted personal information stored in the information storage unit in the broadcast station via the interactive television broadcast uplink time of the television broadcast viewing And transmitting means for transmitting.

また、本発明のクライアント端末は、鍵管理サーバから暗号化個人情報を受信する受信手段と、該受信手段によって受信した暗号化個人情報を記憶する情報記憶部と、個人情報を企業サーバに開示することを許可する情報開示許可信号を予め前記鍵管理サーバに送信しておいて、前記企業サーバが開設するホームページ閲覧に際して前記企業サーバに前記情報記憶部に記憶されている暗号化個人情報を送信する送信手段とを備えることを特徴とする。 Further, the client terminal of the present invention discloses a receiving unit that receives encrypted personal information from the key management server, an information storage unit that stores the encrypted personal information received by the receiving unit, and discloses the personal information to the company server. keep sending in advance the key management server information disclosure permission signal for permitting to transmit the encrypted personal information enterprise server is stored in the information storage unit to the enterprise server when homepage browsing to open And a transmission means.

また、前記情報記憶部は、クッキーであることで、ユーザが特にそのための操作をすることなく個人情報を企業サーバに送信することができる。   In addition, since the information storage unit is a cookie, the user can transmit personal information to the company server without any particular operation for the user.

本発明によれば、個人が逐一書き込まなくても個人の属性情報をしかるべき管理下で企業側に提供することができる。   According to the present invention, personal attribute information can be provided to a company under appropriate management even if the individual does not write it one by one.

図１は、本発明の実施例１によるテレビ受像機及び鍵管理サーバを含むシステム全体の構成を示す図である。FIG. 1 is a diagram showing a configuration of the entire system including a television receiver and a key management server according to Embodiment 1 of the present invention. 図２は、鍵管理サーバ、テレビ受像機、及び放送局の動作を説明するフローチャートである。FIG. 2 is a flowchart for explaining operations of the key management server, the television receiver, and the broadcasting station. 図３は、鍵管理サーバの情報記憶部の内容を示す図である。FIG. 3 is a diagram illustrating the contents of the information storage unit of the key management server. 図４は、本発明の実施例２によるクライアント端末及び鍵管理サーバを含むシステム全体の構成を示す図である。FIG. 4 is a diagram illustrating a configuration of the entire system including the client terminal and the key management server according to the second embodiment of the present invention. 図５は、鍵管理サーバ、クライアント端末、及び企業サーバの動作を説明するフローチャートである。FIG. 5 is a flowchart for explaining operations of the key management server, the client terminal, and the enterprise server.

以下、添付図面を参照しながら本発明を実施するための最良の形態について詳細に説明する。   The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

図１は、本発明の実施例１によるテレビ受像機及び鍵管理サーバを含むシステム全体の構成を示す図である。本システムは、鍵管理サーバ１、テレビ受像機２、及び放送局３からなる。鍵管理サーバ１は、通信部１０、ＣＰＵ部２０、及び情報記憶部３０からなる。テレビ受像機２は、通信部４０、ＣＰＵ部５０、情報記憶部６０、及びチューナ７０からなる。放送局３は、通信部８０、ＣＰＵ部９０、情報記憶部１００、及び放送設備１１０からなる。   FIG. 1 is a diagram showing a configuration of the entire system including a television receiver and a key management server according to Embodiment 1 of the present invention. This system includes a key management server 1, a television receiver 2, and a broadcasting station 3. The key management server 1 includes a communication unit 10, a CPU unit 20, and an information storage unit 30. The television receiver 2 includes a communication unit 40, a CPU unit 50, an information storage unit 60, and a tuner 70. The broadcast station 3 includes a communication unit 80, a CPU unit 90, an information storage unit 100, and a broadcast facility 110.

鍵管理サーバ１の通信部１０は、テレビ受像機２が鍵管理サーバ１にアクセスできるホームページを開設する。また、通信部１０は、放送局３と接続して、放送局３に後述する暗号解読キーなどの情報を送信する。ＣＰＵ部２０は、暗号解読キー作成手段２１、及び暗号化手段２２からなり、通信部１０及び情報記憶部３０を制御する。情報記憶部３０は、暗号解読キー３１、及び情報開示許可信号３２を記憶する。   The communication unit 10 of the key management server 1 opens a home page where the television receiver 2 can access the key management server 1. The communication unit 10 is connected to the broadcast station 3 and transmits information such as a decryption key to be described later to the broadcast station 3. The CPU unit 20 includes a decryption key creation unit 21 and an encryption unit 22 and controls the communication unit 10 and the information storage unit 30. The information storage unit 30 stores a decryption key 31 and an information disclosure permission signal 32.

