CN101086753A - Method and system for realizing token money inter-circulation in digital copyright management - Google Patents

Abstract

The realization of token currency communication method for digital copyright management uses the RI issuing RO of controlling consumer content to the terminal, defining the type of the token currency for consumer content, with the terminal using the said RO consumer content and based on the RO designated token currency consuming the token currency of that type.It also relates to a terminal equipment and digital copyright management system.

Description

In digital copyright management, realize the method and system of token money inter-circulation

Technical field

The present invention relates to the digital copyright management technology, particularly relate to the method and system that in digital copyright management, realize token money inter-circulation.

Background technology

Perfect day by day along with network in recent years, becoming stronger day by day of terminal capability, make that many individuals begin oneself to make and share the digital content of oneself making with others, increasing people obtains the information that oneself needs by network, for example: Mp3, MTV, network books or the like, the digital content of these individual makings is the copyright managements that need that copyright is arranged.These information are when network just begins to rise and have few people's will and know copyright problem, thereby but a lot of people illegally propagate by the free information that obtains on the network and acquire an advantage, cause the people who has copyright to suffer economic loss.These people that have digital publishing rights come to realise oneself the information of needing protection, and for example the someone may wish to obtain certain expense there or wish that own works are shared and watch in a period of time from the people who watches own works.It is that it provides permission that the individual can authorize the service provider, and for example the service provider safeguards a website, and the individual uploads the works of oneself, and the people that download certain content selects and download suitable permission by this website.So invented the problem that digital copyright management has solved the network resource management copyright.

Digital copyright management (DRM, Digital Rights Management) is a copyright protection technology at digital content, thereby prevents by network and computing machine bootlegging effectively, transmit digital content.The publisher of digital content uploads to network after with encrypt digital content, the user is if use digital content, must be to rights issuer (RI, Rights Issuer) asks and obtains the permission object (RO of this digital content, Rights Object), comprise relevant key in the permission object, can be used for deciphering and obtain digital content; Comprise rights of using and service condition to content simultaneously among the RO, terminal can only satisfy under the situation of service condition according to rights of using use digital content.

In RO, also carried the specifying information that uses digital content to charge to the user,, can charge to the user, for example: press access times and charge, press charging service time etc. according to user's usage behavior by using token.In this case, terminal must be kept at local token according to the charge information consumption among the RO earlier to the token of RI request some, and for example every mistake consumed 1 token in 10 minutes.

RI after terminal is received token from a RI, is stored in this token the storage area of this RI correspondence to token acquiescence and this RI binding of terminal granting automatically at present.The RO of different RI distribution can only consume token separately, and for example the RO of RI_A distribution can only consume the token that terminal obtains from RI_A.Same content publisher (CI, Content Issuer) can authorize a plurality of RI to be that it provides RO, in this case, even several RO is for the content service of same CI, because the RI difference of distribution RO, terminal also must remove to apply for token to different RI respectively.Because the token of each RI distribution can not intercommunication, therefore, each RI is behind terminal distribution RO, and terminal all needs to carry out alternately not only increasing the processing load of terminal and RI to obtain token with corresponding RI, but also a large amount of consumption of network resources.

Summary of the invention

The invention provides a kind of method and system that in digital copyright management, realize token money inter-circulation, can not intercommunication to solve the token issued between the RI in the prior art, use terminal and RI interaction times too much to cause increasing the processing load of terminal and RI and the problem of consumption of network resources in a large number.

Side of the present invention provides following technical scheme:

A kind of method that realizes token money inter-circulation in digital copyright management comprises the following steps:

Copyright distribution device (RI) is used to control the permission object (RO) of content of consumption to the terminal distribution, and specifies the type of the token that is used for content of consumption in this RO;

Terminal is utilized the corresponding content of described RO consumption, and consumes the token of the type according to the token type of appointment among this RO.

Wherein:

The terminal consumption content takes a step forward and judges the local token whether enough the type are arranged according to the token type of appointment among the RO, and obtains the token of the type when no enough token from RI.

Terminal indicates the token type that needs to RI request token the time; Described RI indicates this token applicable to one or more token types when terminal is returned token, wherein comprise the token type that terminal indicates at least.

