CN101330337A - Transmitting apparatus, receiving apparatus and transceiving apparatus - Google Patents
Transmitting apparatus, receiving apparatus and transceiving apparatus Download PDFInfo
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- CN101330337A CN101330337A CNA2008101253755A CN200810125375A CN101330337A CN 101330337 A CN101330337 A CN 101330337A CN A2008101253755 A CNA2008101253755 A CN A2008101253755A CN 200810125375 A CN200810125375 A CN 200810125375A CN 101330337 A CN101330337 A CN 101330337A
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- 238000000605 extraction Methods 0.000 claims description 49
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- 230000005540 biological transmission Effects 0.000 abstract 1
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- 238000005755 formation reaction Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The object of the present invention is to realize compatibility of the content protection by using limit receiving frame of MPEG-2 broadcast and the content protection by using a right such as OMA DRM. A transmission device transmits a first ciphering digital video bit stream (3) protected by using a first right information of PMT information and a cryptographic key information in ECM/EMM, and transmits the second ciphering digital video bit stream (29) protected by using ECM/EMM which is stored with a right object containing a second right information and a cryptographic key information and a right object identifying information. In a receiving device, the first ciphering digital video bit stream (62) is interpreted by the first right information of the PMT information and a cryptographic key information in ECM /EMM, and a second ciphering digital video bit stream (79) is interpreted by a second right information and a cryptographic key in ECM/EMM storing the right object identified by the right object identifying information.
Description
Technical field
The present invention relates to a kind of content distribution and relevant dispensing device, receiving system and R-T unit of broadcasting that comprises digital audio/video information.
Background technology
Fig. 8 is the block diagram that is illustrated in the structure of the R-T unit that has dispensing device and receiving system in the example in the past.In the dispensing device in the past 1500 shown in Fig. 8, the digital video bit stream 1 of abideing by MPEG-2 video (ISO/IEC13818-2) that should send is input to and adds compact part 1504.Add in the compact part 1504 at this, imported key 1503 from ECM/EMM generating unit 1501.ECM/EMM generating unit in the example 1501 generated ECM/EMM information 1502 and key 1503 in the past, and wherein ECM/EMM information 1502 is that ECM (Entitlement Control Message) and specific information are that EMM (Entitlement Management Message) is constituted by comprising the public information that limits reception information.Add compact part 1504 and utilize key 1503 that digital video bit stream 1 is encrypted, and encrypted digital video bit stream 1505 is exported to multiplexed 1506.Multiplexed 1506 encrypted digital video bit stream 1505 and ECM/EMM information 1502 is multiplexed into MPEG-2TS (Transport Stream) and exports multiplexed information 1507.Modulation portion 1508 is modulated multiplexed information 1507 by OFDM (OFDM), and dispensing device 1500 transmits the modulation signal 1509 that is generated to receiving system 1600.
In receiving system 1600 in the past, demodulation section 1601 carries out demodulation with modulation signal 1509, output multiplexed information 1600.Separated part 1603 is according to multiplexed information 1602 output ECM/EMM information 1604 and encrypted digital video bit streams 1607.Extract key information 1606 the ECM/EMM information 1604 of ECM/EMM extraction unit 1605 after separating, offer decryption part 1608.Decryption part 1608 utilizes key information 1606 that encrypted digital video bit stream 1607 is decrypted, and generates output digital video bit stream 1609.
As shown in Figure 8, in dispensing device 1500 in the past, digital video bit stream 1 utilizes key 1503 to encrypt in adding compact part 1504, generates encrypted digital video bit stream 1505, sends multiplexed 1506 to.
In addition, in ECM/EMM generating unit 1501 in the past, generate the ECM/EMM information 1502 that has merged public information ECM and specific information EMM, send multiplexed 1506 to, wherein public information ECM comprise could the rating program relevant information and key 1503, specific information EMM comprises and is used to untie the information encrypted of ECM and receives CAMEL-Subscription-Information.By multiplexed 1506 encrypted digital video bit stream 1505 and ECM/EMM information 1502 are carried out multiplexedly, and be input to modulation portion 1508 as multiplexed information 1507.In modulation portion 1508, implement the OFDM modulation and generation modulation signal 1509 and output.
On the other hand, in receiving system 1600 in the past, demodulation section 1601 carries out demodulation with modulation signal 1509, and output multiplexed information 1602.Extract demodulation ECM/EMM information 1604 and demodulation encrypted digital video bit stream 1607 multiplexed information 1602 of separated part 1603 after demodulation.Extract key information 1606 the ECM/EMM information 1604 of ECM/EMM extraction unit 1605 after separating and offer decryption part 1608.Decryption part 1608 utilizes key information 1606 that encrypted digital video bit stream 1607 is decrypted and output digital video bit stream 1609 is exported.