テレビ受像機２の通信部４０は、鍵管理サーバ１に接続して、鍵管理サーバ１が開設するホームページにアクセスし、情報をやりとりする。また、通信部４０は、双方向テレビ放送の上り回線である電話回線などで放送局３と接続して、暗号化個人情報などの情報を放送局３に送信する。ＣＰＵ部５０は、ブラウザ手段５１、及びテレビ受信ソフト５２からなり、通信部４０、情報記憶部６０、及びチューナ７０を制御する。情報記憶部６０は、暗号化個人情報を記憶する。チューナ７０は、放送局３からの双方向テレビ放送（下り）を受信する。   The communication unit 40 of the television receiver 2 connects to the key management server 1, accesses a homepage established by the key management server 1, and exchanges information. In addition, the communication unit 40 is connected to the broadcast station 3 through a telephone line that is an uplink of interactive television broadcasting, and transmits information such as encrypted personal information to the broadcast station 3. The CPU unit 50 includes browser means 51 and television reception software 52, and controls the communication unit 40, the information storage unit 60, and the tuner 70. The information storage unit 60 stores encrypted personal information. The tuner 70 receives an interactive television broadcast (downlink) from the broadcast station 3.

放送局３の通信部８０は、鍵管理サーバ１に接続して、暗号解読キーなどの情報を受信する。また、通信部８０は、双方向テレビ放送の上り回線である電話回線などでテレビ受像機２に接続して、暗号化個人情報などの情報を受信する。ＣＰＵ部９０は、暗号解読手段９１を有し、通信部８０、情報記憶部１００、及び放送設備１１０を制御する。情報記憶部１００は、暗号解読キー１０１、及び個人情報１０２を記憶する。放送設備１１０は、双方向テレビ放送を送信する。   The communication unit 80 of the broadcasting station 3 connects to the key management server 1 and receives information such as a decryption key. The communication unit 80 receives information such as encrypted personal information by connecting to the television receiver 2 via a telephone line that is an uplink of interactive television broadcasting. The CPU unit 90 includes a decryption unit 91 and controls the communication unit 80, the information storage unit 100, and the broadcast facility 110. The information storage unit 100 stores a decryption key 101 and personal information 102. Broadcast equipment 110 transmits interactive television broadcasts.

