CN102467711A - Digital copyright management transaction system - Google Patents
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- CN102467711A CN102467711A CN2010105553296A CN201010555329A CN102467711A CN 102467711 A CN102467711 A CN 102467711A CN 2010105553296 A CN2010105553296 A CN 2010105553296A CN 201010555329 A CN201010555329 A CN 201010555329A CN 102467711 A CN102467711 A CN 102467711A
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Abstract
The invention relates to a digital copyright management transaction system comprising a digital certificate server, a digital copyright management server and a digital copyright control module. The digital copyright management server is used for generating a digital content private key and an authority private key, wherein the digital content private key is used for encrypting a digital content file and generating an encrypted digital content file, and the authority private key is used for encrypting the digital content private key and generating an encrypted digital content private key; then the authority private key is encrypted through a digital certificate public key to generate an encrypted authority private key; and the encrypted digital content file and the attribute of the digital content file are packaged to a digital content package file, and then the digital content package file together with a permission file is transmitted to an electronic commerce website for downloading and reverse decryption so as to read the digital content file. In this way, the digital copyright management transaction system can better protect the digital content file so as to prevent the digital content file from being cracked and copied for spread.
Description
Technical field
The present invention relates to a kind of digital copyright management transaction system, particularly relate to a kind of through encryption and decryption technology and rights of using shelves digital copyright management transaction system with the digital content shelves that adequately protect.
Background technology
Along with popularizing of the Internet; The digital content industry is also flourish thereupon; Books, music CD, image and sound optical disk and newspaper etc. that past is peddled with the entity channel reduce gradually, the substitute is the virtual storefront that is set up in the Internet, and the digital content product that it sold; Also become more diversified, the commodity that the entity channel can sell can sell in virtual storefront.And; Because virtual channel need not paid expensive StoreFront rent with respect to the entity channel; Only need pay a little expense and just can set up the website, virtual shop or charter the virtual network StoreFront to the dealer of system and can do business, therefore attract many people starting an undertaking or the part-time network commodity that sell on the Internet.
Yet selling of network commodity all exists a kind of uncertainty to network selling dealer or consumer.With regard to the network commodity of entity, the consumer is afraid of to have bought the flaw commodity or has paid money and do not take commodity.Relative, the network selling dealer is afraid of that the random return of goods of consumer cause the increase of its selling cost and the risk on the commodity stocks.With regard to non-physical network commodity; The commodity of digital content for example; The consumer is afraid of that the digital content bought is not that he wants to see or wants to listen, waste for no reason a consumption, again because the digital content of electronization is easy to be replicated with regard to present network technology, forges, revises or destroys; So the digital content commodity that the network selling dealer more is afraid of to be peddled are by massive duplication, and cause the coml heavy losses.
For fear of having the inclination personage's illegal access or duplicate digital commodities and cause the coml loss; In TaiWan, China patent I315629 number, disclosed a kind of " digital copyright management records handling system and method ", wherein digital copyright management records handling system includes: a playing device and a process software.This handles software package and has drawn together an authorise downloads module, mandate modular converter, a deciphering module and an encrypting module.Wherein, the authorise downloads module is in order to download one first mandate data to a computing machine from an authorization server.Authorizing modular converter is one second mandate data in order to change the first mandate data.Deciphering module is in order to decipher one first digital copyright management archives by the golden key of first deciphering, to obtain source book shelves.Encrypting module is one second digital copyright management archives in order to encrypt golden key encryption source book shelves by one second.Playing device is then deciphered the second digital copyright management archives according to the second mandate data.
Above-mentioned preceding case is by with the digital content product encipherment protection; For example content of multimedia such as music, image, film and e-book utilize digital copyright management technology (digital rights management; DRM) encryption becomes a kind of digital copyright management archives (DRM file), and with propagation or broadcast safely on computing machine, portable apparatus or network equipment, yet its cipher mode is with the present network technology; Still tight inadequately; Its risk that is cracked is still very big, for digital commodities are sold the dealer, also is not a preferable solution.Therefore, how to provide the cipher mode that more effectively reaches safety, avoid the digital content archives to be destroyed and to duplicate with protection digital content commodity, real in needing the problem of solution at present badly.