Illustrated R-T unit in the past in the above-mentioned background technology is limited in the scope based on the use in the digital broadcasting of ECM/EMM.Yet, in mobile phone and IP (Internet Protocol) transmit, expect among the DRM (Digital RightsManagement) of OMA (Open Mobile Alliance) of use, be the encrypted content that will not only comprise the form of ISO14496-12 file format, but also the right object information that comprises right information and key information be transformed into the information of documentation.Therefore,, just can not transmit, can't realize both compatibility by digital broadcasting illustrated in background technology as employed right object in OMA, DRM.
Summary of the invention
The present invention considers above-mentioned problem, and its purpose is to provide a kind of structure that has realized utilizing ECM/EMM to protect, and utilizes dispensing device, receiving system and the R-T unit of the compatibility between the structure that right object protects.
In order to reach the purpose that solves described problem, relate to the dispensing device of first viewpoint of the present invention, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The one EMM generating unit, it generates the 3rd key, and generate an EMM (EntitlementManagement Message), a described EMM is encrypted, generate an EMM information, wherein an EMM comprises described the 3rd key of generation, described right object, described right object identifying information and receiving system identifying information;
The one ECM generating unit, its generation comprise an ECM (EntitlementControl Message) of described first key, and a described ECM who utilizes described the 3rd key to generate encrypts, and generate an ECM information; With
Multiplexed portion, it carries out a described ECM information, a described EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information.
Relate to the dispensing device of second viewpoint of the present invention, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The 2nd EMM generating unit, it generates the 3rd key, and generates the 2nd EMM according to described the 3rd key and the receiving system identifying information that generate, and described the 2nd EMM is encrypted, and generates the 2nd EMM information;
The 2nd ECM generating unit, its generation comprise the 2nd ECM of described first key, described right object and described right object identifying information, and described the 2nd ECM that utilizes described the 3rd key to generate encrypts, and generate the 2nd ECM information; With
Multiplexed portion, it carries out described the 2nd ECM information, described the 2nd EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information.
Relate to the receiving system of the 3rd viewpoint of the present invention, it has:
Separated part, it will be imported multiplexed information and separate the ECM information after output is encrypted, an EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The one EMM decryption part, it is from a described EMM information extraction receiving system identifying information, right object and the 3rd key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The one ECM decryption part, it utilizes described the 3rd key from a described ECM information the one ECM to be decrypted, and exports first key;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
Relate to the receiving system of the 4th viewpoint of the present invention, it has:
Separated part, it will be imported multiplexed information and separate the 2nd ECM information after output is encrypted, the 2nd EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The 2nd EMM decryption part, it is from described the 2nd EMM information extraction receiving system identifying information and the 3rd key;
The 2nd ECM decryption part, it utilizes described the 3rd key from described the 2nd ECM information the 2nd ECM to be decrypted, and extracts the right object and first key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
The R-T unit that relates to the 5th viewpoint of the present invention, it possesses dispensing device and receiving system,
Described dispensing device, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The one EMM generating unit, it generates the 3rd key, and generate an EMM (EntitlementManagement Message), a described EMM is encrypted, generate an EMM information, wherein an EMM comprises described the 3rd key of generation, described right object, described right object identifying information and receiving system identifying information;
The one ECM generating unit, its generation comprise an ECM (EntitlementControl Message) of described first key, and a described ECM who utilizes described the 3rd key to generate encrypts, and generate an ECM information; With
Multiplexed portion, it carries out a described ECM information, a described EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information,
Described receiving system, it has:
Separated part, it will be imported multiplexed information and separate the ECM information after output is encrypted, an EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The one EMM decryption part, it is from a described EMM information extraction receiving system identifying information, right object and the 3rd key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The one ECM decryption part, it utilizes described the 3rd key from a described ECM information the one ECM to be decrypted, and exports first key;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
The R-T unit that relates to the 6th viewpoint of the present invention, it possesses dispensing device and receiving system,
Described dispensing device, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The 2nd EMM generating unit, it generates the 3rd key, and generates the 2nd EMM according to described the 3rd key and the receiving system identifying information that generate, and described the 2nd EMM is encrypted, and generates the 2nd EMM information;
The 2nd ECM generating unit, its generation comprise the 2nd ECM of described first key, described right object and described right object identifying information, and described the 2nd ECM that utilizes described the 3rd key to generate encrypts, and generate the 2nd ECM information; With
Multiplexed portion, it carries out described the 2nd ECM information, described the 2nd EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information,
Described receiving system, it has:
Separated part, it will be imported multiplexed information and separate the 2nd ECM information after output is encrypted, the 2nd EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The 2nd EMM decryption part, it is from described the 2nd EMM information extraction receiving system identifying information and the 3rd key;
The 2nd ECM decryption part, it utilizes described the 3rd key from described the 2nd ECM information the 2nd ECM to be decrypted, and extracts the right object and first key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
Relate to the dispensing device of the 7th viewpoint of the present invention, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The 3rd EMM generating unit, it generates the 3rd EMM (Entitlement ManagementMessage) and it is encrypted, and generates the 3rd EMM information, and wherein the 3rd EMM comprises described right object, described right object identifying information and receiving system identifying information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM (EntitlementControl Message) of described first key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information; With
Multiplexed portion, it carries out described the 3rd ECM information, described the 3rd EMM information and described first enciphered message multiplexed, the output multiplexed information.
