CN102088443A - Method and system for subscribing digital periodical with copyright protection - Google Patents
Method and system for subscribing digital periodical with copyright protection Download PDFInfo
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- CN102088443A CN102088443A CN2009102414405A CN200910241440A CN102088443A CN 102088443 A CN102088443 A CN 102088443A CN 2009102414405 A CN2009102414405 A CN 2009102414405A CN 200910241440 A CN200910241440 A CN 200910241440A CN 102088443 A CN102088443 A CN 102088443A
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Abstract
The present invention provides a method for subscribing a digital periodical with copyright protection, and a system thereof. Wherein the method comprises the steps as follows: a server takes hardware information of each registered client as an encryption key to perform encryption on a protection key used for encrypting digital periodical content; the server combines the encryption information with corresponding prompt information to generate a license, then merges a plurality of licenses to generate a license file; on each issue date, the server pushes the license file and the encrypted digital periodical content together to the client; and the client receiving the license file performs decryption on the encrypted digital periodical content according to the license file, the hardware information as well as the corresponding prompt information. The license file generated by the method in the present invention allows that the encrypted digital periodical content only can be obtained on the specified hardware equipment, and one license file can be used on a plurality of hardware equipment registered by a subscription user, in addition, the license file still can be normally used when the hardware equipment changes partially, which is greatly convenient for users.
Description
Technical field
The present invention relates to digital periodical field, be specifically related to a kind of digital Journal subscription method and system with copyright protection.
Background technology
The main mode of present digital Journal subscription is that periodical content is made a file of not encrypting (as pdf), is distributed to by email on booking reader's the computer as annex then, can't realize the copyright protection to digital content.And existing digital copyright protection technology relates generally to the protection of separate editions such as e-book, and all is to be undertaken by the mode that download the website, and the such serial publications of digital periodical is used and inconvenience.
At application number is that 02815591.2 Chinese patent " is used for subscribing to the method and system of digital rights management ", has proposed a kind of management method that can be used for digital Journal subscription.In the method; store the subscription inventory that comprises the PKI relevant with the booking reader; whether license server submits licence to by the PKI of checking the booking reader on the subscription inventory, defined use right and service condition and the state variable etc. relevant with a plurality of protected contents in licence.After license server is obtained licence; point of departure (such as; businessman) it is packed in advance with a plurality of protected contents; send to the booking reader; thereby the booking reader can visit a plurality of protected contents according to use right that defines in the licence and service condition thereof, and needn't independently activate each licence relevant with each protected content.But,, that is, reach control for each booking reader generates licence, on a plurality of hardware devices of appointment so uncontrollable subscribed content only uses to subscribed content because this method is by generating licence according to each booking reader's PKI.That is to say, this method mainly be according to the information relevant with the booking reader (such as, the territory account information), rather than the information of its many hardware devices, so on any one hardware device,, only limit on the hardware device of appointment, visit and can not control as long as just allow visit with the login of territory number of the account.In brief, this mode can only realize the control to the people, and can not realize the control to hardware device, particularly to the situation of the control of booking reader's multiple devices.
Summary of the invention
In order to address the above problem; the invention provides a kind of digital Journal subscription method and system with copyright protection; thereby avoid the problem arbitrarily transmitted in the digital periodical distribution process, and only can on a plurality of hardware devices of booking reader's appointment, obtain the digital periodical content encrypted.
In order to realize above purpose, the digital Journal subscription method of band copyright protection provided by the invention may further comprise the steps: step 1, booking reader on its client to server registration and subscribe to digital periodical, server receives the log-on message and the subscription information of a plurality of clients that the booking reader registered, described log-on message comprises the hardware information and the corresponding prompt information thereof of client device, and described subscription information comprises the journal title of booking reader's information, subscription and subscribes to the start-stop phase; Step 2, server by utilizing protection key are encrypted the digital periodical content of subscribing to, and for the booking reader of issue date within its subscription start-stop phase, according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof, then the digital periodical content of license file and encryption is pushed to this booking reader's client; With step 3, receive hardware information and the corresponding prompt information thereof that the client of the digital periodical content of license file and encryption uses according to this license file and when registration the digital periodical content of encrypting be decrypted.
Can come execution in step 1 by following dual mode: the booking reader registers and subscribes to digital periodical respectively on its a plurality of clients, these clients are gathered the hardware information and the corresponding prompt information thereof of equipment separately respectively, and this hardware information and corresponding prompt information thereof are sent to server with subscription information; Perhaps, the booking reader registers and subscribes to digital periodical on an one client, this client gather the hardware information of equipment of itself and other client device that this booking reader is registered hardware information and with these hardware information corresponding prompt information, and these hardware informations and corresponding prompt information thereof are sent to server with subscription information.
The step of server generation license file comprises in the step 2: utilize the hardware information generation encryption key of each client of registration that the protection key is encrypted, form an enciphered message; This enciphered message and corresponding prompt information thereof are generated an authorization together; The a plurality of authorizations that generate are merged license file of generation.Wherein, server can utilize Message Digest 5 that the hardware information of client device is carried out conversion, and utilizes the information that obtains after the conversion to generate encryption key.
Step 3 comprises: the information of using during according to registration finds corresponding authorization in the license file; Utilize the hardware information generating solution decryption key of this client that the enciphered message in this authorization is decrypted, key is protected; Utilize the protection key that the digital periodical content of encrypting is decrypted.Wherein, client can utilize Message Digest 5 that the hardware information of client device is carried out conversion, and utilizes the information generating solution decryption key that obtains after the conversion to be decrypted.