After terminal is received the token that RI returns, further checking RI and determining whether have in the token type that this token is suitable for need the token type that is complementary of token type, if the verification passes and the token type of coupling is arranged, this token is installed then, otherwise, abandon this token.

A kind of terminal device comprises:

Communication interface is used for and other devices communicatings;

Memory module is used to preserve token;

The digital copyright management proxy module, be used for obtaining RO by described communication interface, obtain the token of the type and be saved in the described memory module according to the token type of appointment among the RO, and carry out RO and consume the token of the type in the described memory module by the token type of this RO appointment.

A kind of copyright distribution device comprises:

Communication interface is used for communicating by letter with other devices;

Copyright distribution module is used for issuing permission object according to the request of other equipment to it, and specifies the type of the token that is used for content of consumption in this permission object;

Token distribution module is used for the token type according to the token request message appointment of other equipment, to the token of its distribution applicable to one or more token types, wherein has the token type of appointment in the request message at least.

A kind of system for numeral copyright management comprises:

The content distribution device is used to provide digital content;

The copyright distribution device is used to issue the permission object (RO) of control content of consumption, and specifies the type of the token that is used for content of consumption in this RO;

Terminal device is used for from described content distribution device request content, the token of specified type from the RO of described copyright distribution device request correspondence and this RO, and consume described content according to RO, and consume the token of the type by the token type of appointment among this RO.

Beneficial effect of the present invention is as follows:

The present invention is by specifying the token type in RO, terminal is obtained token and is consumed the token of respective type according to the token type of appointment among the RO, the RO that different RI provide can consume the token of same type, therefore, terminal as long as there is the token of enough RO specified type terminal this locality, just need not be obtained token from RI again after obtaining RO from different RI, thereby can reduce the interaction times of terminal and RI, significantly improve the efficient of terminal.Accordingly, adopt the present invention can specify the token type flexibly, can support the multiple business model.

Description of drawings

Fig. 1 is the networking synoptic diagram of system for numeral copyright management in the embodiment of the invention;

Fig. 2 is the structural representation of terminal device in the embodiment of the invention;

Fig. 3 is the structural representation of RI in the embodiment of the invention;

Fig. 4 is the process flow diagram of token money inter-circulation in the embodiment of the invention.

Embodiment

At terminal in the prior art and copyright distribution device RI (or claiming rights issuer) thus interaction times too much causes OL problem, the present invention specifies the token type in permission object RO, terminal is asked token and consumed the token of specified type to RI according to the token type of appointment among the RO.

Consult shown in Figure 1ly, the digital copyright protection system in the present embodiment comprises: content distribution device, copyright distribution device and terminal device.

Content distribution device (or claiming content publisher) is used to provide digital content, and the user can obtain encrypted digital content from the content distribution device.According to different business models, this content distribution device can be Download Server, streaming media server or broadcasting server etc.Digital content is encrypted, and can not directly use.Could use this digital content after only obtaining corresponding permission object RO.A content distribution device can be authorized the content issued rights object of one or more authority distribution devices for oneself.

The authority distribution device is responsible for providing to the user and is specified the permission object RO that the token type is arranged and provide token.

Terminal device is used for obtaining content from the content distribution device, and obtains RO from the authority distribution device of content distribution device mandate, and obtains token according to the token type of appointment among the RO from the authority distribution device.

Can finish by RI for chargeing, also can be by finishing with the separate charging center (not shown) of RI.

Consult shown in Figure 2ly, terminal device comprises communication interface, digital copyright management DRM proxy module and memory module.Described communication interface is used for and other devices communicatings, as with content distribution device and authority distribution device etc.; Described memory module is used to preserve token; Described DRM proxy module is responsible for the every operation relevant with DRM, comprises by described communication interface and obtains RO, obtains the token of the type according to the token type of appointment among the RO, resolves and carry out RO, and consumes the token of the type by the token type of this RO appointment.The DRM proxy module is saved in memory module with it after obtaining token by communication interface; When the DRM proxy module is resolved and carry out RO, read the information of token from memory module, judge whether token quantity satisfies executive condition, if token quantity is not enough, then notify RI granting some token of the same type.When consuming token in the process of carrying out, the DRM proxy module is responsible for revising token information relevant in the memory module.

In order to improve security, the data message of token can be by DRM proxy module encrypting storing, and encryption key is safeguarded by the DRM proxy module and had only the DRM agency can obtain this key.