Relate to the dispensing device of the 8th viewpoint of the present invention, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
The 4th EMM generating unit, its generation comprise the 4th EMM (Entitlement Management Message) of receiving system identifying information, encrypt the described the 4th, generate the 4th EMM information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM (EntitlementControl Message) of described first key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information;
Multiplexed portion, it carries out described the 3rd ECM information, described the 4th EMM information and described first enciphered message multiplexed, the output multiplexed information;
First authentication department, it authenticates the target side that sends described right object; With
First Department of Communication Force, its authentication information to described first authentication department is received and dispatched, and sends described right object.
Relate to the dispensing device of the 9th viewpoint of the present invention, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
The 5th EMM (Entitlement Management Message) that the 5th EMM generating unit, its generation comprise the receiving system identifying information and second key encrypts described the 5th EMM, generates the 5th EMM information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM (EntitlementControl Message) of described second key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information;
Multiplexed portion, it carries out described the 3rd ECM information, described the 5th EMM information, described first enciphered message and described first right information multiplexed, the output multiplexed information;
First authentication department, it authenticates the target side that sends described right object; With
First Department of Communication Force, its authentication information to described first authentication department is received and dispatched, and sends described right object.
Relate to the receiving system of the tenth viewpoint of the present invention, it has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 3rd EMM information and first enciphered message after the encryption;
The 3rd EMM decryption part, it is from described the 3rd EMM information extraction receiving system identifying information and right object;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key; With
The 3rd decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information.
The receiving system that relates to the 11 viewpoint of the present invention, it has:
Separated part, it will be imported multiplexed information and separate the 4th ECM information after output is encrypted, the 4th EMM information and first enciphered message after the encryption;
The 4th EMM decryption part, it is from described the 4th EMM information extraction receiving system identifying information;
Second authentication department, its butt joint is retaken the power the target side of sharp object and is authenticated;
Second communication portion, its authentication information to described second authentication department is received and dispatched, and receives described right object.
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 4th ECM decryption part, it utilizes described second key from described the 4th ECM information the 4th ECM to be decrypted, and exports first key; With
The 3rd decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information.
The receiving system that relates to the 12 viewpoint of the present invention, it has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 3rd EMM information and first enciphered message after the encryption;
The 3rd EMM decryption part, it is from described the 3rd EMM information extraction receiving system identifying information and right object;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key;
The 3rd decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information; With
First efferent, it exports described input multiplexed information and described right object.
The receiving system that relates to the 13 viewpoint of the present invention, it has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 5th EMM information, first enciphered message and the PMT information after the encryption;
The 5th EMM decryption part, it is from described the 5th EMM information extraction receiving system identifying information and second key;
The first right information extraction unit, it is from described PMT information extraction first right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second efferent, it exports described input multiplexed information.
The R-T unit that relates to the 14 viewpoint of the present invention, it possesses dispensing device, receiving system and external device (ED),
Described dispensing device, it has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
The 5th EMM (Entitlement Management Message) that the 5th EMM generating unit, its generation comprise the receiving system identifying information and second key encrypts described the 5th EMM, generates the 5th EMM information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM (EntitlementControl Message) of described second key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information;
Multiplexed portion, it carries out described the 3rd ECM information, described the 5th EMM information, described first enciphered message and described first right information multiplexed, the output multiplexed information;
First authentication department, it authenticates the target side that sends described right object; With
First Department of Communication Force, its authentication information to described first authentication department is received and dispatched, and sends described right object,
Described receiving system, it has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 5th EMM information, first enciphered message and the PMT information after the encryption;
The 5th EMM decryption part, it is from described the 5th EMM information extraction receiving system identifying information and second key;
The first right information extraction unit, it is from described PMT information extraction first right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second efferent, it exports described input multiplexed information,
Described external device (ED), it has:
The 3rd authentication department, its butt joint is retaken the power the target side of sharp object and is authenticated;
Third communication portion, its authentication information to described the 3rd authentication department is received and dispatched, and receives described right object;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key; With
Second decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information.