Preferably, the present invention also can delete unnecessary equipment by the following method: booking reader's any one from a plurality of clients that it has been registered sends the request of sweep equipment to server, comprises the hardware information of the equipment that sends this removal request and corresponding prompt information thereof and the information for the treatment of sweep equipment in this removal request.Server is after receiving removal request; the hardware information and the corresponding prompt information thereof of sweep equipment is treated in deletion from original log-on message; thereby the log-on message that obtains upgrading, and utilize the log-on message of this renewal and described protection key to generate license file.
Preferably, can increase device registration by the following method: booking reader's any one from a plurality of clients that it has been registered sends the request of increase equipment to server, comprise the hardware information and the corresponding prompt information thereof of the equipment that sends this increases request and hardware information and the corresponding prompt information thereof of waiting to increase equipment in this increase request, the described hardware information of waiting to increase equipment and corresponding prompt information thereof are by sending the equipment collection that this increase is asked.Server is after receiving the increase request; in original log-on message, increase hardware information and the corresponding prompt information thereof of waiting to increase equipment; thereby the log-on message that obtains upgrading, and utilize the log-on message of this renewal and described protection key to generate license file.More preferably, the present invention can pass through secret sharing scheme, in conjunction with the hardware configuration situation of subscriber equipment, normal occupancy permit file still when adopting the method for digital periodical with hardware adaptive mechanism and hardware binding to guarantee that part hardware configuration in hardware device takes place to change.
Correspondingly, a kind of digital Journal subscription system with copyright protection provided by the invention comprises: a plurality of clients, be used for the booking reader thereon to server registration and subscribe to digital periodical, then log-on message and subscription information are sent to server, when receiving the digital periodical content of license file and encryption from server, hardware information and the corresponding prompt information thereof used during according to this license file and registration are decrypted the digital periodical content of encrypting; And server; be used to utilize the protection key that the digital periodical content of subscribing to is encrypted; and for the booking reader of issue date within its subscription start-stop phase; according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof, then the digital periodical content of license file and encryption is pushed to this booking reader's client.
In the present invention; the hardware information of server by utilizing booking reader's registration is encrypted the protection key that is used for digital periodical content is encrypted as encryption key; and its corresponding information of protection key that will encrypt generates corresponding authorization together; thereby make and on a plurality of clients of the booking reader appointment of issue date in it subscribes to the start-stop phase, to obtain subscribed content, realize control hardware device.In addition, server has merged a plurality of authorizations and has generated a license file, thereby make can be on a plurality of hardware devices of booking reader's registration shared this license file, and the normal occupancy permit file still when change takes place of the part hardware configuration in hardware device, greatly facilitate the user.In addition, the present invention also can delete or increase equipment the flexibility that has improved digital Journal subscription on the client of having registered.
Description of drawings
Fig. 1 is the structural representation of digital Journal subscription system of the band copyright protection of first embodiment of the invention;
Fig. 2 is the schematic flow sheet of digital Journal subscription method of the band copyright protection of first embodiment of the invention;
Fig. 3 is the concrete structure schematic diagram of the server in the system shown in Figure 1;
Fig. 4 is the concrete structure schematic diagram of the client in the system shown in Figure 1;
Fig. 5 is the structural representation of the digital Journal subscription system of band copyright protection second embodiment of the invention;
Fig. 6 is the schematic diagram of license file according to a particular embodiment of the invention.
Embodiment
The invention provides a kind of digital Journal subscription method and system with copyright protection; be used for digital periodical content is being subscribed to and distribution process is protected and controlled; avoid the problem arbitrarily transmitted in the digital periodical distribution process, and can support a license file in a plurality of hardware devices that the booking reader registered, to use.
The present invention is described in detail below in conjunction with drawings and Examples.
(first execution mode)
Fig. 1 is the structural representation of digital Journal subscription system of the band copyright protection of first embodiment of the invention.As shown in Figure 1, this system comprises: server 11 and a plurality of client 12A, a plurality of client 12B (and more client 12C, 12D ... not shown), wherein a plurality of client 12A belong to same booking reader A, and a plurality of client 12B belong to same booking reader B.Below, be that example describes with mutual between client 12A and the server 11.
Fig. 2 is the flow chart of digital Journal subscription method of the band copyright protection of first embodiment of the invention.As shown in Figure 2, this method may further comprise the steps:
Step S201, booking reader's registration and subscription step
In this step, the booking reader on its client to server registration and subscribe to digital periodical, client sends to server with log-on message and subscription information, the hardware information of described log-on message client device and corresponding prompt information thereof, described subscription information comprise the journal title of booking reader's information, subscription and subscribe to the start-stop phase.Server receives the log-on message and the subscription information of a plurality of clients that the booking reader registered.
Specifically, in first execution mode of the present invention, booking reader A registers respectively on a plurality of client 12A and subscribes to digital periodical, comprises information of registered users, the selected journal title of subscribing to and subscription start-stop phase etc.Then, the device name of these clients 12A extraction client 12A (for example, computer name) as its corresponding information, and its hardware information and corresponding prompt information sent to server 11 as log-on message with subscription information, as mentioned above, subscription information comprises the journal title of booking reader's information, subscription and subscribes to the start-stop phase.Perhaps, also can allow the user import a name and be referred to as hardware information corresponding prompt information with each client 12A.Corresponding one by one for the hardware information that makes information and each client 12A, if the information of registration repeats, repeat such as device name, then allow booking reader A to revise information, that is, re-enter a unduplicated title.
Step S203, server for encrypting and authorisation step
In this step; server by utilizing protection key is encrypted the digital periodical content of subscribing to; and for the booking reader of issue date within its subscription start-stop phase; according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof, then the digital periodical content of license file and encryption is pushed to this booking reader's client.