Consult shown in Figure 3ly, RI comprises communication interface, copyright distribution module and token distribution module.Described communication interface is used for communicating by letter with other devices, as with terminal device, content distribution device and other RI etc.; Described copyright distribution module is used for issuing permission object according to the request of other equipment to it, and specifies the type of the token that is used for content of consumption in this permission object; Token distribution module is used for the token type according to the token request message appointment of terminal device, to the token of its distribution applicable to specified type.

In the present embodiment, the type of token can be a type of CI, RI or other third parties regulation.Such as, a CI can require a plurality of RI to provide RO for the digital content of its distribution, and RI when being this content distribution RO all at RO middle finger phasing token of the same type, so just guarantee that different RI can the identical token of intercommunication.

A kind ofly represent that the concrete enforcement of token type is as follows:

<o-dd:play>

<o-ex:constraint>

<oma-dd:token-based>

<oma-dd:token-constraint>count</o-dd:token-constraint>

<oma-dd:token-unit>1</o-dd:token-unit>

<oma-dd:tokens-consumed>2</o-dd:tokens-consumed>

＜xxxx:token-type〉token_xx＜/xxxx:token-type〉// the token type is token_xx

</oma-ex:token-based>

</o-ex:constraint>

</o-dd:play>

Wherein, o-dd:play represents that this terminal of play has the authority of play content, and oma-dd:token-based represents that constraint condition is based on token.Above-mentioned enforcement represents that digital content of the every broadcast of terminal need consume 2 tokens, and the token type is token_xx.

If the content of issue is not wanted the token type, then only need change token_xx in the token type into 0.

If the more than token type of digital content of issue, then can show a plurality of token types side by side, such as: the token type of the content of issue is token_xx, token_tt and token_pp, and the token quantity difference of using dissimilar tokens at every turn need consume, then represent the method for token type:

<o-dd:play>

<o-ex:constraint>

<oma-dd:token-based>

<oma-dd:token-constraint>count</o-dd:token-constraint>

<oma-dd:token-unit>1</o-dd:token-unit>

<oma-dd:tokens-consumed>50</o-dd:tokens-consumed>

<xxxx:token-type>token_xx</xxxx:token-type>

<oma-dd:tokens-consumed>30</o-dd:tokens-consumed>

<xxxx:token-type>token_tt</xxxx:token-type>

<oma-dd:tokens-consumed>40</o-dd:tokens-consumed>

<xxxx:token-type>token_pp</xxxx:token-type>

</oma-ex:token-based>

</o-ex:constraint>

</o-dd:play>

If the type of token is attribute, then a method for expressing of certain element:

<o-dd:play>

<o-ex:constraint>

<oma-dd:token-based>

<oma-dd:token-constraint>count</o-dd:token-constraint>

<oma-dd:token-unit>1</o-dd:token-unit>

<oma-dd:tokens-consumed

token-type:token_xx>50</o-dd:tokens-consumed>

</oma-ex:token-based>

</o-ex:constraint>

</o-dd:play>

If specified multiple token type among the RO, then terminal can be used the wherein token of any one token type when utilizing this RO content of consumption; Accordingly, terminal also can be asked the wherein token of any one type, also can ask wherein polytype token.

In order to manage token safely and effectively, terminal is preserved the token type that obtains in the present terminal in memory module, the quantity of every type of token, the RI of distribution token correspondence and consume the situation of token.An enforcement is as shown in the table:

The supplier	The token type	The token volume residual	The consumer	Quantity consumed
					RI_X	token_xx	0	RI_X	100
PRIVATE	50		50
				RI_Y		token_xx	50	RI_X	20
RI_Y	30

In last table, the supplier refers to provides the RI of token to terminal; The consumer refers to when terminal is used certain RO consumption digital content and consumed the token of certain type, issues the RI of this RO; PRIVATE is a reserved word, refers to and the token of supplier's binding that promptly this token can not be general, and the RO that has only the supplier to issue can consume this token.

In the embodiment of last table, copyright distribution device RI_X has issued 100 token and 100 privately owned tokens that type is token_xx to terminal, and copyright distribution device RI_Y has issued 100 tokens that type is token_xx to terminal.Terminal uses the RO of copyright distribution device RI_X distribution to consume 120 types to be the token of token_xx and the privately owned token of 50 RI_A, and the RO that uses copyright distribution device RI_Y to issue has consumed the token of 30 types as token_xx.