図２は、鍵管理サーバ、テレビ受像機、及び放送局の動作を説明するフローチャートである。図３は、鍵管理サーバの情報記憶部の内容を示す図である。まず、テレビ受像機２の通信部４０は、ブラウザ手段５１によって鍵管理サーバ１のホームページにアクセスし、アンケート形式などのガイドに従って、視聴者の個人情報を鍵管理サーバ１に送信する（ステップＳ１１）。つぎに、鍵管理サーバ１の暗号解読キー作成手段２１は、個人情報に関して、例えば３つのレベルの暗号解読キー３１を作成して、受像機と対応付けて、情報記憶部３０に記憶する（図３のキー、Ｌ１、Ｌ２、Ｌ３参照）。例えば、レベル１としては、個人を特定することができないレベルの情報（年令、性別、趣味など）を暗号化し解読できるキー（Ｌ１）。レベル２としては、個人を特定する情報であるが、金銭に関係しない情報（氏名、住所、電話番号、Ｅメールアドレスなど）を暗号化し解読できるキー（Ｌ２）。レベル３としては、金銭に関係する情報（銀行口座番号、クレジット番号など）を暗号化し解読できるキー（Ｌ３）。そして、暗号化手段２２は、テレビ受像機２から受信した個人情報をその受像機に対応した暗号解読キー３１によって暗号化する（ステップＳ１２）。通信部１０は、暗号化された個人情報をテレビ受像機２に送信する（ステップＳ１３）。テレビ受像機２の情報記憶部６０は、鍵管理サーバ１から受信した暗号化個人情報を記憶する（ステップＳ１４）。ここで、視聴者がテレビ受像機２を操作することによって、通信部４０はＣＰＵ部５０に制御されて、Ａ社、Ｂ社、Ｃ社などの放送局別に所定レベルで個人情報を公開することを許可する信号を鍵管理サーバ１に送信する（ステップＳ１５）。鍵管理サーバ１の通信部１０が、テレビ受像機２から許可信号を受信すると、情報記憶部３０は、その受像機がその放送局に個人情報を公開するレベルを情報開示許可信号３２（Ｌ０〜Ｌ３）として記憶し、通信部１０は、各放送局３に対応する情報開示許可レベルの暗号解読キーをその放送局３に送信する（ステップＳ１６）。ここで、公開を許可しないレベルＬ０に対してはキーを送信せず、レベルＬ１の公開に対してはＬ１のキーを送信し、レベルＬ２の公開に対してはＬ１及びＬ２のキーを送信し、レベルＬ３の公開に対してはＬ１〜Ｌ３のすべてのキーを送信する。これによって放送局３は公開の各レベルに応じた個人情報を解読することができる。放送局３は、鍵管理サーバ１から受信した暗号解読キー１０１を情報記憶部１００にテレビ受像機２と対応づけて記憶する（ステップＳ１７）。つぎに、テレビ受像機２が放送局３の放送を視聴する際に、双方向テレビ放送の上り回線を使って情報記憶部６０に記憶している暗号化個人情報を放送局３に送信すると（ステップＳ１８）、放送局３は、受信した暗号化個人情報を、予め記憶している暗号解読キー１０１によってそのレベルに応じた範囲で解読して（ステップＳ１９）、解読した個人情報１０２を情報記憶部１００にテレビ受像機２と対応づけて記憶する（ステップＳ２０）。これにより視聴者は逐一自分の個人情報をキー入力せずに予め情報記憶部６０に記憶されている暗号化個人情報を送信する操作をするだけで、自分の意図する範囲の個人情報を放送局３に送信することができる。そして、放送局３は、視聴者の意図する範囲で視聴者の個人情報を視聴者と対応づけて取得し、記憶することができる。   FIG. 2 is a flowchart for explaining operations of the key management server, the television receiver, and the broadcasting station. FIG. 3 is a diagram illustrating the contents of the information storage unit of the key management server. First, the communication unit 40 of the television receiver 2 accesses the homepage of the key management server 1 by the browser means 51, and transmits the viewer's personal information to the key management server 1 according to a guide such as a questionnaire format (step S11). . Next, the decryption key creation means 21 of the key management server 1 creates, for example, three levels of decryption keys 31 for personal information, and stores them in the information storage unit 30 in association with the receiver (see FIG. 3 keys, see L1, L2, L3). For example, level 1 is a key (L1) that can encrypt and decrypt information (such as age, sex, hobbies, etc.) at a level that cannot identify an individual. Level 2 is information that identifies an individual, but is a key (L2) that can encrypt and decrypt information (name, address, telephone number, e-mail address, etc.) that is not related to money. Level 3 is a key (L3) that can encrypt and decrypt information related to money (bank account number, credit number, etc.). Then, the encryption means 22 encrypts the personal information received from the television receiver 2 with the decryption key 31 corresponding to the receiver (step S12). The communication unit 10 transmits the encrypted personal information to the television receiver 2 (step S13). The information storage unit 60 of the television receiver 2 stores the encrypted personal information received from the key management server 1 (step S14). Here, when the viewer operates the television receiver 2, the communication unit 40 is controlled by the CPU unit 50, and the personal information is disclosed at a predetermined level for each broadcasting station such as the company A, the company B, and the company C. Is transmitted to the key management server 1 (step S15). When the communication unit 10 of the key management server 1 receives the permission signal from the television receiver 2, the information storage unit 30 sets the level at which the receiver opens the personal information to the broadcasting station as the information disclosure permission signal 32 (L0 to L0). L3), and the communication unit 10 transmits to the broadcasting station 3 the decryption key of the information disclosure permission level corresponding to each broadcasting station 3 (step S16). Here, the key is not transmitted to the level L0 that is not permitted to be disclosed, the L1 key is transmitted to the level L1 disclosure, and the L1 and L2 keys are transmitted to the level L2 disclosure. All keys L1 to L3 are transmitted for level L3 disclosure. As a result, the broadcasting station 3 can decipher the personal information corresponding to each public level. The broadcasting station 3 stores the decryption key 101 received from the key management server 1 in the information storage unit 100 in association with the television receiver 2 (step S17). Next, when the television receiver 2 views the broadcast of the broadcast station 3, the encrypted personal information stored in the information storage unit 60 is transmitted to the broadcast station 3 using the uplink of the interactive television broadcast ( In step S18), the broadcast station 3 decrypts the received encrypted personal information within a range corresponding to the level using the decryption key 101 stored in advance (step S19), and stores the decrypted personal information 102 as information. The information is stored in the unit 100 in association with the television receiver 2 (step S20). As a result, the viewer can perform the operation of transmitting the encrypted personal information stored in the information storage unit 60 in advance without keying his / her personal information one by one. 3 can be transmitted. The broadcast station 3 can acquire and store the viewer's personal information in association with the viewer within the range intended by the viewer.