In relating to dispensing device of the present invention, receiving system and R-T unit; have unexistent in the past special effect, it is for the structure that can realize utilizing ECM/EMM to protect, be used in compatibility between the structure that right object such among the OMA DRM protects with utilization.
Description of drawings
Fig. 1 is the block diagram of the formation of the expression R-T unit that has the dispensing device that relates to embodiments of the present invention 1 and receiving system.
Fig. 2 is the block diagram of the formation of the expression R-T unit that has the dispensing device that relates to embodiments of the present invention 2 and receiving system.
Fig. 3 is the block diagram of the formation of the expression R-T unit that has the dispensing device that relates to embodiments of the present invention 3 and receiving system.
Fig. 4 is the block diagram of the formation of the expression R-T unit that has the dispensing device that relates to embodiments of the present invention 4 and receiving system.
Fig. 5 is the block diagram of the formation of the expression R-T unit that has the dispensing device that relates to embodiments of the present invention 5 and receiving system and external device (ED).
Fig. 6 is the block diagram of the formation of the expression R-T unit that has the dispensing device that relates to embodiments of the present invention 6 and receiving system and external device (ED).
Fig. 7 is the block diagram of the formation of external device (ED) in execution mode 6.
Fig. 8 is a block diagram of representing the formation of R-T unit in the past.
Embodiment
Below, utilize accompanying drawing that the preferred implementation that relates to dispensing device of the present invention, receiving system and R-T unit is described.
(execution mode 1)
Fig. 1 is the block diagram of the formation of the expression R-T unit that has the dispensing device 100 that relates to embodiments of the present invention 1 and receiving system 200.
The dispensing device 100 of execution mode 1 as shown in Figure 1, it for example is video server by operator's utilization, add first and to utilize first key 5 to encrypt in the compact part 2, generate the first encrypted digital video bit stream 3 as first enciphered message as the digital video bit stream 1 of input digit information.The first encrypted digital video bit stream 3 that is generated is transmitted to multiplexed 30.In addition, add second and to utilize second key 11 that digital video bit stream 1 is encrypted in the compact part 28, generate the second encrypted digital video bit stream 29 as second enciphered message.Then, the second encrypted digital video bit stream 29 that is generated is transmitted to multiplexed 30.
In the dispensing device of execution mode 1, also be provided with: an ECM generating unit 6, it generates and an ECM information 7 of encrypting with first key 5; The first right information generating unit 8, it generates first right information 9; The second key generating unit 10, it generates second key 11; The second right information generating unit 12, it generates second right information 13; Right object generating unit 14, it generates right object 15; Right object identifying information generating unit 16, it generates right object identifying information 17; The one EMM generating unit 18, its generation comprise right object 15 and right object identifying information 17 and encrypted EMM information 19 and the 3rd key 20; With modulation portion 32, it utilizes the modulation system of OFDM (Orthogonal Frequency Division Multiplexing, OFDM) that first multiplexed information 31 from multiplexed 30 is modulated.
On the other hand, receiving system 200 is set-top box of consumer's one side, and first modulation intelligence 33 that demodulation section 49 will receive carries out demodulation, and first multiplexed information 50 is offered separated part 51.Separated part 51 isolates an EMM information 52, an ECM information 55, PMT (Program Map Table, Program Map Table) information 59 from first multiplexed information 50, as the first encrypted digital video bit stream 62 of first enciphered message with as the second encrypted digital video bit stream 79 of second enciphered message.In addition, in receiving system 200, be provided with: an EMM decryption part 53, it is transfused to an EMM information 52; The one ECM decryption part 57, it extracts first key 58 that provides the 3rd key 54 that an EMM decryption part 53 is extracted; Right object separated part 72, it is transfused to from the right object 71 of an EMM decryption part 53 and isolates second key 73 and the second right information data 76; The second right information deciphering portion 77, it extracts second right information 78 from the second capability information data 76; Second decryption part 80, it is decrypted the second encrypted digital video bit stream 79 according to second key 73 and second right information 78, exports second digital video bit stream 81; The first right information extraction unit 60, it extracts first right information 61 from PMT information 59; With first decryption part 63, it is decrypted the first encrypted digital video bit stream 62 that is separated with first right information 61 according to first key 58, exports first digital video bit stream 3.