Specifically; in the issue date of digital periodical; server 11 uses key schedule; generate the protection key such as the random key algorithm; and utilize this protection key that digital periodical content is encrypted; check each booking reader then; if the current issue date subscribes within the start-stop phase at it; then generate license file, then the digital periodical content of license file and encryption is pushed to a plurality of clients of this booking reader according to protection key and hardware information and corresponding prompt information thereof from the log-on message that this booking reader's a plurality of clients receive.Wherein, the step of server generation license file further comprises:
Utilize the hardware information generation encryption key of each client 12A of registration that the protection key is encrypted, form an enciphered message, wherein, can utilize Message Digest 5 that the hardware information of client is carried out conversion, and utilize the information that obtains after the conversion to generate encryption key;
This enciphered message and corresponding prompt information thereof are generated an authorization together;
The a plurality of authorizations that generate are merged license file of generation.
Step S205, client decryption step
In this step, receive hardware information and the corresponding prompt information thereof that the client 12A of the digital periodical content of license file and encryption uses according to this license file and when registration the digital periodical content of encrypting is decrypted.Specifically, this step may further comprise the steps:
Employed information finds corresponding authorization in the license file during according to registration;
Utilize the hardware information generating solution decryption key of this client 12A that the enciphered message in the authorization that finds is decrypted, key is protected, wherein, utilize Message Digest 5 that the hardware information conversion of a plurality of client 12A is obtained under the situation of encryption key at server 11, client 12A correspondingly utilizes Message Digest 5 that its hardware information is carried out conversion, utilizes the information generating solution decryption key that obtains after the conversion;
The protection key that utilizes deciphering to obtain is decrypted the digital periodical content of encrypting.
By this method for subscribing, the booking reader can regularly receive the digital periodical content of license file and band copyright protection on a plurality of client devices of its appointment, thereby has not only ensured the interests of periodical society, but also can realize the control to hardware device.When the booking reader need visit digital periodical content at every turn; the device name of using during its client utilization registration or other name information of input find corresponding authorization as information from license file; and utilize the hardware information generating solution decryption key of this client device; enciphered message in this authorization is decrypted; thereby obtain the protection key, utilize this protection key that digital periodical content is decrypted then.After the deciphering, booking reader's off-line immediately uses, and has improved the convenient degree that the booking reader uses greatly.
All need to resend the solution of application than obtain subscribed content at every turn, the present invention adopts the subscription scheme, do not initiate request by client when not needing to wait until the digital periodical of distribution at every turn, but directly initiatively generate license file by server, and license file is pushed to a plurality of clients that the booking reader limits, thereby, can avoid the problem of Replay Attack.
In addition, the license file that generates according to the present invention only not only limits and uses on several client devices that the booking reader formulates, and can shared this license file on these a plurality of client devices, generate a plurality of license files and needn't be respectively each client.Therefore, the booking reader can obtain digital periodical very simply and easily.
Fig. 3 and Fig. 4 are respectively the concrete structure figure that realizes the server and client side of method shown in Figure 2.
As shown in Figure 3, server 11 specifically comprises: subscribe to processing unit 31, be used for receiving log-on message and subscription information from client, and log-on message and subscription information are sent to periodical encryption and granted unit 32; Periodical is encrypted and granted unit 32, be used for utilizing the protection key that digital periodical content is encrypted, and for the booking reader of issue date within its subscription start-stop phase, according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof; With push unit 33, be used for the digital periodical content of license file and encryption is pushed to client.
Wherein, periodical is encrypted and granted unit 32 further comprises: periodical content unit 321, be used for utilizing the protection key that digital periodical content is encrypted, and will protect key to send to encryption key unit 322, the digital periodical content of encrypting is sent to push unit 33; Encryption key unit 322, be used to utilize hardware information generation encryption key that the protection keys of 321 receptions from the periodical content unit are encrypted from subscribing to processing unit 31 receptions, form an enciphered message, and this enciphered message sent to license file generation unit 324, encryption key is sent to subscribe to client-side information unit 323; Subscribe to client-side information unit 323, be used to generate from the information of subscription processing unit 31 receptions and the corresponding relation of 322 encryption keys that receive from the encryption key unit; License file generation unit 324, be used to utilize from subscribe to corresponding relation that client-side information unit 323 receives, from subscribing to information that processing unit 31 receives and 322 enciphered messages that receive generate authorizations from the encryption key unit, and a license file of a plurality of authorizations merging generations that will generate, then this license file is sent to push unit 33.Then, push unit 33 is pushed to the digital periodical content of license file and encryption a plurality of client 12A of booking reader A.
As shown in Figure 4, client 12A specifically comprises: collecting unit 40, and the hardware information and the corresponding prompt information thereof of gathering this client 12A self, and this hardware information and information sent to registering unit 41 as a log-on message; Registering unit 41, the booking reader is by this registering unit registration and subscribe to digital periodical, and subscription information and log-on message are sent to server 11; Receiving element 42 is used to receive from the license file of server 11 propelling movements and the digital periodical content of encryption, and license file is sent to protection cipher key unit 43, and the digital periodical content of encrypting is sent to the digital periodical of deciphering unit 44; Protection cipher key unit 43, the information of using when being used for according to registration finds the corresponding authorization of license file, and utilize the hardware information generating solution decryption key of this client 12A that the enciphered message in this authorization is decrypted, the key that is protected, and should protect key to send to the digital periodical of deciphering unit 44; With deciphering digital periodical unit 44, utilize the protection key that receives from protection cipher key unit 43 that the digital periodical content of the encryption that receives from receiving element 42 is decrypted.
