WO2005091157A1 - 認証代行方法及び配信管理装置並びに認証代行方法のプログラム - Google Patents
認証代行方法及び配信管理装置並びに認証代行方法のプログラム Download PDFInfo
- Publication number
- WO2005091157A1 WO2005091157A1 PCT/JP2005/002395 JP2005002395W WO2005091157A1 WO 2005091157 A1 WO2005091157 A1 WO 2005091157A1 JP 2005002395 W JP2005002395 W JP 2005002395W WO 2005091157 A1 WO2005091157 A1 WO 2005091157A1
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- WIPO (PCT)
- Prior art keywords
- authentication
- terminal device
- data
- content
- providing server
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0281—Proxies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0884—Network architectures or network communication protocols for network security for authentication of entities by delegation of authentication, e.g. a proxy authenticates an entity to be authenticated on behalf of this entity vis-à-vis an authentication entity
Definitions
- the present invention relates to an authentication proxy method, a distribution management device, and a program for an authentication proxy method.
- the present invention relates to an authentication proxy method and the like when a signal including data of a streaming format content is distributed to a mobile terminal device using wireless communication.
- a certain processing device for example, a computer
- the signal is transmitted (hereinafter, this signal is called a distribution request, and transmitting a distribution request is called a distribution request).
- the instruction specifically indicates a URL (Uniform Resource Locator) in which the content data is stored and the location on the network and the content distribution method (protocol (rules), etc.) are described.
- a distribution request is instructed.
- the content providing server distributes the content based on the distribution request.
- One of them is a method of distributing content in a streaming format.
- the content providing server distributes (transmits) a signal including content data in a packet format, for example, to the requesting processing device based on the distribution request.
- the processing device of the distribution request source for example, temporarily stores data included in the received signal, sequentially processes (decodes) the data, and plays back the content (this is called streaming playback).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-85084 (4 pages, FIG. 1)
- the content is transmitted to a mobile terminal device such as a mobile phone via a mobile communication network.
- a mobile terminal device such as a mobile phone
- the content may be delivered only to predetermined users. Then, in order to confirm the user's identity, the user is usually authenticated.
- RTSP as described in RFC 2326
- Real-Time Streaming Protocol has an authentication rule for user ID and password input for user authentication.
- 3GPP (3rd Generation) is currently used when distributing data signals such as contents to mobile terminal devices.
- the provisions for requesting authentication to the mobile terminal device also include data for a response to the request. There is no provision for transmitting a signal that includes the information. Even if input for authentication is required, inputting user ID and password data for each authentication is a burden on the user. And this can happen not only in the case of streaming content distribution but also in the case of accessing data in other formats.
- an object of the present invention is to obtain an authentication proxy method or the like that does not require a user to be conscious of authentication.
- an object of the present invention is to obtain a method suitable for distributing contents in a mobile communication network or the like having no standard for authentication.
- a signal including authentication data of the terminal device is generated and processed. Send to the content providing server.
- a distribution management device that manages the distribution of a signal including content data to a certain communication network is provided by a terminal device via a certain communication network. If it is determined that the transmission of a signal containing authentication data has been requested from a content providing server of another communication network in response to a distribution request of a signal containing data, the authentication of the terminal device is performed. A signal including the data is generated and transmitted to the content providing server.
- the authentication data corresponding to the terminal device, the content, or the content providing server is selected from among the authentication data stored in the storage means. Search and create a signal containing authentication data.
- a distribution management device is provided between a certain communication network and another communication network, and transmits a signal including authentication data to a terminal device on a certain communication network to another communication network.
- a signal including data for authentication of the terminal device is generated and processed and transmitted to the content providing server.
- the distribution management device is provided between a certain communication network and another communication network,
- Storage means for storing authentication data relating to one or more terminal devices; and, in response to a request for distribution of a signal including content data from the terminal device, transmitting a signal including authentication data for the terminal device from the content providing server to the content providing server.
- the storage means retrieves the authentication data corresponding to the terminal device, and sends a data processing means for generating and processing a signal including the authentication data to the content providing server. Communication means.
- the storage unit of the distribution management device stores one or a plurality of authentication data of the terminal device corresponding to the content or the content providing server, and the data processing unit stores the authentication data of the terminal device and the content. Or, search for authentication data corresponding to the content providing server.
- the content data is streaming data
- the signal including the authentication data is a signal created based on RTSP.
- a certain communication network is a mobile communication network that performs wireless communication with a mobile terminal device.
- the program of the authentication undertaking method according to the present invention is directed to requesting data for terminal device authentication from a content providing server in response to a signal distribution request including content terminal content data.
- the program of the authentication undertaking method according to the present invention searches for authentication data corresponding to the terminal device, the content or the content providing server from the authentication data stored in advance in the storage means, and executes the authentication.