In dispensing device shown in Figure 1 100, first key 5 that utilization is generated by an ECM generating unit 6, add compact part 2 through first, will encrypt as the digital video bit stream 1 of input digit information, and export as the first encrypted digital video bit stream 3.
The ECM structure that expression generates through an ECM generating unit 6 in table 1.As shown in table 1, and then the ECM paragraph header is partly deposited ECM in an ECM.ECM is made of fixed part and variable institute.And then protocol number and cause body identifying information and deposit first key 5 in fixed part.
[table 1]
Table 1 an ECM structure
By the 3rd key 20 that is generated by an EMM generating unit 18 ECM is encrypted, the ECM information 7 that generates thus sends multiplexed 30 to.
The first right information generating unit 8 generates first right information 9 and sends multiplexed 30 to.Deposit in first right information 9 in PMT (the Program Map Table) information for multiplexed 30 and carry out multiplexed.First right information 9 is copy control information CCI (Copy ControlInformation), duplicate control by 2 bits, and comprise freely the information that (copy freely), a generation are duplicated (one-generation copy), no longer duplicated (no more copy) and forbid duplicating of duplicating.At this moment and since first right information 9 in PMT by multiplexed, not protected so it becomes expressly form.
On the other hand, utilize second key 11 that is generated by the second key generating unit 10, add compact part 28 through second digital video bit stream 1 is encrypted, export as the second encrypted digital video bit stream 29.Send second key 11 to right object generating unit 14.The second right generating unit 12 generates second right information 13 and sends right object generating unit 14 to.Second right information 13 is the information of recording and narrating as with XML (extensible Markup Language).Right object generating unit 14 generates the right object information 15 that comprises second key 11 and second right information 13, sends an EMM generating unit 18 to.
Generate to be used to represent to be the right object identifying information 17 of rights object through right object identifying information generating unit 16, and be input to an EMM generating unit 18.The EMM that the one EMM generating unit 18 will comprise right object identifying information 17 and right object 15 encrypts, and generates an EMM information 19, sends multiplexed 30 to.Second right information 13 is encrypted and be protected as the part of an EMM.
Expression the one EMM structure in table 2.As shown in table 2, EMM paragraph header part and deposit the data of EMM1～EMMn and then in an EMM.EMM1 is divided into fixed part and variable portion.In fixed part, deposit: as the card ID (receiving system identifying information) of the receiving system 200 that receives CAMEL-Subscription-Information; The byte long of relevant information; Protocol number; Cause body identifying information, it is for receiving the coding that the cause body in the broadcasting utilization is discerned to limiting; Update number, its increase when upgrading number; With valid expiration date information.In variable, record and narrate descriptor " EncKey descriptor " and deposit the 3rd key.In addition, the descriptor " ROdescriptor " that is equivalent to right object identifying information 17 in record is recorded and narrated the right object that comprises second key and second right information afterwards.As for receiving system 200, if in variable, recorded and narrated the existence that descriptor " RO descriptor " then can be known the aforesaid right object.The fixed part of EMM2～EMMn is deposited the data same with EMM1, has deposited clear data for this execution mode 1 variable portion.
CRC (Cyclic Redundancy Check) is a check code in EMM structure.
[table 2]
Table 2 an EMM structure
Multiplexed 30 the first encrypted digital video bit stream 3, the second encrypted digital video bit stream 29, an ECM information 7, an EMM information 19 and first right information 9 are carried out multiplexedly, and this first multiplexed information 31 offered modulation portion 32.32 pairs first multiplexed informations of modulation portion 31 are implemented the OFDM modulation, and first modulation signal 33 is outputed to receiving system 200.
On the other hand, first modulation signal 33 that receives in receiving system 200 carries out demodulation through demodulation section 49, exports first multiplexed information 50.Isolate an EMM information 52, an ECM information 55, PMT information 59, the first encrypted digital video bit stream 62 and the second encrypted digital video bit stream 79 first multiplexed information 50 of separated part 51 after demodulation.The first right information extraction unit 60 is extracted first right information 61 from PMT information 59 and is offered first decryption part 63.