Wherein, protection cipher key unit 43 further comprises: licence extraction unit 431, the information of using when being used for according to registration finds corresponding authorization from the license file that receiving element 42 receives, from this authorization, obtain corresponding enciphered message, and this enciphered message sent to separate privacy protection cipher key unit 432; Separate privacy protection cipher key unit 432, utilize the hardware information generating solution decryption key of this client 12A that the enciphered message that receives from licence extraction unit 431 is decrypted, key is protected.
More than referring to figs. 1 to Fig. 4 the method for subscribing and the system of first embodiment of the invention have been described, but should be appreciated that the inventive method is not limited in disclosed step and unit in this execution mode, also can comprise other prioritization schemes.
Such as, in order to increase fail safe, client 12A can encrypt transmission to log-on message and subscription information when server 11 sends log-on message and subscription information, and server 11 at first will utilize corresponding decryption method that it is decrypted after receiving log-on message and subscription information.And booking reader A also can only subscribe to and register on a client 12A, only registers on other client 12A, and needn't subscribe to again.
Again such as, when booking reader A subscribes to digital periodical, can be according to different subscription conditions, such as, different expenses standards obtains different use rights, comprise right, and can limit the quantity of registered client 12A according to different expenses standards to the operations such as forwarding, download, duplicating, printing of the digital periodical content of deciphering.Correspondingly, in each authorization in license file, in first execution mode, disclosed enciphered message and the corresponding prompt information thereof, also should comprise these subscription conditions and use right.
Again such as, the propelling movement mode that is adopted in first execution mode, server 11 also can only be pushed to a plurality of client 12A that booking reader A is registered with license file in the issue date.In this case, the client 12A that receives license file at first downloads the digital periodical content of encrypting according to this license file from server 11, and is decrypted according to this license file and the log-on message digital periodical content to the encryption of downloading.Because digital periodical content has been encrypted, thus can be by any channel confession user's download, such as, publicly or issue the digital periodical content of encryption in modes such as specific cryptosystems.In addition; server 11 also can be ready to protect at random key and license file according to the log-on message and the subscription information that receive in advance; after each issue digital periodical content completes; utilize this to protect key that it is encrypted at random; then regularly (such as, close on the date in issue date or other) license file etc. is pushed to the client 12A of registration.Perhaps, server also can be merged into the digital periodical content of license file and encryption a file, regularly is pushed to this booking reader's client then.
(second execution mode)
In second execution mode, be with the difference of first execution mode, not on each client 12A of booking reader A, to register respectively, but only on an one client 12A, register and subscribe to, by this client 12A gather all client devices that booking reader A registered hardware information and with these hardware information corresponding prompt information.Concrete acquisition method can connect by network, other interface connects or sending or copying on the client device of just registering after Information Monitoring on this machine is encrypted.
Fig. 5 is a schematic diagram of realizing the system of above method.As shown in Figure 5, when booking reader A registers by registering unit 41 and subscribes to digital periodical, collecting unit 40 gather the hardware information of himself equipment and other client device that booking reader A is registered hardware information and with these hardware information corresponding prompt information, and these hardware informations and information are sent to registering unit 41 as a log-on message.
By this execution mode, booking reader A only need register and subscribe on an one client (such as, computer), just can other client of this user (such as, mobile phone) directly receives on and watch digital periodical, and need on other client, not re-register.
(specific embodiment)
Below will come the present invention is further detailed by a specific embodiment.
In this embodiment; suppose; first phase is published capable unit need be to the monthly magazine of a distribution in 1 day every month with the subscription of copyright protection; a booking reader Zhang San has subscribed to this periodical; subscribing to the start-stop phase is from year December in January, 2009 to 2009, and need receive and read this part periodical on N platform computer (or mobile phone, handheld device).
At first, Zhang San on an one client to the server registration user and pay, and on N platform computer (or mobile phone, handheld device) respectively to server registration hardware information HINFOi (i=1 ... N) (as the mainboard of PC number, CPU number, hard reel number; The equipment unique number that the handheld device of Windows Mobile gets access to by GetDeviceUniqueID ()), and extract corresponding calculated machine name CNAMEi (i=1 respectively ... N) as information, for example, can use GetComputerName () function to obtain computer name at the windows platform, obtain computer name at the Linux platform with sys_gethostname () function, in Windows Mobile platform (Pocket PC and SmartPhone), use System.Net.Dns.GetHostName () attribute to obtain related names, can the device driver when linking to each other on hand-held mobile arrangement for reading obtain the title of equipment with computer.Then, with the hardware information HINFOi (i=1 that gets access to ... N) and computer name CNAMEi (i=1 ... N) send to server end as log-on message with subscription information (journal title and the subscription start-stop phase that comprise booking reader's information, subscription).When sending log-on message and subscription information, transmit hardware information and computer name by encrypting, for example, use server public key K, respectively HINFOi and CNAMEi are encrypted, and be connected in series K (HINFOi)+K (CNAMEi) together and send (series-mounting can carry out as the way of " || space || " by the increase separator) as parameter.
Then, server is by being decrypted with the corresponding private key P of PKI K; 1 day every month, at first be ready to the digital periodical content file CF of this monthly magazine, use the random key maker to produce a random key then as protection key K C, content file CF is carried out the content file KC (CF) that symmetric cryptography obtains encrypting.Server is checked through Zhang San and has subscribed to this periodical; so the hardware information of Zhang San's N platform equipment is carried out obtaining Hash (HINFOi) (i=1 after the conversion with Message Digest 5 Hash () ... N) as encryption key; be used for encipherment protection key K C, obtain enciphered message KHi (i=1 ... N).Server with the corresponding authorization of this equipment in add enciphered message (that is the protection key of, having encrypted) KHi (i=1 ... N) and the information of deciphering this enciphered message, that is, and the corresponding relation of corresponding enciphered message and information.