This shows that above-mentioned existing digital copyright management transaction system obviously still has inconvenience and defective, and demands urgently further improving in structure and use.In order to solve the problem of above-mentioned existence; Relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly; But do not see always that for a long time suitable design is developed completion, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of new Digital copyright management transaction system, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to; Overcome the defective that existing digital copyright management transaction system exists; And put forward a kind of new Digital copyright management transaction system, technical matters to be solved is that it can be produced a digital content private key and produce an authority private key at random and come the encrypted digital content private key when the consumer buy the digital content shelves; Use the digital certificate PKI to come the Encryption permissions private key again; So as to reaching the effect of strengthening protection digital content shelves, be cracked and duplicate and disseminate to prevent the digital content shelves, be very suitable for practicality.
Another object of the present invention is to; A kind of new Digital copyright management transaction system is provided, and technical matters to be solved is that it can be proofreaied and correct with the advanced line time of digital rights management service device the user when its electronic equipment is opened the digital content shelves; Prolong user's Use Limitation to prevent the user from changing the system time of electronic equipment without authorization; Therefore can prevent effectively that the digital content shelves from being abused, and influence the rights and interests of digital content publisher, thereby be suitable for practicality more.
The object of the invention and solve its technical matters and adopt following technical scheme to realize.A kind of digital copyright management transaction system according to the present invention's proposition; It is to link an e-commerce website to publish or to buy the digital content shelves with copyright protection at user end through an electronic equipment; This digital copyright management transaction system comprises: a digital certificate server; Produce a disclosed digital certificate PKI and user's private key, wherein this digital certificate PKI and this user's private key are a pair of asymmetric golden key; One digital rights management service device; It is provided with a digital rights management module; This digital rights management module comprises: an encryption/decryption element, and it produces a digital content private key, to encrypt these digital content shelves and to produce encrypted digital content shelves; And produce an authority private key at random to encrypt this digital content private key and to produce an encrypted digital content private key, make this authority private key of this digital certificate public key encryption to produce an Encryption permissions private key again; One rights of using generation unit, it makes this encrypted digital content private key, this Encryption permissions private key and rights of using describe composition one rights of using shelves and its content is done a digital signature; One digital content encapsulation unit, it makes the attribute kit of these encrypted digital content shelves and these digital content shelves dress up digital content encapsulation shelves; One transmit receive unit, it transmits these rights of using shelves and this digital content encapsulates shelves to this e-commerce website, downloads and reads for this electronic equipment of this user's end; An and digital publishing rights control module; Itself and a browse unit are coupled and are stored in this electronic equipment; This digital publishing rights control module comprises: a data storage unit; After downloading these rights of using shelves and this digital content encapsulation shelves, this data storage unit makes these rights of using shelves and this digital content encapsulation shelves install and be stored in this electronic equipment; One authority processing unit; After these rights of using shelves are installed; This authority processing unit reads the rights of using of these rights of using shelves after the installation and handles this rights of using shelves, wherein handles these rights of using shelves and comprises whether this digital signature of checking and inspection have the rights of using of digital content; One encapsulation shelves processing unit, it is through after the inspection of rights of using, handles this digital content encapsulation shelves, to take out the attribute of these encrypted digital content shelves and these digital content shelves; An and decrypting device; It is with this this Encryption permissions private key of user's private key deciphering; To obtain this original authority private key, again with this this encrypted digital content private key of authority private key deciphering, to obtain this original digital content private key; Again with these these encrypted digital content shelves of digital content private key deciphering, to obtain these digital content shelves of purchase.
The object of the invention and solve its technical matters and also can adopt following technical measures further to realize.
Aforesaid digital copyright management transaction system, wherein said digital certificate PKI is disclosed in this e-commerce website after generation.
Aforesaid digital copyright management transaction system, wherein said user's private key are obtained and are stored by this electronic equipment of this user's end after generation.
Aforesaid digital copyright management transaction system, wherein said digital content encapsulation unit further are packaged in these rights of using shelves in these digital content encapsulation shelves again.
Aforesaid digital copyright management transaction system; Wherein said digital content encapsulation shelves are when being sent to this electronic equipment and carrying out this browse unit; This encapsulation shelves processing unit takes out these rights of using shelves earlier; Judged whether the rights of using of these digital content shelves again by this authority processing unit, if rights of using are arranged, this encapsulation shelves processing unit then takes out the attribute of these encrypted digital content shelves and these digital content shelves.