Input the one EMM information 52 in an EMM decryption part 53.The one EMM decryption part 53 the byte long of the card ID of the receiving system shown in the his-and-hers watches 2 200 (receiving system identifying information), relevant information, protocol number, as to limit the cause body identifying information that receives the coding that the cause body in the broadcasting utilization discerns, increase when upgrading number update number and when valid expiration date, information was extracted, in an EMM structure, detect the descriptor " EncKeydescriptor " of variable portion, and the 3rd key 54 that extracts after this is input to ECM decryption part 57.ECM information 55 after the one ECM decryption part 57 utilizes the 3rd key 54 to encrypt is decrypted, and exports first key 58.
In addition, the descriptor " RO descriptor " of 53 pairs of variable portions of an EMM decryption part detects, and extracts right object 71 and offers right object separated part 72.At this moment, owing to be the descriptor form, if, even without " RO descriptor ", because an EMM decryption part 53 will only be handled " EncKey descriptor " and misoperation can not take place.
Right object separated part 72 is extracted second key 73 and is offered decryption part 80, extracts the second right information data 76 and offers the second right information deciphering portion 77.The second right information deciphering portion 77 understands second right information 78 and extracts from the second right information data 76, offer second decryption part 80.
As mentioned above, in receiving system 200, can make by leaving first right information 61 among the PMT in and be included in the deciphering that the key information in the ECM/EMM carries out the first encrypted digital video bit stream 62, and the deciphering that the second encrypted digital video bit stream 79 carries out is in harmonious proportion mutually by right information and the key that in the ECM/EMM that comprises the right object of being discerned by the right object identifying information 71, is comprised.Therefore; in the R-T unit that relates to embodiments of the present invention 1, can realize will be by the content protecting that framework carried out of ECM/EMM, and utilize compatibility between the content protecting that right object carried out as OMA DRM as the structure of receiving system privacy protection.
(execution mode 2)
Fig. 2 is the block diagram of the formation of the expression R-T unit that has the dispensing device 300 that relates to embodiments of the present invention 2 and receiving system 400.In Fig. 2, with above-mentioned execution mode 1 in R-T unit have on the position of identical function and formation in fact and give identical symbol, the explanation in the execution mode 1 is quoted in its explanation.In the R-T unit of execution mode 2, the difference bigger with the R-T unit of execution mode 1 is that it constitutes: the 2nd ECM generating unit 21 in dispensing device 300 and the 2nd EMM generating unit 23; And in receiving system 400 the 2nd EMM decryption part 67 and the 2nd ECM decryption part 69.
In the dispensing device 300 among the R-T unit of execution mode 2, the 2nd EMM generating unit generates the 2nd EMM information 24 after the 3rd key 20 and the encryption, the 3rd key 20 is offered the 2nd ECM generating unit 21, the 2nd EMM information 24 is offered multiplexed 30.Input right object 15, right object identifying information 17 and the 3rd key 20 in the 2nd ECM generating unit 21, the 2nd ECM information 22 after generating first key 5 and encrypting.Generate second multiplexed information 34 for multiplexed 30 and offer modulation portion 32.In modulation portion 32, second multiplexed information 34 modulated and generate second modulation signal 36 send receiving system to.
On the other hand, in the receiving system 400 among the R-T unit of execution mode 2, second modulation signal 36 that receives carries out demodulation through demodulation section 49, and second multiplexed information 65 after the demodulation is input to separated part 51.
Extract and isolate PMT (Program Map Table) information 59 and the first encrypted digital video bit stream 62 and the second encrypted digital video bit stream 79 and the 2nd EMM information 66 and the 2nd ECM information 68 second multiplexed information 65 of separated part 51 after demodulation.Isolated the 2nd EMM information 66 sends the 2nd EMM decryption part 67 in separated part 51, extracts the 3rd key 54.The 3rd key 54 that the 2nd EMM decryption part 67 is extracted sends the 2nd ECM decryption part 69 to the 2nd ECM information 68, and extracts first key 58 and right object 71.
In dispensing device shown in Figure 2 300, will utilize first key 5 that is generated by the 2nd ECM generating unit 21 as the digital video bit stream 1 of input digit information, add compact part 2 through first and encrypt, export as the first encrypted digital video bit stream 3.
Generate second key 11 through the second key generating unit 10, send right object generating unit 14 and second to and add compact part 28.The second right information generating unit 12 generates second right information 13 and offers right object generating unit 14.Right object generating unit 14 generates the right object 15 that comprises second key 11 and second right information 13, offers the 2nd ECM generating unit 21.
Generate the right object identifying information 17 that is used to be expressed as right object 15 through right object identifying information generating unit 16, this right object identifying information 17 is input to the 2nd ECM generating unit 21.