Being respectively the content A of same CI and B issued rights object RO_A and RO_B with copyright distribution device RI_X and copyright distribution device RI_Y is example, and the processing procedure of token money inter-circulation in the present embodiment is described, consults shown in Figure 4:

Step 400, terminal are obtained content A and B by communication interface from CI.

The DRM proxy module of step 410, terminal obtains permission object RO_A by communication interface from the copyright distribution device RI_X that CI authorizes, and indicating the token type that content of consumption A need use among the permission object RO_A is token_xx.

The DRM proxy module of step 420, terminal obtains permission object RO_B by communication interface from the copyright distribution device RI_Y that CI authorizes, and indicating the token type that content of consumption B need use among the permission object terminal RO_B is token_xx.

Step 430, terminal send the request token to RI_X.Increase the token type parameter in this message, be used to specify the token type.For example, theing contents are as follows of request message:

Type of message: token request;

Terminal identifier: Device_A;

RI identifier: TRI_X;

Token quantity: 200;

Token type: token_xx;

Random number: nonce_xxxxx;

Digital signature: XXXXXX.

After step 440, RI_X receive the request token message of terminal, the legitimacy of verification terminal and request message.Returning response message by copyright distribution device RI after verifying to terminal, and provide the token of terminal institute requested number in message, the token type is token_xx.For example, theing contents are as follows of response message:

Type of message: token response;

State: success;

Terminal identifier: Device_A;

RI identifier: RI_X;

Token quantity: 200;

Token type: token_xx;

Random number: nonce_xxxxx;

Digital signature: XXXXXX.

Step 450, terminal verify RI_X and response request after receiving token, and this token is mated, and checks whether the token type is to be token_xx; After by checking and type matching, the DRM proxy module is saved in token in the memory module.If do not match, then abandon this token by checking or type.

Step 460, user be rights of using object RO_A content of consumption A on terminal, and the DRM proxy module is according to the regulation of permission object RO_A, and consumption some and type are the token of token_xx from memory module.

Step 470, customer requirements be rights of using object RO_B content of consumption B on terminal, the DRM module is according to the token type token_xx of permission object RO_B appointment, judge local enough the type tokens that has, then consumption some and type are the token of token_xx from memory module.

In this step, if the number of tokens quantity not sufficient of the type then needs the token to copyright distribution device RI_Y request the type, its request process and aforementioned processing of asking token to copyright distribution device RI_X are in like manner.

Step 480, terminal send detailed token consumption report to RI_X, comprising the RO_B type of service of RI_Y distribution be the situation of the token of token_xx.For example, theing contents are as follows of consumption report:

Type of message: consumption report;

Terminal identifier: Device_A;

RI identifier: RI_X;

Token type: token_xx;

Consumer: RI_X;

Token quantity: 30;

Consumer: RI_Y;

Token quantity: 20;

Digital signature: XXXXXX.

Step 490, RI_X are issued RI_Y to the detailed token consumption report that sends from terminal, and go up the token quantity that different consumer consumed according to report expense is settled accounts.

In above-mentioned flow process, RI charged to the user according to the token situation that consumes of terminal reality after terminal consumption content a period of time, and need send a consumption report to RI this moment in end step 480, is used for notifying the consumption situation of RI token.In addition, RI also can charge to corresponding user when terminal is provided token, therefore, in this manner, if copyright distribution device RI_X and RI_Y do not have demands such as expense is divided into, copyright distribution device RI_X can not require that terminal provides the consumption report, does not have the processing procedure of step 480 and step 490 in the promptly above-mentioned flow process.

By above-mentioned flow process as can be known, after terminal is obtained the token that type is token_xx from copyright distribution device RI_X, when utilizing permission object RO_B content of consumption, also can use these tokens (terminal has enough the type tokens), and need not terminal obtain token alternately with copyright distribution device RI_Y once more.Like this, when different digital contents needs the token of same type, only need a RI to provide a large amount of tokens of the same type to use, thereby reduced the interaction times of terminal and RI for the different digital content.