Fig. 6 is the schematic diagram of the license file FLic that generated among this embodiment.As shown in Figure 6,＜Permission〉" zhangsanPC " information in the label in the ClientName attribute is information,＜info〉information of " akeo832mj294bkjhk " in the label is enciphered message, that is, and the protection key of encryption.
Then, server sends to the digital periodical content file KC (CF) that the license file FLic that generates gets well with encryption in Zhang San's the mailbox by email.
After Zhang San gets the mail, on Zhang San's N platform client device, open license file FLic, after client is at first obtained the device name information CNAMEi of this machine, in license file, find the ClientName Permission node identical with CNAMEi, obtain its enciphered message, that is,＜and info〉information in the node.Then; the hardware information HINFOi of this equipment of utilization carries out obtaining decruption key after the conversion through Message Digest 5 Hash (HINFOi); decrypt the protection key K C of digital periodical content; and decipher digital periodical content file KC (CF), thereby obtain final this numeral monthly magazine content CF with this protection key K C.
(the 3rd execution mode)
The 3rd execution mode is compared with above execution mode, has increased the function that allows the unnecessary equipment of deletion and increase new equipment.
In some cases (as device losses, damage or do in addition its with), the booking reader need delete the unnecessary equipment that does not re-use.Can adopt following method deletion redundant equipment: booking reader A any one from a plurality of client 12A that it has been registered sends the request of deleting redundant equipment 12A ' to server 11, can comprise following relevant parameter in this removal request: the hardware information HINFOn of the equipment 12A of transmission removal request and corresponding prompt information CNAMEn thereof and the information CNAMEm that treats sweep equipment 12A '.It is equipment to be deleted that this method does not limit the equipment of filing an application, and losss even can guarantee certain equipment like this, still can send removal request to server on other device registration, thereby with this unit deletion of lossing.
In addition, in order to strengthen the fail safe of sweep equipment process, can use the PKI K of server 11 that removal request is encrypted, and be connected in series K (HINFOn)+K (CNAMEn)+K (CNAMEm) to send (series-mounting can carry out as the way of " || space || " by the increase separator) as parameter.
About increasing the function of equipment, can realize by the following method: any one that booking reader A can be from a plurality of client 12A that it has been registered sends the request that increases device A m to server 11, comprise hardware information HINFOn and corresponding prompt information CNAMEn thereof that sends the equipment 12A that increases request and hardware information HINFOm and the corresponding prompt information CNAMEm thereof that waits to increase device A m in this increase request, wherein, wait that the hardware information HINFOm and the corresponding prompt information CNAMEm thereof that increase device A m gather by sending the equipment 12A that increases request.As mentioned above, concrete acquisition method can connect by network, other interfaces connect or sending or copying on the client 12A that is just increasing registration after Information Monitoring on this machine Am is encrypted.The same with the sweep equipment process, in order to strengthen the fail safe that increases device procedures, use the PKI K of server 11 to encrypt, and be connected in series K (HINFOm)+K (CNAMEm)+K (HINFOn)+K (CNAMEn) to send (series-mounting can carry out as the way of " || space || " by the increase separator) as parameter to increasing request.
(the 4th execution mode)
The difference of the 4th execution mode and above execution mode is, increased adaptive functional to part hardware configuration change in the hardware device, promptly, part hardware configuration in hardware device (such as, mainboard, CPU, hard disk etc.) when changing (comprising replacing, deletion, increase etc.), still can normally use the license file of generation to obtain the digital periodical content of encryption.
For this function, the present invention adopts and to have the digital content of hardware adaptive mechanism and the method for hardware binding (is that 200410004751.7 Chinese patent " has the digital content of hardware adaptive mechanism and the method for hardware binding " referring to the patent No.) to realize.In this method, mainly adopt secret sharing scheme, realize hardware adaptive mechanism in conjunction with the hardware configuration situation of booking reader's client, thereby make the change of the hardware configuration in the hardware device in the certain limit, can not influence the legal use of digital content.Specifically, the protection key of digital periodical is divided into n shared Sub key, and generates respectively to this n the n that the shared Sub key an is encrypted encryption key according to a plurality of hardware configuration in the client device.When in this client device, having the n-t of being less than hardware configuration that change takes place, promptly, when have in this client device t and more than hardware configuration when remaining valid, still normally the occupancy permit file obtains encrypted digital content, otherwise can't continue to use digital content.In this patent, (t n) realizes above method, and wherein, t is the threshold value of the quantity of effective sub-key (corresponding to the hardware configuration of remaining valid) to define threshold schemes.
In the present invention, when booking reader A registers on client 12A, under the situation of first execution mode, the characteristic information of n the related hardware configuration of collecting unit 40 collection these hardware devices self of the client 12A that is registering (such as, numbering), comprising non-existent n on this client device
0The characteristic information of individual related hardware configuration; Under the situation that adopts second execution mode, the characteristic information of the related hardware configuration of whole client device 12A that the collecting unit 40 collection booking reader A of the client 12A that is registering are registered, the characteristic information that each client device is gathered n related hardware configuration (comprises non-existent n on this client device
0The characteristic information of individual related hardware configuration).At this moment, client 12A comprises these characteristic informations of gathering by collecting unit 40 to the hardware information of server 11 transmissions.