図４は、本発明の実施例２によるクライアント端末及び鍵管理サーバを含むシステム全体の構成を示す図である。本システムは、鍵管理サーバ４、クライアント端末５、及び企業サーバ６からなる。鍵管理サーバ４は、通信部２１０、ＣＰＵ部２２０、及び情報記憶部２３０からなる。クライアント端末５は、通信部２４０、ＣＰＵ部２５０、及び情報記憶部２６０からなる。企業サーバ６は、通信部２７０、ＣＰＵ部２８０、及び情報記憶部２９０からなる。   FIG. 4 is a diagram illustrating a configuration of the entire system including the client terminal and the key management server according to the second embodiment of the present invention. This system includes a key management server 4, a client terminal 5, and a company server 6. The key management server 4 includes a communication unit 210, a CPU unit 220, and an information storage unit 230. The client terminal 5 includes a communication unit 240, a CPU unit 250, and an information storage unit 260. The company server 6 includes a communication unit 270, a CPU unit 280, and an information storage unit 290.

鍵管理サーバ４の通信部２１０は、クライアント端末５が鍵管理サーバ４にアクセスできるホームページを開設する。また、通信部１０は、企業サーバ６と接続して、企業サーバ６に後述する暗号解読キーなどの情報を送信する。ＣＰＵ部２２０は、暗号解読キー作成手段２２１、及び暗号化手段２２２からなり、通信部２１０及び情報記憶部２３０を制御する。情報記憶部２３０は、暗号解読キー２３１、及び情報開示許可信号２３２を記憶する。   The communication unit 210 of the key management server 4 opens a home page where the client terminal 5 can access the key management server 4. Further, the communication unit 10 is connected to the company server 6 and transmits information such as a decryption key described later to the company server 6. The CPU unit 220 includes a decryption key creation unit 221 and an encryption unit 222, and controls the communication unit 210 and the information storage unit 230. The information storage unit 230 stores a decryption key 231 and an information disclosure permission signal 232.

クライアント端末５の通信部２４０は、鍵管理サーバ４に接続して、鍵管理サーバ４が開設するホームページにアクセスし、情報をやりとりする。また、通信部２４０は、企業サーバ６が開設するホームページにアクセスし、クッキーの機能を使って暗号化個人情報などの情報を企業サーバ６に送信する。ＣＰＵ部２５０は、ブラウザ手段２５１を有し、通信部２４０、及び情報記憶部２６０を制御する。情報記憶部２６０は、クッキー２６１のためのメモリ領域を有し暗号化個人情報を記憶する。   The communication unit 240 of the client terminal 5 connects to the key management server 4, accesses a homepage established by the key management server 4, and exchanges information. Further, the communication unit 240 accesses a homepage established by the company server 6 and transmits information such as encrypted personal information to the company server 6 using a cookie function. The CPU unit 250 includes browser means 251 and controls the communication unit 240 and the information storage unit 260. The information storage unit 260 has a memory area for the cookie 261 and stores encrypted personal information.

企業サーバ６の通信部２７０は、鍵管理サーバ４に接続して、暗号解読キーなどの情報を受信する。また、通信部２７０は、ホームページを開設してクライアント端末５のアクセスを受けて、クッキーの機能を使って暗号化個人情報などの情報を受信する。ＣＰＵ部２８０は、暗号解読手段２８１を有し、通信部２７０、及び情報記憶部２９０を制御する。情報記憶部２９０は、暗号解読キー２９１、及び個人情報２９２を記憶する。   The communication unit 270 of the company server 6 is connected to the key management server 4 and receives information such as a decryption key. In addition, the communication unit 270 establishes a home page, receives access from the client terminal 5, and receives information such as encrypted personal information using a cookie function. The CPU unit 280 includes a decryption unit 281 and controls the communication unit 270 and the information storage unit 290. The information storage unit 290 stores a decryption key 291 and personal information 292.