In the present embodiment, when terminal was asked the token of specified type to RI, the token type parameter that RI returns to terminal may comprise a plurality of token types values, represents that these tokens can be public by several types, wherein must comprise the token type of terminal appointment.For example, terminal is to 100 tokens that type is token_xx of copyright distribution device RI_X application, as a result the copyright distribution device RI_X token that to return 100 types be token_xx, token_yy.After terminal was successfully installed this token, needs consumption type was that the RO of the token of token_xx can use this 100 tokens, and simultaneously, needs consumption type is that the RO of the token of token_yy also can use this 100 tokens.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (13)

1, a kind of method that realizes token money inter-circulation in digital copyright management is characterized in that, comprises the following steps:

Copyright distribution device (RI) is used to control the permission object (RO) of content of consumption to the terminal distribution, and specifies the token type of the token that is used for content of consumption in this RO;

Terminal is utilized the corresponding content of described RO consumption, and consumes the token of the type according to the token type of appointment among this RO.

2, the method for claim 1 is characterized in that, the terminal consumption content takes a step forward and judges the local token whether enough the type are arranged according to the token type of appointment among the RO, and obtains the token of the type when no enough token from RI.

3, method as claimed in claim 2 is characterized in that, terminal indicates the token type that needs to RI request token the time; Described RI indicates this token applicable to one or more token types when terminal is returned token, wherein comprise the token type that terminal indicates at least.

4, method as claimed in claim 3 is characterized in that, RI returns token to terminal and takes a step forward terminal is verified, and is being proved to be successful the back to terminal distribution token.

5, method as claimed in claim 3 is characterized in that, RI further charges to the user according to distribution token quantity after terminal is returned the token success.

6, as each described method of claim 2 to 5, it is characterized in that, after terminal is received the token that RI returns, further in the token type that checking RI and definite this token are suitable for whether the token type that is complementary with the token type that needs is arranged, if the verification passes and the token type of coupling arranged, this token then is installed, otherwise, this token abandoned.

7, the method for claim 1 is characterized in that, specifying among the described RO has multiple token type, and terminal is selected the wherein token content of consumption of any one type according to the token situation of this locality.

8, the method for claim 1 is characterized in that, this method further comprises:

Terminal sends the consumption report to RI, and indicates token type and the quantity that consumes token in this consumption report.

9, a kind of terminal device is characterized in that, comprising:

Communication interface is used for and other devices communicatings;

Memory module is used to preserve token;

The digital copyright management proxy module, be used for obtaining RO by described communication interface, obtain the token of the type and be saved in the described memory module according to the token type of appointment among the RO, and carry out RO and consume the token of the type in the described memory module by the token type of this RO appointment.

10, a kind of copyright distribution device is characterized in that, comprising:

Communication interface is used for communicating by letter with other devices;

Copyright distribution module is used for issuing permission object according to the request of other equipment to it, and specifies the type of the token that is used for content of consumption in this permission object;

Token distribution module is used for the token type according to the token request message appointment of other equipment, to the token of its distribution applicable to one or more token types, wherein has the token type of appointment in the request message at least.

11, a kind of system for numeral copyright management is characterized in that, comprising:

The content distribution device is used to provide digital content;

The copyright distribution device is used to issue the permission object (RO) of control content of consumption, and specifies the type of the token that is used for content of consumption in this RO;

Terminal device is used for from described content distribution device request content, the token of specified type from the RO of described copyright distribution device request correspondence and this RO, and consume described content according to RO, and consume the token of the type by the token type of appointment among this RO.

12, system for numeral copyright management as claimed in claim 11 is characterized in that, described terminal device comprises:

Communication interface is used for and other devices communicatings;

Memory module is used to preserve token;

The digital copyright management proxy module, be used for obtaining RO by described communication interface, obtain the token of the type and be saved in the described memory module according to the token type of appointment among the RO, and carry out RO and consume the token of the type in the described memory module by the token type of this RO appointment.

As claim 11 or 12 described system for numeral copyright management, it is characterized in that 13, described copyright distribution device comprises:

Communication interface is used for communicating by letter with other devices;

Copyright distribution module is used for issuing permission object according to the request of other equipment to it, and specifies the type of the token that is used for content of consumption in this permission object;

Token distribution module is used for the token type according to the token request message appointment of other equipment, to the token of its distribution applicable to one or more token types, wherein has the token type of appointment in the request message at least.

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