According to the hardware information that receives, select (t, n) value of the threshold parameter t in the threshold schemes:
The protection key of digital periodical is divided into n shared Sub key;
For each client device, hardware configuration binding with this n shared Sub key and this equipment, promptly utilize the characteristic information of n hardware configuration of this equipment that receives to generate n encryption key, be respectively applied for n the bit string that n shared Sub key or this n shared Sub key are carried out after the conversion one by one and encrypt, generate the validity check information of each shared Sub key simultaneously; The value of threshold parameter t, the shared Sub key and the validity check information thereof of encryption are formed an enciphered message; This enciphered message and corresponding prompt information thereof are generated an authorization together;
The a plurality of authorizations that generate are merged license file of generation.
The information of using when registering according to client 12A finds corresponding authorization in the license file;
Extract the characteristic information of n related hardware configuration of this client 12A, and utilize these characteristic informations to generate n decruption key, be respectively applied for the n in the enciphered message in this authorization shared Sub key is decrypted;
Validity check information and (t according to each shared Sub key; n) threshold schemes; each shared Sub key is carried out validity check; if have t and above effective shared Sub key; then recover the protection key of digital periodical content according to these effective sub-keys; and utilize this protection key that the digital periodical content of encrypting is decrypted, otherwise key recovery failure.
By this execution mode, the hardware configuration change in the hardware device in the certain limit can not influence the legal use of digital periodical, and the license file of generation still can continue normal use, and does not need to apply for again, greatly facilitates the user.
In addition, preferably, also can comprise out of Memory in the formed enciphered message, such as, cryptographic algorithm information etc., promptly, the shared Sub key of the value of threshold parameter t, encryption and validity check information thereof and out of Memory (such as, cryptographic algorithm information) are formed an enciphered message.In addition, in license file, also can comprise the information of other needs, such as license file integrity check information etc.At this moment, client at first needs the integrality and the validity of license file are carried out verification after receiving license file.
Can find out from above embodiment, according to method for subscribing of the present invention, the booking reader can regularly receive license file on a plurality of client devices of its appointment, according to this license file the digital periodical content of encrypting is decrypted then, thereby not only avoided the problem of Replay Attack, but also can realize control hardware device.In addition, a licence can use on a plurality of equipment of booking reader, and needn't generate respectively and send, and the part hardware configuration in hardware device is when change takes place, normal occupancy permit file still, thus greatly facilitate the user.In addition, the booking reader can delete or increase equipment the flexibility that has improved digital Journal subscription on the client of having registered.
Below describe the present invention in detail with embodiment with reference to the accompanying drawings.But; it should be appreciated by those skilled in the art; the present invention is not limited to disclosed specific embodiment, and similar modification, replacement and distortion that any those of ordinary skill in the art can expect on this basis all should be included in protection scope of the present invention.
Claims (33)
1. digital Journal subscription method with copyright protection, this method comprises:
Step 1, booking reader on its client to server registration and subscribe to digital periodical, server receives the log-on message and the subscription information of a plurality of clients that the booking reader registered, described log-on message comprises the hardware information and the corresponding prompt information thereof of client device, and described subscription information comprises the journal title of booking reader's information, subscription and subscribes to the start-stop phase;
Step 2, server by utilizing protection key are encrypted the digital periodical content of subscribing to, and for the booking reader of issue date within its subscription start-stop phase, according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof, then the digital periodical content of license file and encryption is pushed to this booking reader's client; With
Step 3, receive license file and encryption digital periodical content client according to this license file and when registration employed hardware information and corresponding prompt information the digital periodical content of encrypting is decrypted.
2. method according to claim 1 is characterized in that, described step 1 comprises:
The booking reader registers and subscribes to digital periodical respectively on its a plurality of clients, these clients are gathered the hardware information and the corresponding prompt information thereof of equipment separately respectively, and this hardware information and corresponding prompt information thereof and subscription information are sent to server together.
3. method according to claim 1 is characterized in that, described step 1 comprises:
The booking reader registers and subscribes to digital periodical on an one client, this client gather the hardware information of equipment of itself and other client device that this booking reader is registered hardware information and with these hardware information corresponding prompt information, and these hardware informations and corresponding prompt information thereof are sent to server with subscription information.
4. method according to claim 1 is characterized in that, the step of server generation license file comprises in the described step 2:
Utilize the hardware information generation encryption key of each client device of registration that the protection key is encrypted, form an enciphered message;
This enciphered message and corresponding prompt information thereof are generated an authorization together;
The a plurality of authorizations that generate are merged license file of generation.
5. method according to claim 4 is characterized in that, described step 3 comprises:
The information of using when registering according to described client finds corresponding authorization in the license file;
Utilize the hardware information generating solution decryption key of this client device that the enciphered message in this authorization is decrypted, key is protected;
Utilize this protection key that the digital periodical content of encrypting is decrypted.
6. method according to claim 4 is characterized in that, the step that the hardware information of described server by utilizing registration generates encryption key comprises:
Utilize Message Digest 5 that the hardware information of client device is carried out conversion, and utilize the information that obtains after the conversion to generate encryption key.
7. method according to claim 6 is characterized in that, described client utilizes Message Digest 5 that the hardware information of client device is carried out conversion, and utilizes the information generating solution decryption key that obtains after the conversion to be decrypted.
8. method according to claim 1 is characterized in that, described protection key uses the random key algorithm to generate.
9. method according to claim 1 is characterized in that, described information is the device name of relative client or the title of user's input.
10. method according to claim 9 is characterized in that, when the booking reader registers and subscribes to digital periodical, if the information of registration repeats, then allows the booking reader to revise information.
11. method according to claim 1, it is characterized in that, described subscription information also comprises the use right that is obtained according to different subscription conditions, comprise the right of the operations such as forwarding, download, duplicating, printing of the digital periodical content of deciphering and the quantity of registered client are limited that described subscription condition comprises toll condition etc.