図５は、鍵管理サーバ、クライアント端末、及び企業サーバの動作を説明するフローチャートである。まず、クライアント端末５の通信部２４０は、ブラウザ手段２５１によって鍵管理サーバ４のホームページにアクセスし、アンケート形式などのガイドに従って、ユーザの個人情報を鍵管理サーバ４に送信する（ステップＳ２１）。つぎに、鍵管理サーバ４の暗号解読キー作成手段２２１は、実施例１と同様にして、個人情報に関して、例えば３つのレベルの暗号解読キー２３１を作成して、クライアント端末５と対応付けて、情報記憶部２３０に記憶する。そして、暗号化手段２２２は、クライアント端末５から受信した個人情報をそのクライアント端末に対応した暗号解読キー２３１によって暗号化する（ステップＳ２２）。通信部２１０は、暗号化された個人情報をクライアント端末５に送信する（ステップＳ２３）。クライアント端末５の情報記憶部２６０は、鍵管理サーバ４から受信した暗号化個人情報をクッキー２６１に記憶する（鍵管理サーバ４からクライアント端末５に暗号化個人情報を送信する際にクッキーの機能を使えば直接クッキー２６１に記憶することができる。）（ステップＳ２４）。ここで、ユーザがクライアント端末５を操作することによって、通信部２４０はＣＰＵ部２５０に制御されて、企業サーバ別に所定レベルで個人情報を公開することを許可する信号を鍵管理サーバ４に送信する（ステップＳ２５）。鍵管理サーバ４の通信部２１０が、クライアント端末５から許可信号を受信すると、情報記憶部２３０は、そのクライアント端末５がその企業サーバ６に個人情報を公開するレベルを情報開示許可信号２３２（Ｌ０〜Ｌ３）として記憶し、通信部２１０は、各企業サーバ６に対応する情報開示許可レベルの暗号解読キーをその企業サーバ６に送信する（ステップＳ２６）。これによって企業サーバ６は公開の各レベルに応じた個人情報を解読することができる。企業サーバ６は、鍵管理サーバ４から受信した暗号解読キー２９１を情報記憶部２９０にクライアント端末５と対応づけて記憶する（ステップＳ２７）。つぎに、クライアント端末５が企業サーバ６のホームページにアクセスして閲覧する際に、クッキーの機能を使ってクッキー２６１に記憶している暗号化個人情報を企業サーバ６に送信すると（ステップＳ２８）、企業サーバ６は、受信した暗号化個人情報を、予め記憶している暗号解読キー２９１によってそのレベルに応じた範囲で解読して（ステップＳ２９）、解読した個人情報１０２を情報記憶部１００にクライアント端末５と対応づけて記憶する（ステップＳ３０）。これによりユーザは逐一自分の個人情報をキー入力せずに予めクッキー２６１に記憶されている暗号化個人情報を送信する操作をするだけで（実際には単にホームページを閲覧する操作をするだけでよい。）、自分の意図する範囲の個人情報を企業サーバ６に送信することができる。そして、企業サーバ６は、ユーザの意図する範囲でユーザの個人情報をユーザと対応づけて取得し、記憶することができる。   FIG. 5 is a flowchart for explaining operations of the key management server, the client terminal, and the enterprise server. First, the communication unit 240 of the client terminal 5 accesses the homepage of the key management server 4 by the browser unit 251 and transmits the user's personal information to the key management server 4 according to a guide such as a questionnaire format (step S21). Next, the decryption key creation means 221 of the key management server 4 creates, for example, three levels of decryption keys 231 for personal information and associates them with the client terminal 5 in the same manner as in the first embodiment. The information is stored in the information storage unit 230. Then, the encryption unit 222 encrypts the personal information received from the client terminal 5 with the decryption key 231 corresponding to the client terminal (step S22). The communication unit 210 transmits the encrypted personal information to the client terminal 5 (step S23). The information storage unit 260 of the client terminal 5 stores the encrypted personal information received from the key management server 4 in the cookie 261 (the function of the cookie when transmitting the encrypted personal information from the key management server 4 to the client terminal 5). If it is used, it can be directly stored in the cookie 261.) (Step S24). Here, when the user operates the client terminal 5, the communication unit 240 is controlled by the CPU unit 250 and transmits a signal permitting the disclosure of personal information at a predetermined level for each company server to the key management server 4. (Step S25). When the communication unit 210 of the key management server 4 receives the permission signal from the client terminal 5, the information storage unit 230 indicates the level at which the client terminal 5 discloses personal information to the company server 6 as the information disclosure permission signal 232 (L0). ~ L3), and the communication unit 210 transmits the decryption key of the information disclosure permission level corresponding to each company server 6 to the company server 6 (step S26). As a result, the company server 6 can decrypt the personal information corresponding to each level of disclosure. The company server 6 stores the decryption key 291 received from the key management server 4 in association with the client terminal 5 in the information storage unit 290 (step S27). Next, when the client terminal 5 accesses and browses the home page of the company server 6, the encrypted personal information stored in the cookie 261 is transmitted to the company server 6 using the cookie function (step S28). The company server 6 decrypts the received encrypted personal information with a decryption key 291 stored in advance within a range corresponding to the level (step S29), and the decrypted personal information 102 is stored in the information storage unit 100 as a client. It is stored in association with the terminal 5 (step S30). As a result, the user simply performs an operation of transmitting the encrypted personal information stored in the cookie 261 in advance without keying his / her own personal information (actually, the user simply needs to browse the home page). ), Personal information within a range intended by the user can be transmitted to the company server 6. Then, the company server 6 can acquire and store the user's personal information in association with the user within a range intended by the user.