Aforesaid digital copyright management transaction system; Wherein said digital rights management module further comprises: a preparatory encryption and decryption subelement; It is to produce a preliminary encryption key when publishing these digital content shelves in publisher at random, encrypting these digital content shelves and to produce preparatory encrypted digital content shelves, when the user when this user holds these digital content shelves of purchase; Then, supply this encryption/decryption element to read to obtain these digital content shelves with these preliminary these preparatory encrypted digital content shelves of encryption key deciphering.
Aforesaid digital copyright management transaction system, another and upload preview shelves when wherein this publisher publishes these digital content shelves to this e-commerce website.
These preview shelves that aforesaid digital copyright management transaction system, wherein said digital content encapsulation unit further will have been uploaded are packaged in these digital content encapsulation shelves.
Aforesaid digital copyright management transaction system, wherein said digital content encapsulation unit further are packaged in these rights of using shelves in these digital content encapsulation shelves again.
Aforesaid digital copyright management transaction system; Wherein when described digital content encapsulation shelves are sent to this electronic equipment and carry out this browse unit; This encapsulation shelves processing unit takes out these rights of using shelves earlier; Judge the rights of using whether these digital content shelves are arranged in these rights of using shelves by this authority processing unit again, if rights of using are arranged, this encapsulation shelves processing unit then takes out the attribute of these encrypted digital content shelves and these digital content shelves.
Aforesaid digital copyright management transaction system, when wherein said authority processing unit was judged the rights of using of not having these digital content shelves in these rights of using shelves, this encapsulation shelves processing unit then took out attribute and this preview shelves of these digital content shelves.
Aforesaid digital copyright management transaction system; It is with the represented rights of using of copyright description language that wherein said rights of using are described, and has comprised up to time, access times, has used and just detaining access times, term of life and accumulative hours above after a period of time.
Aforesaid digital copyright management transaction system, the attribute of wherein said digital content shelves comprises file name, type, publisher, publication date and copyright owner.
Aforesaid digital copyright management transaction system, wherein said digital publishing rights control module further comprises a time correcting unit, this time adjustment unit is when carrying out this browse unit and this digital rights management service device is linked up, to carry out time adjustment.
Aforesaid digital copyright management transaction system; The time adjustment that wherein said time adjustment unit carries out is meant that this electronic equipment and this digital rights management service device carry out system time and check; If its system time is variant, then the system time of this electronic equipment is proofreaied and correct.
Aforesaid digital copyright management transaction system, wherein said browse unit comprise web browser, music program, e-book reading program or movie program.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, digital copyright management transaction system of the present invention has advantage and beneficial effect at least:
One, the present invention by the digital rights management service device the user when e-commerce website is bought the digital content shelves; Produce a digital content private key and produce an authority private key at random and come the encrypted digital content private key; Download disclosed digital certificate PKI from e-commerce website again and come the Encryption permissions private key; With digital signature by protection of the multi-enciphering of digital content private key, authority private key and digital certificate PKI and rights of using shelves; Strengthening the protection of digital content shelves and rights of using shelves, and prevent that effectively the rights of using shelves from being distorted and the digital content shelves are cracked and duplicate and disseminate.
Two, the user is when its electronic equipment is opened the digital content shelves; Except reading its rights of using; The digital publishing rights control module can be carried out time adjustment with the digital rights management service device earlier; Carry out the deciphering of digital content shelves again, prolong user's Use Limitation, influenced the rights and interests of digital content publisher by abuse so can effectively prevent the digital content shelves to prevent the user from changing the system time of electronic equipment without authorization.
In sum, the invention relates to a kind of digital copyright management transaction system, it comprises: the digital certificate server; The digital rights management service device; And digital publishing rights control module.The digital rights management service device is in order to produce a digital content private key and an authority private key; The digital content private key is in order to the encrypted digital content shelves and produce encrypted digital content shelves; The authority private key is then in order to the encrypted digital content private key and produce an encrypted digital content private key; Make digital certificate public key encryption authority private key to produce an Encryption permissions private key again; And the attribute kit of encrypted digital content shelves and digital content shelves dressed up digital content encapsulation shelves, and transmit rights of using shelves and digital content encapsulation shelves to e-commerce website, for downloading and oppositely deciphering to read the digital content shelves.The present invention has obvious improvement technically, and has tangible good effect, really is the new design of a novelty, progress, practicality.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of instructions, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is the Organization Chart of a kind of digital copyright management transaction system of one embodiment of the invention.