12. method according to claim 1 is characterized in that, server is merged into the client of a file push to the booking reader with the digital periodical content of license file and encryption.
13. method according to claim 1 is characterized in that, also comprises:
Booking reader's any one from a plurality of clients that it has been registered sends the request of sweep equipment to server, comprise the hardware information of the equipment that sends this removal request and corresponding prompt information thereof and the information for the treatment of sweep equipment in this removal request
Server is after receiving removal request; the hardware information and the corresponding prompt information thereof of sweep equipment is treated in deletion from original log-on message; thereby the log-on message that obtains upgrading; and utilize the log-on message of this renewal and described protection key to generate license file, then the digital periodical content of this license file and encryption is pushed to this booking reader's registered client.
14. method according to claim 13 is characterized in that, also comprises: client is encrypted and is connected in series so that it is sent to server as parameter described removal request.
15. method according to claim 1 is characterized in that, also comprises:
Booking reader's any one from a plurality of clients that it has been registered sends the request of increase equipment to server, comprise the hardware information and the corresponding prompt information thereof of the equipment that sends this increase request and hardware information and the corresponding prompt information thereof of waiting to increase equipment in this increase request, the described hardware information of waiting to increase equipment and corresponding prompt information thereof are by sending the client device collection that this increases is asked
Server is after receiving the increase request; in original log-on message, increase hardware information and the corresponding prompt information thereof of waiting to increase equipment; thereby the log-on message that obtains upgrading; and utilize the log-on message of this renewal and described protection key to generate license file, then the digital periodical content of this license file and encryption is pushed to this booking reader's registered client.
16. method according to claim 15 is characterized in that, also comprises: client is encrypted and is connected in series so that it is sent to server as parameter described increase request.
17. method according to claim 1 is characterized in that, the hardware information of each client device comprises the characteristic information of n related hardware configuration of this client device, comprising non-existent n on this client device
0The characteristic information of individual related hardware configuration.
18. method according to claim 17 is characterized in that, the step of server generation license file comprises in the described step 2:
According to the hardware information that receives, select (t, n) value of the threshold parameter t in the threshold schemes:
Wherein, t represents the threshold value of the quantity of effective sub-key;
Described protection key is divided into n shared Sub key;
For each client device, hardware configuration binding with this n shared Sub key and this equipment, promptly utilize the characteristic information of n hardware configuration of this equipment that receives to generate n encryption key, be respectively applied for n the bit string that this n shared Sub key or this n shared Sub key are carried out obtaining after the conversion one by one and encrypt, generate the validity check information of each shared Sub key simultaneously; The value of threshold parameter t, the shared Sub key and the validity check information thereof of encryption are formed an enciphered message; This enciphered message and corresponding prompt information thereof are generated an authorization together;
The a plurality of authorizations that generate are merged license file of generation.
19. method according to claim 18 is characterized in that, described step 3 comprises:
The information of using when registering according to described client finds corresponding authorization in the license file;
Extract the characteristic information of n related hardware configuration of this client device, and utilize these characteristic informations to generate n decruption key, be respectively applied for the n in the enciphered message in this authorization shared Sub key or n bit string are decrypted;
Validity check information and (t according to each shared Sub key; n) threshold schemes; each shared Sub key to deciphering carries out validity check; if have t and above effective shared Sub key; then recover the protection key of digital periodical content according to these effective sub-keys; and utilize this protection key that the digital periodical content of encrypting is decrypted, otherwise key recovery failure.
20. the digital Journal subscription system with copyright protection, this system comprises:
A plurality of clients, be used for the booking reader thereon to server registration and subscribe to digital periodical, then log-on message and subscription information are sent to server, described log-on message comprises the hardware information and the corresponding prompt information thereof of client device, and described subscription information comprises the journal title of booking reader's information, subscription and subscribes to the start-stop phase; When receiving the digital periodical content of license file and encryption from server, employed hardware information and corresponding prompt information thereof are decrypted the digital periodical content of encrypting during according to this license file and registration; With
Server; be used to utilize the protection key that the digital periodical content of subscribing to is encrypted; and for the booking reader of issue date within its subscription start-stop phase; according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof, then the digital periodical content of license file and encryption is pushed to this booking reader's client.
21. system according to claim 20 is characterized in that, described server comprises:
Subscribe to processing unit, be used for receiving log-on message and subscription information, and log-on message and subscription information are sent to periodical encryption and granted unit from client;
Periodical is encrypted and granted unit, be used for utilizing the protection key that digital periodical content is encrypted, and for the booking reader of issue date within its subscription start-stop phase, according to protection key and hardware information from the log-on message that its client receives and corresponding prompt information generation license file thereof; With
Push unit is used for the digital periodical content of license file and encryption is pushed to client.
22. system according to claim 21 is characterized in that, described periodical is encrypted and granted unit comprises:
The periodical content unit is used for utilizing the protection key that digital periodical content is encrypted, and will protects key to send to the encryption key unit, and the digital periodical content of encrypting is sent to push unit;
The encryption key unit, be used to utilize from the hardware information of subscribing to the processing unit reception and generate encryption key encrypting from the protection key of periodical content unit reception, form an enciphered message, and this enciphered message sent to the license file generation unit, encryption key is sent to subscribe to the client-side information unit;
Subscribe to the client-side information unit, be used to generate from subscribing to the corresponding relation of processing unit information that receives and the encryption key that receives from the encryption key unit;
The license file generation unit, be used to utilize from subscribing to corresponding relation that the client-side information unit receives, generating an authorization from subscribing to information that processing unit receives and the enciphered message that receives from the encryption key unit, and a license file of a plurality of authorizations merging generations that will generate, then this license file is sent to push unit.