なお、本発明は上記実施例に限定されるものではない。   In addition, this invention is not limited to the said Example.

クライアント端末は携帯電話であってもよい。この場合、現在は携帯電話のブラウザにクッキー機能がないが、同じ機能を構築すればよい。この携帯電話はＩＰ（Internet Protocol）携帯電話であってもよい。   The client terminal may be a mobile phone. In this case, the mobile phone browser does not currently have a cookie function, but the same function may be constructed. This mobile phone may be an IP (Internet Protocol) mobile phone.

企業サーバは、法律的な企業が開設するホームページのためのサーバである必要はなく、例えば個人が開設するホームページのためのサーバなどであってもよい。   The company server does not have to be a server for a homepage established by a legal company, and may be a server for a homepage established by an individual, for example.

テレビ受像機又はクライアント端末から鍵管理サーバに、個人情報、及び、個人情報公開許可信号を送信するのに代えて、普通郵便で行ってもよい。
Instead of transmitting personal information and a personal information disclosure permission signal from the television receiver or client terminal to the key management server, it may be performed by ordinary mail.

Claims (3)

鍵管理サーバから暗号化個人情報を受信する受信手段と、
該受信手段によって受信した暗号化個人情報を記憶する情報記憶部と、
個人情報を放送局に開示することを許可する情報開示許可信号を予め前記鍵管理サーバに送信しておいて、テレビ放送視聴に際して双方向テレビ放送上り回線を介して前記放送局に前記情報記憶部に記憶されている暗号化個人情報を送信する送信手段と
を備えることを特徴とするテレビ受像機。Receiving means for receiving encrypted personal information from the key management server;
An information storage unit for storing the encrypted personal information received by the receiving means;
Keep in transmitting information disclosure permission signal for permission to disclose personal information to the broadcasting station in advance in the key management server, the information storage unit in the broadcast station via the interactive television broadcast uplink time of the television broadcast viewing Transmitter means for transmitting encrypted personal information stored in the television receiver. 鍵管理サーバから暗号化個人情報を受信する受信手段と、
該受信手段によって受信した暗号化個人情報を記憶する情報記憶部と、
個人情報を企業サーバに開示することを許可する情報開示許可信号を予め前記鍵管理サーバに送信しておいて、前記企業サーバが開設するホームページ閲覧に際して前記企業サーバに前記情報記憶部に記憶されている暗号化個人情報を送信する送信手段と
を備えることを特徴とするクライアント端末。Receiving means for receiving encrypted personal information from the key management server;
An information storage unit for storing the encrypted personal information received by the receiving means;
Sure you send personal information in advance the key management server information disclosure permission signal permitting to disclose to the enterprise server, the stored in the enterprise server in the information storage unit upon homepage browsing the enterprise server to open A client terminal comprising: transmitting means for transmitting the encrypted personal information. 前記情報記憶部は、クッキーであることを特徴とする請求項２記載のクライアント端末。The client terminal according to claim 2 , wherein the information storage unit is a cookie.
JP2006527642A 2004-07-07 2004-07-07 Television receiver and client terminal Expired - Fee Related JP5075410B2 (en)

Applications Claiming Priority (1)

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