- the program of the authentication undertaking method according to the present invention searches for authentication data corresponding to the terminal device, the content or the content providing server from the authentication data stored in advance in the storage means, and executes the authentication.
- a signal including authentication data of the terminal device is generated.
- the user of the terminal device determines that transmission of a signal including authentication data from the content providing server to the terminal device is requested.
- a signal including authentication data of the terminal device is generated.
- the user of the terminal device reduces the burden of inputting, without having to input items related to authentication, such as a user ID and a password.
- a device such as a distribution management device performs authentication on behalf of the terminal device.
- a signal including content data requiring authentication can be delivered to another communication network even from a content providing server. This is particularly effective for content distribution using streaming data, which makes it difficult for the content providing server to perform its own authentication mechanism.
- the distribution management device searches for the data corresponding to the terminal device from among the authentication data stored in the storage means, and replaces the terminal device with a signal including the authentication data. Is generated and transmitted to the content providing server, so that a signal including authentication data can be easily generated with the authentication data stored in advance registration or the like. At this time, if the terminal device stores content or authentication data that differs depending on the content providing server or the content providing server where the number of authentication data is not limited to one, various user IDs can be handled.
- FIG. 1 is a diagram showing a system configuration according to the first embodiment of the present invention.
- a mobile communication network 10 includes, for example, a radio base station, a radio communication control device, ) Is a telecommunications network composed of At least a signal is transmitted and received by wireless communication between the mobile terminal device 11 that is the final data signal distribution destination and the wireless base station (in the present embodiment, a data signal distribution of content is performed).
- One or more content providing servers 31 exist on the communication network 30. Each content providing server 31 stores one or a plurality of streaming format content data. The content stored and distributed based on the distribution request is distributed.
- the service network 20 is a network composed of at least a proxy device 21 and a distribution management device 22, and serves as a bridge (relay) between the mobile communication network 10 and the communication network 30 for data signal distribution. It is a telecommunications network.
- the proxy processing device 21 serves as a node between the service network 20 and the communication network 30 and, based on a distribution request transmitted from the mobile communication network 10, proxyes data signal distribution from the content providing server 31 based on a distribution request. It is a server (processing device) composed of data and the like. First, based on a distribution request from the mobile communication network 10, a distribution request is made to the content providing server 31 that stores the content data.
- the content providing server 31 when it distributes the content in a streaming format, for example, it temporarily stores the content data and then distributes the data signal to the mobile communication network 10 side. This is to buffer a delay in data signal distribution that may be caused by the traffic state of the communication network 30, for example.
- data of one or a plurality of contents can be stored (stored) in the proxy processing device 21. In such a case, the proxy processing device 21 becomes the content providing server 31 in response to the content distribution request and performs data signal distribution.
- the distribution management device 22 is provided between the mobile communication network 10 and the proxy processing device 21, and includes at least a processing unit 22A, a signal communication unit 22B, and a storage unit 22C.
- the distribution management device 22 relays the distribution request, and performs processing such as controlling the number of distribution requests so as not to increase the communication load of the mobile communication network 10 in response to the distribution request of the mobile communication network 10.
- a signal including authentication data of the mobile terminal device 11 is automatically transmitted.
- a process for generating the content and transmitting it to the content providing server 31 via the proxy processing device 21 is performed.
- a signal based on RTSP is used as a control signal used to realize distribution of the trimming format content.
- Basic authentication is used as the authentication method, and the authentication data is, for example, user ID and password data.
- the processing means 22A is configured by a computer or the like, which is generally called a server, and is a means for performing processing related to distribution of content.
- the authentication data of the mobile terminal device 11 that has made the authentication request is searched for from the authentication data of each mobile terminal device 11 stored in the storage unit 22C. Then, in accordance with the RTSP, the found authentication data is inserted at the location where the authentication information is to be inserted, and data to be transmitted as a signal together with other data is generated. Further, the processing means 22A controls each means constituting the distribution management device 22.
- the signal communication unit 22B relays a signal transmitted to the service network 20, such as a distribution request from the mobile communication network 10, a signal based on data signal distribution from the communication network 30, and the like, and the processing unit 22A
- the signal to be processed is transmitted to the processing means 22A.
- a signal for an authentication request from the content providing server 31 transmitted via the communication network 30, the proxy device 21, and the service network 20 is sent to the processing means 22A for performing data generation processing. Send.
- a signal including the data of the authentication according to the RTSP generated by the processing unit 22A is transmitted to the content providing server 31 via the service network 20.
- transmission and reception of signals between the processing means 22A and the service network 20 are all performed via the signal communication means 22B.
- the storage unit 22C stores authentication data for each mobile terminal device 11 so that the mobile terminal device 11 does not need to request a signal including authentication data.
- Authentication data is not always one for each mobile terminal device 11.
- the authentication data may be different for each content requested to be distributed, and may also be different depending on the provider of the content (the content providing server 31).