Fig. 2 is the Organization Chart of a kind of digital copyright management transaction system of another embodiment of the present invention.
Fig. 3 is the encryption synoptic diagram of a kind of digital rights management service device of the embodiment of the invention.
Fig. 4 is the synoptic diagram that a kind of digital rights management service device of the embodiment of the invention produces the rights of using shelves.
Fig. 5 is the synoptic diagram that a kind of digital rights management service device of the embodiment of the invention produces digital content encapsulation shelves.
Fig. 6 is the synoptic diagram that a kind of electronic equipment at user's end of the embodiment of the invention is untied digital content encapsulation shelves.
Fig. 7 is a kind of synoptic diagram of the digital content shelves being deciphered at the electronic equipment of user's end of the embodiment of the invention.
10: electronic equipment 11: browse unit
12: digital publishing rights control module 121: the data storage unit
122: authority processing unit 123: encapsulation shelves processing unit
124: decrypting device 125: the time adjustment unit
20: e-commerce website 30: the digital certificate server
40: digital rights management service device 41: digital rights management module
411: preparatory encryption and decryption subelement 412: encryption/decryption element
413: rights of using generation unit 414: the digital content encapsulation unit
415: transmit receive unit P
1: preliminary encryption key
D: digital content shelves P
1(D): preparatory encrypted digital content shelves
Pre: preview shelves P
2: the digital content private key
R: authority private key C: digital certificate PKI
Pc: user's private key P
2(D): the encrypted digital content shelves
R (P
2): encrypted digital content private key C (R): Encryption permissions private key
Rx: authority is described Dr: the rights of using shelves
P
2(D) w: the attribute Dp ' of digital content shelves, Dp ", Dp " ': digital content encapsulation shelves
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To its embodiment of digital copyright management transaction system, structure, characteristic and the effect thereof that proposes according to the present invention, specify as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to appear in the following detailed description that cooperates with reference to graphic preferred embodiment.Through the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to obtain one more deeply and concrete understanding to the present invention, yet the appended graphic usefulness that only provides reference and explanation be not to be used for the present invention is limited.
Fig. 1 is the Organization Chart of a kind of digital copyright management transaction system of one embodiment of the invention.Fig. 2 is the Organization Chart of a kind of digital copyright management transaction system of another embodiment of the present invention.Fig. 3 is the encryption synoptic diagram of a kind of digital rights management service device of the embodiment of the invention.Fig. 4 is the synoptic diagram that a kind of digital rights management service device of the embodiment of the invention produces the rights of using shelves.Fig. 5 is the synoptic diagram that a kind of digital rights management service device of the embodiment of the invention produces digital content encapsulation shelves.Fig. 6 is the synoptic diagram that a kind of electronic equipment at user's end of the embodiment of the invention is untied digital content encapsulation shelves.Fig. 7 is a kind of synoptic diagram of the digital content shelves being deciphered at the electronic equipment of user's end of the embodiment of the invention.
See also shown in Figure 1ly, present embodiment is a kind of digital copyright management transaction system, and it comprises: a digital certificate server 30; One digital rights management service device 40; An and digital publishing rights control module 12.Be provided with a digital rights management module 41 in the digital rights management service device 40, digital publishing rights control module 12 then is coupled with a browse unit 11 and is stored in the electronic equipment 10.Whereby, the user can link an e-commerce website 20 at user's end through an electronic equipment 10 through the digital copyright management transaction system, to publish or to buy the digital content shelves with copyright protection.
As shown in Figure 1, digital rights management service device 40 is ends that are positioned at the Internet, and is provided with digital rights management module 41.Digital rights management module 41 comprises an encryption/decryption element 412; One rights of using generation unit 413; One digital content encapsulation unit 414; An and transmit receive unit 415.Digital publishing rights control module 12 then comprises: a data storage unit 121; One authority processing unit 122; One encapsulation shelves processing unit 123; And a decrypting device 124, wherein browse unit 11 comprises web browser, music program, e-book reading program or movie program, but not as limit.