The 2nd ECM structure that expression is generated by the 2nd ECM generating unit 21 in table 3.As shown in table 3, and then the ECM paragraph header has partly been deposited ECM in the 2nd ECM.ECM is made of fixed part, variable institute.And then protocol number and cause body identifying information and deposited first key 5 in fixed part.
In variable, record and narrate " the RO descriptor " that be equivalent to right object identifying information 17, after this, record and narrate the right object 15 that comprises second key 11 and second right information 13.As for receiving system 400, in variable,, then can know the existence of aforesaid right object if record has " RO descriptor ".Owing in ECM, deposited right object 15 as public information, with execution mode 1 differently right object 15 will deposit as public information.
[table 3]
Table 3 the 2nd ECM structure
The 2nd ECM generating unit 21, the 2nd ECM that will comprise right object 15 and right object identifying information 17 encrypts by the 3rd key 20 that is generated by the 2nd EMM generating unit 23, generates the 2nd ECM information 22.Send the 2nd ECM information 22 that is generated to multiplexed 30.
In addition, second key 11 that will be generated by the second key generating unit 10 sends second to and adds compact part 28, to be used for the encryption of digital video bit stream 1.Send multiplexed 30 in second digital video bit stream 1 that will add after encrypting in the compact part 28 to as the second encrypted digital video bit stream 29.
Expression the 2nd EMM structure in table 4.As shown in table 4, EMM paragraph header part and deposit the data of EMM1～EMMn and then in the 2nd EMM.EMM1 is divided into fixed part and variable portion.Fixed part is deposited: as the card ID (receiving system identifying information) of the receiving system 400 that receives CAMEL-Subscription-Information; The byte long of relevant information; Protocol number; Cause body identifying information, it is for receiving the coding that the cause body in the broadcasting utilization is discerned to limiting; Update number, its increase when upgrading number; Valid expiration date information with specific information.In variable, record and narrate " EncKey descriptor " and after this deposit the 3rd key.The fixed part of EMM2～EMMn is deposited the data same with EMM1, has deposited clear data for these execution mode 2 variable portions.
[table 4]
Table 4 the 2nd EMM structure
The first right information generating unit 8 generates first right information 9 and offers multiplexed 30.Multiplexed 30 first right information is multiplexed into PMT.At this, first right information 9 is Copy Info CCI (Copy Control Information), duplicates control by 2 bits, and comprise freely duplicate, a generation is duplicated, the information of no longer duplicating and forbidding duplicating.
Carry out the first encrypted digital video bit stream 3, the second encrypted digital video bit stream 29, the 2nd ECM information 22, the 2nd EMM information 24 and first right information 9 multiplexed for multiplexed 30, and generate second multiplexed information 34, and second multiplexed information 34 that is generated is offered modulation portion 32.Second modulation signal 36 of modulation has been carried out in modulation portion 32 outputs to second multiplexed information 34 by the modulation system of OFDM (OFDM).
On the other hand, in receiving system 400, second modulation signal 36 that receives carries out demodulation through demodulation section 49, generates second multiplexed information 65.Second multiplexed information 65 that is generated is input to separated part 51.Second multiplexed information 65 of separated part 51 after demodulation the first encrypted digital video bit stream 62, the second encrypted digital video bit stream 79, PMT information 59, the 2nd EMM information 66 are separated respectively with the 2nd ECM information 68.Send the 2nd EMM information 66 to the 2nd EMM decryption part 67.The 2nd EMM decryption part 67 the byte long of the card ID of the receiving system shown in the his-and-hers watches 4 400 (receiving system identifying information), relevant information, protocol number, as to limit the cause body identifying information that receives the coding that the cause body in the broadcasting utilization discerns, increase when upgrading number update number and when valid expiration date, information was extracted, " EncKey descriptor " to the variable portion in the 2nd EMM structure detects, and after this extracts the 3rd key 54 and sends the 2nd ECM decryption part 69 to.
The 2nd ECM information 68 after the 2nd ECM decryption part 69 utilizes the 3rd key 54 to encrypt is decrypted and obtains the 2nd ECM, sends first key 58 to first decryption part 63.
Detect among the 2nd ECM decryption part 69 variable in the 2nd ECM structure shown in the table 3 " RO descriptor ", extract right object 71, be input to right object separated part 72.
Right object separated part 72 is extracted the 3rd key 73, sends second decryption part 80 to, extracts the second right information data 76 and sends the second right information deciphering portion 77 to.The second right information deciphering portion 77 extracts second right information 78 and offers second decryption part 80.