- the same authentication data of a certain mobile terminal device 11 is used for all contents.
- the user ID and the password are determined when the user subscribes to the communication service, and the password is a fixed one (information) managed by the distribution management device 22.
- the storage means 22C need not be directly connected to the processing means 22A.
- the connection may be made in an environment such as another communication network in which signals including authentication data can be transmitted and received.
- the signal communication means 22B and the storage means 22C are built in the processing means 22A.
- FIG. 2 is a diagram showing a signal flow when an authentication request is made in response to a distribution request.
- RTSP signals for negotiation of "DESCRIBE", "SETUP” and “PLAY” including control data as a distribution request and status codes of responses to those signals (status code indicating "OK” in Fig. 5) Transmission and reception with a signal containing data of "200") are performed.
- a case where a distribution request is made from a certain mobile terminal device 11 via the mobile communication network 10 will be considered.
- the processing means 22A of the distribution management device 22 determines whether a distribution request can be made based on the content distribution state at that time. Transmits a signal of "DESCRIBE", "SETUP” to the content providing server 31.
- a signal (including a status code ⁇ 401 ⁇ ) indicating an authentication request conforming to RTSP is included.
- a signal to which a WWW-Authenticate header is attached) is transmitted to the mobile terminal device 11.
- the content providing server 31 transmits a signal indicating an authentication request when both "DESCRIBE" and "SETUP" signals are transmitted.
- the processing unit 22A of the distribution management device 22 performs authentication for a certain mobile terminal device 11 from the authentication data stored in the storage unit 22C. Search for testimony data.
- the processing unit 22A specifies a certain mobile terminal device 11 based on data such as a unique number and a telephone number assigned to each mobile terminal device 11.
- the obtained authentication data is included in a signal conforming to the RTSP (signal in which the authentication data is added to the Authorization header) and transmitted to the content providing server 31.
- the data may be encoded and encrypted.
- the content providing server 31 determines that the authentication data is correct, it transmits a signal including the data of the response status code (status code ⁇ 200 ⁇ indicating "OK" in FIG. 5).
- the transmission and reception of the "TEARDOWN" signal and the response signal to the signal are performed, and the distribution of the content to the mobile terminal device 11 ends.
- a distribution request for content requiring authentication is made from a certain mobile terminal device 11, and a signal indicating an authentication request is transmitted from the content providing server 31.
- the processing unit 22A of the distribution management device 22 searches for the authentication data for the certain mobile terminal device 11 stored in the storage unit 22C, and transmits a signal including the authentication data to the content providing server 31.
- the content that requires authentication can be distributed to mobile terminal devices in a communication network where there is no provision for signals related to authentication, such as 3GPP. Further, on the mobile communication terminal 11 side, it is possible to reduce the burden of inputting without having to input authentication, such as inputting a user ID and a password.
- authentication data based on the user ID and password determined at the time of subscription or the like is retrieved from the storage unit 22C, and a signal including the data is transmitted to the content providing server 31.
- the present invention is not limited to this.
- the processing unit 22A automatically creates a user ID and a password and stores them in the storage unit 22C.
- the power described in particular for the distribution of the content is not limited to this, and may be used for authentication in the case of distributing other types of data. Can do. Therefore, the signal protocol to be used is not limited to the signal conforming to the RTSP as described in the above embodiment.
- Basic authentication is used as authentication data.
- the present invention can also be applied to authentication using Digest authentication.
- the service network 20 includes the proxy processing device 21 and the distribution request management device 22.
- the proxy processing device 21 is usually provided with aspects such as reliability of data signal distribution and security measures, but the present invention is not particularly limited to this.
- a distribution request may be made to the content providing server 31.
- the distribution request management device 22 is made independent, and the proxy processing device 21 and the distribution request management device 22 that are separated from the proxy processing device are configured by the same device.
- the communication network on which the service network 20 performs bridging is described as the mobile communication network 10 under the 3GPP environment, and data signals are distributed to the mobile terminal device 11.
- the present invention is not limited to data signal distribution to the terminal device 11.
- it can be applied to a case where data signals are distributed to a processing device (terminal device) such as a normal computer.
- FIG. 1 is a diagram showing a system configuration according to a first embodiment of the present invention.