Above-mentioned electronic equipment 10 comprises desktop computer, mobile computer, flat computer, intelligent mobile phone, E-book reader or audio and video player, but not as limit.At e-commerce website 20, the user can publish a digital content shelves D at the electronic equipment 10 of user's end, and it for example comprises literal shelves, music shelves, image shelves, film shelves or application program execution shelves, but is not limited thereto.
See also shown in Figure 2ly, the digital rights management module 41 of digital rights management service device 40 can further increase by a preparatory encryption and decryption subelement 411 again, and in addition, digital publishing rights control module 12 further increases by time correcting units 125.
Please consult shown in Figure 3ly simultaneously, the preparatory encryption and decryption subelement of digital rights management service device 40 411 produce a preliminary encryption key P at random in the time of can publishing digital content shelves D in publisher
1, with encrypted digital content shelves D and produce a preparatory encrypted digital content shelves P
1(D).In addition, publisher can upload a preview shelves Pre to e-commerce website 20 in the lump when publishing digital content shelves D, download the usefulness of preview with the user who provides interest.In addition, above-mentioned preliminary encryption can be done initial protection to the digital content shelves D of publisher, and is stolen to prevent digital content shelves D, but also can skip over this encrypting step (as shown in Figure 1).Digital rights management service device 40 also can produce digital content private key P when the user buys digital content shelves D
2And authority private key R, this produces private key and encrypted process, will detail after a while.
Please consult shown in Figure 3 simultaneously; The user holds the user and uses electronic equipment 10 with when e-commerce website 20 is bought digital content shelves D; Digital certificate server 30 can be according to the information of e-commerce website 20 transmission; Produce a disclosed digital certificate PKI C and user's private key Pc; Wherein the digital certificate PKI C and the user's private key Pc that produce of digital certificate server 30 is a pair of asymmetric golden key, and digital certificate PKI C is disclosed in e-commerce website 20 (seeing also Fig. 3) after generation, and user's private key Pc is then obtained and stored by the electronic equipment 10 of user's end after generation.
Please consult shown in Figure 3ly simultaneously, the user holds when buying digital content shelves D the user, and digital rights management service device 40 makes preliminary encryption key P
1Decipher preparatory encrypted digital content shelves P
1(D), supply encryption/decryption element 412 to read to obtain digital content shelves D.Then, encryption/decryption element 412 produces a digital content private key P
2And produce an authority private key R at random.Wherein, digital content private key P
2In order to encrypted digital content shelves D and produce an encrypted digital content shelves P
2(D), authority private key R is then in order to encrypted digital content private key P
2And produce an encrypted digital content private key R (P
2), make digital certificate PKI C Encryption permissions private key R to produce an Encryption permissions private key C (R) again.
Please consult shown in Figure 4ly more simultaneously, the rights of using generation unit 413 of digital rights management service device 40 is in order to encrypted digital content private key R (P
2), Encryption permissions private key C (R) and rights of using describe Rx and form a rights of using shelves Dr and its content is done a digital signature; Wherein to describe Rx be with the represented rights of using of copyright description language (for example XML language) to rights of using; Comprised up to time, access times, used and just detaining access times, term of life and accumulative hours above after a period of time, but not as limit.
Please consult shown in Figure 5ly simultaneously, in the first enforcement state, digital content encapsulation unit 414 can be with encrypted digital content shelves P
2(D) and the attribute P of digital content shelves
2(D) w is packaged into a digital content encapsulation shelves Dp ', wherein the attribute P of digital content shelves
2(D) w comprises file name, type, publisher, publication date and copyright owner, but not as limit.In addition; Because of can keeping the interior of its digital content shelves D, publisher perhaps itself just do not have preview or others factor; So publisher can not need upload preview shelves Pre to e-commerce website 20; And the user can directly download these digital content encapsulation shelves Dp ' according to the information that it is considered or it is obtained, and some other time reevaluates the rights of using of whether buying these digital content shelves D.