23. system according to claim 20 is characterized in that, described client comprises:
Collecting unit, the hardware information and the corresponding prompt information thereof of gathering this client equipment of itself, and this hardware information and information sent to registering unit as a log-on message;
Registering unit, the booking reader is by this registering unit registration and subscribe to digital periodical, and subscription information and log-on message are sent to server;
Receiving element is used to receive from the license file of server push and the digital periodical content of encryption, and license file is sent to the protection cipher key unit, and the digital periodical content of encrypting is sent to the digital periodical of deciphering unit;
The protection cipher key unit, the information of using when being used for according to registration finds the corresponding authorization of license file, and utilize the hardware information generating solution decryption key of this client that the enciphered message in this authorization is decrypted, the key that is protected, and will protect key to send to the digital periodical of deciphering unit; With
Decipher digital periodical unit, utilize the protection key that receives from the protection cipher key unit that the digital periodical content of the encryption that receives from receiving element is decrypted.
24. system according to claim 23 is characterized in that, described protection cipher key unit comprises:
The licence extraction unit, the information of using when being used for according to registration finds corresponding authorization at the license file that receives from receiving element, from this authorization, obtain corresponding enciphered message, and this enciphered message sent to separate the privacy protection cipher key unit;
Separate the privacy protection cipher key unit, utilize the hardware information generating solution decryption key of this client that the enciphered message that receives from the licence extraction unit is decrypted, key is protected.
25. according to right 23 described systems, it is characterized in that, the hardware information of himself equipment of described collecting unit collection and the hardware information of other client device that the booking reader is registered and with these hardware information corresponding prompt information, and these hardware informations and information are sent to registering unit as a log-on message.
26. system according to claim 20 is characterized in that, server is merged into the client of a file push to this booking reader with the digital periodical content of license file and encryption.
27. system according to claim 20, it is characterized in that, booking reader's any one from a plurality of clients that it has been registered sends the request of sweep equipment to server, comprise the hardware information of the equipment that sends this removal request and corresponding prompt information thereof and the information for the treatment of sweep equipment in this removal request
Server is after receiving removal request; the hardware information and the corresponding prompt information thereof of sweep equipment is treated in deletion from original log-on message; thereby the log-on message that obtains upgrading; and utilize the log-on message of this renewal and described protection key to generate license file, then the digital periodical content of this license file and encryption is pushed to this booking reader's registered client.
28. system according to claim 27 is characterized in that, client is encrypted and is connected in series so that it is sent to server as parameter described removal request.
29. system according to claim 20, it is characterized in that, booking reader's any one from a plurality of clients that it has been registered sends the request of increase equipment to server, comprise the hardware information and the corresponding prompt information thereof of the equipment that sends this increase request and hardware information and the corresponding prompt information thereof of waiting to increase equipment in this increase request, the described hardware information of waiting to increase equipment and corresponding prompt information thereof are by sending the equipment collection that this increases is asked
Server is after receiving the increase request; in original log-on message, increase hardware information and the corresponding prompt information thereof of waiting to increase equipment; thereby the log-on message that obtains upgrading; and utilize the log-on message of this renewal and described protection key to generate license file, then the digital periodical content of this license file and encryption is pushed to this booking reader's registered client.
30. system according to claim 29 is characterized in that, client is encrypted and is connected in series so that it is sent to server as parameter described increase request.
31. system according to claim 20 is characterized in that, the hardware information of each client device comprises the characteristic information of n related hardware configuration of this client device, comprising non-existent n on this client device
0The characteristic information of individual related hardware configuration.
32. system according to claim 31 is characterized in that, the step that server generates license file comprises:
According to the hardware information that receives, select (t, n) value of the threshold parameter t in the threshold schemes:
Wherein, t represents the threshold value of the quantity of effective sub-key;
Described protection key is divided into n shared Sub key;
For each client device, hardware configuration binding with this n shared Sub key and this equipment, promptly utilize the characteristic information of n hardware configuration of this equipment that receives to generate n encryption key, be respectively applied for n the bit string that this n shared Sub key or this n shared Sub key are carried out obtaining after the conversion one by one and encrypt, generate the validity check information of each shared Sub key simultaneously; The value of threshold parameter t, the shared Sub key and the validity check information thereof of encryption are formed an enciphered message; This enciphered message and corresponding prompt information thereof are generated an authorization together;
The a plurality of authorizations that generate are merged license file of generation.
33. system according to claim 32 is characterized in that, server is carried out following decryption step:
The information of using when registering according to described client finds corresponding authorization in the license file;
Extract the characteristic information of n related hardware configuration of this client device, and utilize these characteristic informations to generate n decruption key, be respectively applied for the n in the enciphered message in this authorization shared Sub key or n bit string are decrypted;
Validity check information and (t according to each shared Sub key; n) threshold schemes; each shared Sub key to deciphering carries out validity check; if have t and above effective shared Sub key; then recover the protection key of digital periodical content according to these effective sub-keys; and utilize this protection key that the digital periodical content of encrypting is decrypted, otherwise key recovery failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910241440.5A CN102088443B (en) | 2009-12-02 | 2009-12-02 | Method and system for subscribing digital periodical with copyright protection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910241440.5A CN102088443B (en) | 2009-12-02 | 2009-12-02 | Method and system for subscribing digital periodical with copyright protection |
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| CN102088443A true CN102088443A (en) | 2011-06-08 |
| CN102088443B CN102088443B (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910241440.5A Expired - Fee Related CN102088443B (en) | 2009-12-02 | 2009-12-02 | Method and system for subscribing digital periodical with copyright protection |
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