- FIG. 2 is a diagram showing a signal flow when an authentication request is made in a distribution request. Explanation of symbols
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Information Transfer Between Computers (AREA)
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05710295.6A EP1732007A4 (en) | 2004-03-24 | 2005-02-17 | PROTOCOL SERVER METHOD FOR AUTHENTICATION, DISTRIBUTION MANAGEMENT DEVICE, AND PROBE SERVER METHOD FOR AUTHENTICATION |
US10/589,481 US20070289007A1 (en) | 2004-03-24 | 2005-02-17 | Authentication Proxy Method, Distribution Management Device, And Authentication Proxy Method Program |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-086640 | 2004-03-24 | ||
JP2004086640A JP2005275690A (ja) | 2004-03-24 | 2004-03-24 | 認証代行方法及び配信管理装置並びに認証代行方法のプログラム |
Publications (1)
Publication Number | Publication Date |
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WO2005091157A1 true WO2005091157A1 (ja) | 2005-09-29 |
Family
ID=34993897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/002395 WO2005091157A1 (ja) | 2004-03-24 | 2005-02-17 | 認証代行方法及び配信管理装置並びに認証代行方法のプログラム |
Country Status (4)
Country | Link |
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US (1) | US20070289007A1 (ja) |
EP (1) | EP1732007A4 (ja) |
JP (1) | JP2005275690A (ja) |
WO (1) | WO2005091157A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8484752B2 (en) * | 2007-11-14 | 2013-07-09 | Caterpillar Inc. | Verifying authenticity of electronic control unit code |
US8321933B2 (en) * | 2007-11-14 | 2012-11-27 | Caterpillar Inc. | Securing electronic control unit code |
EP2255499A1 (en) * | 2008-03-18 | 2010-12-01 | Alcatel Lucent | Network element for enabling a user of an iptv system to obtain media stream from a surveillance system and corresponding method |
US8402530B2 (en) * | 2010-07-30 | 2013-03-19 | Microsoft Corporation | Dynamic load redistribution among distributed servers |
EP3075099B1 (en) | 2013-11-25 | 2019-05-01 | McAfee, LLC | Secure proxy to protect private data |
CN106713253B (zh) * | 2015-11-18 | 2020-10-13 | 中兴通讯股份有限公司 | 周边感知联网中发送、接收信息的方法和装置 |
US10070316B2 (en) | 2016-06-16 | 2018-09-04 | Samsung Electronics Co., Ltd. | Permission delegation framework |
JP6954167B2 (ja) * | 2018-02-14 | 2021-10-27 | 株式会社デンソー | ネットワークシステム |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001209611A (ja) * | 2000-01-25 | 2001-08-03 | Ntt Communications Kk | 代行管理方法及びエージェント装置 |
WO2002039294A1 (fr) * | 2000-11-10 | 2002-05-16 | Ntt Docomo, Inc. | Systeme d'authentification, appareil agent d'authentification, et terminal |
JP2003258856A (ja) * | 2002-02-28 | 2003-09-12 | Fujitsu Ltd | 中継装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997015885A1 (en) * | 1995-10-25 | 1997-05-01 | Open Market, Inc. | Managing transfers of information in a communications network |
US6606663B1 (en) * | 1998-09-29 | 2003-08-12 | Openwave Systems Inc. | Method and apparatus for caching credentials in proxy servers for wireless user agents |
US6944668B1 (en) * | 2000-04-03 | 2005-09-13 | Targian Ab | System operable to identify and access information about a user |
US6859879B2 (en) * | 2000-05-26 | 2005-02-22 | International Business Machine Corporation | Method and system for secure pervasive access |
GB2362970B (en) * | 2000-05-31 | 2004-12-29 | Hewlett Packard Co | Improvements relating to information storage |
US7080147B2 (en) * | 2000-09-04 | 2006-07-18 | International Business Machines Corporation | Computer network system, computer system, method for communication between computer systems, method for measuring computer system performance, and storage medium |
US7194761B1 (en) * | 2002-01-22 | 2007-03-20 | Cisco Technology, Inc. | Methods and apparatus providing automatic client authentication |
JP3821086B2 (ja) * | 2002-11-01 | 2006-09-13 | ソニー株式会社 | ストリーミングシステム及びストリーミング方法、クライアント端末及びデータ復号方法、並びにプログラム |
-
2004
- 2004-03-24 JP JP2004086640A patent/JP2005275690A/ja active Pending
-
2005
- 2005-02-17 US US10/589,481 patent/US20070289007A1/en not_active Abandoned
- 2005-02-17 EP EP05710295.6A patent/EP1732007A4/en not_active Withdrawn
- 2005-02-17 WO PCT/JP2005/002395 patent/WO2005091157A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001209611A (ja) * | 2000-01-25 | 2001-08-03 | Ntt Communications Kk | 代行管理方法及びエージェント装置 |
WO2002039294A1 (fr) * | 2000-11-10 | 2002-05-16 | Ntt Docomo, Inc. | Systeme d'authentification, appareil agent d'authentification, et terminal |
JP2003258856A (ja) * | 2002-02-28 | 2003-09-12 | Fujitsu Ltd | 中継装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1732007A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2005275690A (ja) | 2005-10-06 |
EP1732007A1 (en) | 2006-12-13 |
US20070289007A1 (en) | 2007-12-13 |
EP1732007A4 (en) | 2014-01-01 |
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