Please consult shown in Figure 6 more simultaneously; In this enforcement state; After the user buys rights of using; When carrying out browse unit 11, data storage unit 121 is just downloaded rights of using shelves Dr and a digital content encapsulation shelves Dp ' and is made its installation and be stored in the electronic equipment 10, and authority processing unit 122 is then checked the rights of using whether digital content shelves D is arranged among the rights of using shelves Dr in advance; If judging has rights of using also through after the checking of digital signature, 123 of encapsulation shelves processing units take out encrypted digital content shelves P
2(D) and the attribute P of digital content shelves
2(D) w.
See also shown in Figure 5, in the second enforcement state, a digital content encapsulation shelves Dp " except can be by encrypted digital content shelves P
2(D) and the attribute P of digital content shelves
2(D) outside w forms, also can further rights of using shelves Dr be packaged in digital content encapsulation shelves Dp " in.This enforcement state person of typically using fully obtains the information of digital content shelves D, therefore desires directly to buy these digital content commodity, but if hop other people, does not browse the rights of using of these digital content shelves D because of other people have, so can't browse.
See also shown in Figure 6 again; As digital content encapsulation shelves Dp " when being sent to electronic equipment 10 and carrying out browse unit 11; encapsulation grade processing unit 123 takes out rights of using shelves Dr earlier; judged whether the rights of using of digital content shelves D again by authority processing unit 122, if after rights of using being arranged and passing through the checking of digital signature, 123 of processing units of encapsulation shelves take out encrypted digital content shelves P again
2(D) and the attribute P of digital content shelves
2(D) w; If the rights of using of nil content shelves D or not through the checking of digital signature then can't be taken out encrypted digital content shelves P
2(D) also can't browse.
See also shown in Figure 5ly, the 3rd enforcement state then is except with encrypted digital content shelves P
2(D), the attribute P of digital content shelves
2(D) w and rights of using shelves Dr are packaged into digital content encapsulation shelves Dp " ' outside, also further preview shelves Pre is added these digital content encapsulation shelves Dp " ' in.And after the user buys digital content shelves D, can forward to other people and make it can browse preview shelves Pre.
As shown in Figure 6; It is the synoptic diagram of above-mentioned enforcement state embodiment, as the electronic equipment 10 download digital contents encapsulation shelves Dp of user end " ', and when carrying out browse unit 11; encapsulation shelves processing unit 123 takes out rights of using shelves Dr earlier; judged whether the rights of using of digital content shelves D again by authority processing unit 122, if rights of using are arranged and through after the checking of digital signature, 123 of encapsulation shelves processing units take out encrypted digital content shelves P
2(D) and the attribute P of digital content shelves
2(D) rights of using of w, or the person of being to use nil content shelves D or the not checking through digital signature, 123 attribute P that take out the digital content shelves of encapsulation shelves processing unit
2(D) w and preview shelves Pre, for these preview shelves of the direct preview of user Pre, whereby, and the user digital content encapsulation shelves Dp that can hop " ' give other people, to browse its preview shelves Pre, so can have advertising effect.
See also Fig. 1 and shown in Figure 2; The transmit receive unit 415 of digital rights management service device 40 is rights of using shelves Dr that digital rights management service device 40 is produced and/or a digital content encapsulation shelves Dp ', the Dp of encapsulation ", Dp " ' be sent to e-commerce website 20; Electronic equipment 10 for the user is downloaded and is read; Wherein a digital content encapsulation shelves Dp ', Dp ", Dp " ' have numerous embodiments, its embodiment is existing to be specified, and does not give unnecessary details at this.
Like Fig. 1 and shown in Figure 2; Data storage unit 121 is the digital publishing rights control modules 12 that are arranged in the electronic equipment 10; User end is downloaded rights of using shelves Dr and/or a digital content encapsulation shelves Dp ', Dp from e-commerce website 20 ", Dp " ' after; Data storage unit 121 is with its installation and be stored in the data bank of electronic equipment 10, reads when carrying out browse unit 11 for the user.
Please consult shown in Figure 6 simultaneously; Encapsulation shelves processing unit 123; Be after rights of using inspection through 122 pairs of digital content shelves of authority processing unit D; A digital for processing digital content encapsulation shelves Dp ', Dp ", Dp " ', be packaged in a digital content encapsulation shelves Dp ', Dp with taking-up ", Dp " ' in archives.Be packaged in a digital content encapsulation shelves Dp ', Dp and take out ", Dp " ' in the explanation of archives detailed as above, no longer give unnecessary details at this.
Please consult shown in Figure 7ly simultaneously, encapsulation shelves processing unit 123 takes out encrypted digital content shelves P
2(D) after, decrypting device 124 is with user's private key Pc enabling decryption of encrypted authority private key C (R), to obtain original authority private key R, again with authority private key R enabling decryption of encrypted digital content private key R (P
2), to obtain original digital content private key P
2, again with digital content private key P
2Enabling decryption of encrypted digital content shelves P
2(D), so can obtain the original digital content shelves D of purchase,, thereby can supply browse unit 11 to read through the digital content shelves D of deciphering.
In sum; Produce a digital content private key and produce an authority private key at random and come the encrypted digital content private key by copyright management server; Download disclosed digital certificate PKI from e-commerce website again and come the Encryption permissions private key, and then form rights of using shelves and digital signature in addition, because its multi-enciphering step and digital signature; Can strengthen the protection of digital content shelves and rights of using shelves, and prevent that effectively the rights of using shelves from being distorted and the digital content shelves are cracked and duplicate and disseminate.
Again since the user when its electronic equipment is opened digital content shelves; Can proofread and correct with the advanced line time of digital rights management service device; Carry out the deciphering of digital content shelves again, change the system time of electronic equipment without authorization, and then prolong user's Use Limitation to prevent the user; So can prevent effectively that the digital content shelves from being abused, and effectively protect the rights and interests of digital content publisher.
In addition, when the user opens the digital content shelves at its electronic equipment, except carrying out time adjustment; The authority processing unit also can reexamine the rights of using whether user has the digital content shelves, if rights of using are arranged, then can open digital content encapsulation shelves; And decipher; To let the user browse the digital content shelves, if no rights of using also can be opened the preview shelves; To let the free decision of user whether buy this digital content shelves, therefore can promote the circulation of digital content shelves and the elasticity in the commodity transaction.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (16)
1. a digital copyright management transaction system is characterized in that it is to link an e-commerce website to publish or to buy the digital content shelves with copyright protection at user end through an electronic equipment, and this digital copyright management transaction system comprises:
One digital certificate server produces a disclosed digital certificate PKI and user's private key, and wherein this digital certificate PKI and this user's private key are a pair of asymmetric golden key;
One digital rights management service device, it is provided with a digital rights management module, and this digital rights management module comprises:
One encryption/decryption element; It produces a digital content private key; To encrypt these digital content shelves and to produce encrypted digital content shelves; And produce an authority private key at random to encrypt this digital content private key and to produce an encrypted digital content private key, make this authority private key of this digital certificate public key encryption to produce an Encryption permissions private key again;
One rights of using generation unit, it makes this encrypted digital content private key, this Encryption permissions private key and rights of using describe composition one rights of using shelves and its content is done a digital signature;
One digital content encapsulation unit, it makes the attribute kit of these encrypted digital content shelves and these digital content shelves dress up digital content encapsulation shelves;
One transmit receive unit, it transmits these rights of using shelves and this digital content encapsulates shelves to this e-commerce website, downloads and reads for this electronic equipment of this user's end; And
One digital publishing rights control module, itself and a browse unit are coupled and are stored in this electronic equipment, and this digital publishing rights control module comprises:
One data storage unit, after downloading these rights of using shelves and this digital content encapsulation shelves, this data storage unit makes these rights of using shelves and this digital content encapsulation shelves install and be stored in this electronic equipment;
One authority processing unit; After these rights of using shelves are installed; This authority processing unit reads the rights of using of these rights of using shelves after the installation and handles this rights of using shelves, wherein handles these rights of using shelves and comprises whether this digital signature of checking and inspection have the rights of using of digital content;
One encapsulation shelves processing unit, it is through after the inspection of rights of using, handles this digital content encapsulation shelves, to take out the attribute of these encrypted digital content shelves and these digital content shelves; And
One decrypting device; It is with this this Encryption permissions private key of user's private key deciphering; To obtain this original authority private key, again with this this encrypted digital content private key of authority private key deciphering, to obtain this original digital content private key; Again with these these encrypted digital content shelves of digital content private key deciphering, to obtain these digital content shelves of purchase.
2. digital copyright management transaction system according to claim 1 is characterized in that wherein said digital certificate PKI is disclosed in this e-commerce website after generation.
3. digital copyright management transaction system according to claim 1 is characterized in that wherein said user's private key obtained and stored by this electronic equipment of this user end after generation.
4. digital copyright management transaction system according to claim 1 is characterized in that wherein said digital content encapsulation unit further is packaged in these rights of using shelves in these digital content encapsulation shelves again.
5. digital copyright management transaction system according to claim 4; It is characterized in that wherein said digital content encapsulation shelves are when being sent to this electronic equipment and carrying out this browse unit; This encapsulation shelves processing unit takes out these rights of using shelves earlier; Judged whether the rights of using of these digital content shelves again by this authority processing unit, if rights of using are arranged, this encapsulation shelves processing unit then takes out the attribute of these encrypted digital content shelves and these digital content shelves.
6. digital copyright management transaction system according to claim 1; It is characterized in that wherein said digital rights management module further comprises: a preparatory encryption and decryption subelement; It is to produce a preliminary encryption key when publishing these digital content shelves in publisher at random; To encrypt these digital content shelves and to produce preparatory encrypted digital content shelves; When the user holds when buying these digital content shelves this user,, read to obtain this this encryption/decryption element of digital content shelves confession then with these preliminary encryption key deciphering this preparatory encrypted digital content shelves.
7. digital copyright management transaction system according to claim 6, another and upload preview shelves when it is characterized in that wherein that this publisher publishes these digital content shelves to this e-commerce website.
8. digital copyright management transaction system according to claim 7 is characterized in that these preview shelves that wherein said digital content encapsulation unit further will have been uploaded are packaged in these digital content encapsulation shelves.
9. digital copyright management transaction system according to claim 8 is characterized in that wherein said digital content encapsulation unit further is packaged in these rights of using shelves in these digital content encapsulation shelves again.
10. digital copyright management transaction system according to claim 9; It is characterized in that wherein when described digital content encapsulation shelves are sent to this electronic equipment and carry out this browse unit; This encapsulation shelves processing unit takes out these rights of using shelves earlier; Judge the rights of using whether these digital content shelves are arranged in these rights of using shelves by this authority processing unit again, if rights of using are arranged, this encapsulation shelves processing unit then takes out the attribute of these encrypted digital content shelves and these digital content shelves.
11. digital copyright management transaction system according to claim 10; When it is characterized in that wherein said authority processing unit is judged the rights of using of not having these digital content shelves in these rights of using shelves, this encapsulation shelves processing unit then takes out attribute and this preview shelves of these digital content shelves.
12. digital copyright management transaction system according to claim 1; It is characterized in that it is with the represented rights of using of copyright description language that wherein said rights of using are described, comprised up to time, access times, used and just detaining access times, term of life and accumulative hours above after a period of time.
13. digital copyright management transaction system according to claim 1 is characterized in that the attribute of wherein said digital content shelves comprises file name, type, publisher, publication date and copyright owner.
14. digital copyright management transaction system according to claim 1; It is characterized in that wherein said digital publishing rights control module further comprises a time correcting unit; This time adjustment unit is when carrying out this browse unit and this digital rights management service device is linked up, to carry out time adjustment.
15. digital copyright management transaction system according to claim 14; It is characterized in that the time adjustment that wherein said time adjustment unit carries out is meant that this electronic equipment and this digital rights management service device carry out system time and check; If its system time is variant, then the system time of this electronic equipment is proofreaied and correct.
16. digital copyright management transaction system according to claim 1 is characterized in that wherein said browse unit comprises web browser, music program, e-book reading program or movie program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105553296A CN102467711A (en) | 2010-11-19 | 2010-11-19 | Digital copyright management transaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105553296A CN102467711A (en) | 2010-11-19 | 2010-11-19 | Digital copyright management transaction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102467711A true CN102467711A (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105553296A Pending CN102467711A (en) | 2010-11-19 | 2010-11-19 | Digital copyright management transaction system |
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| Country | Link |
|---|---|
| CN (1) | CN102467711A (en) |
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Application publication date: 20120523 |