As mentioned above, in receiving system 400, can make by leaving first right information 61 among the PMT in and be included in the deciphering that the key information in the ECM/EMM carries out the first encrypted digital video bit stream 62, and the deciphering that the second encrypted digital video bit stream 79 carries out is in harmonious proportion mutually by right information and the key that in the ECM/EMM that comprises the right object of being discerned by the right object identifying information 71, is comprised.Therefore, in the R-T unit that relates to embodiments of the present invention 2, can realize will by the content protecting that framework carried out of ECM/EMM, with the compatibility of utilizing the content protecting that right object carried out as OMA DRM as serving public structure.
And, in above-mentioned execution mode 1 and execution mode 2, even obviously adopt the object of having encrypted to set up too as right object itself.
In addition, in above-mentioned execution mode 1 and execution mode 2, though be illustrated at the situation of digital video bit stream,, obviously set up too for the digital sound bit stream.
In addition, in above-mentioned execution mode 1 and execution mode 2, though be illustrated for first digital video bit stream and the simultaneous situation of second digital video bit stream,, obviously set up too for the situation of having only second digital video bit stream to exist.(execution mode 3)
Fig. 3 is the block diagram of the formation of the expression R-T unit that has the dispensing device 500 that relates to embodiments of the present invention 3 and receiving system 600.And, in Fig. 3, with above-mentioned each execution mode in R-T unit have on the position of identical function and formation in fact and give identical symbol, the explanation of this execution mode is quoted in its explanation, omits detailed explanation at execution mode 3.
In the dispensing device 500 of execution mode shown in Figure 33, add first and to utilize first key 5 to encrypt in the compact part 2 as the digital video bit stream 1 of input digit information, generate the first encrypted digital video bit stream 3 as first enciphered message.Send the first encrypted digital video bit stream 3 that is generated to multiplexed 30.
In the dispensing device of execution mode 3, also be provided with: the 3rd ECM generating unit 506, it generates the 3rd ECM information 507 after first key 5 and the encryption; The second key generating unit 10, it generates second key 11; The second right object information generating unit 12, it generates the second right object information 13; Right object generating unit 14, it generates right object 15; The 3rd EMM generating unit 518, its generation comprise right object 15 and right object identifying information 17 and have carried out the 3rd EMM information 519 of encrypting; With modulation portion 32, its modulation system by OFDM (OFDM) is modulated.
On the other hand, in receiving system 600, the 3rd modulation signal 53 that demodulation section 49 will receive carries out demodulation, and the 3rd multiplexed information 650 is offered separated part 51.Isolate the 3rd EMM information 652 and the 3rd ECM information 655 and the first encrypted digital video bit stream 62 the 3rd multiplexed information 650 of separated part 51 after demodulation.In addition, in receiving system 600, be provided with: the 3rd EMM decryption part 653, it is transfused to the 3rd EMM information 652; Right object separated part 72, it is transfused to from the right object 671 of the 3rd EMM decryption part 653 and isolates second key 73 and the second right information data 76; The 3rd ECM decryption part 657, it has been supplied to second key 73 that right object separated part 72 separated and has extracted first key 58; The second right information deciphering portion 77, it extracts second right information 78 from the second right information data 76; With the 3rd decryption part 663, the first encrypted digital video bit stream 62 after it will separate according to first key 58 and second right information 78 is decrypted, and exports first digital video bit stream 64.
In dispensing device shown in Figure 3 500, utilizing first key 5 that is generated by the 3rd ECM generating unit 506 to add compact part 2 through first as the digital video bit stream 1 of input information encrypts, sends multiplexed 30 to as the first encrypted digital video bit stream 3.
Same by the 3rd ECM structure and table 1 that the 3rd ECM generating unit 506 is generated.
By second key 11 that is generated by the second key generating unit 10 the 3rd ECM is encrypted, generate the 3rd ECM information 507.Send the 3rd ECM information 507 that is generated to multiplexed 30.
On the other hand, second key 11 that is generated by the second key generating unit 10 sends right object generating unit 14 to.The second right information generating unit 12 generates second right information 13 and sends right object generating unit 14 to.Second right information 13 is recorded and narrated with XML (eXtensible Markup Language).Right object generating unit 14 generates the right object information 15 that comprises second key 11 and second right information 13, sends the 3rd EMM generating unit 518 to.
The 3rd EMM that the 3rd EMM generating unit 518 will comprise right object 15 encrypts and generates the 3rd EMM information 519, sends multiplexed 30 to.Second right information 13 is encrypted and be protected as the part of an EMM.
Expression the 3rd EMM structure in table 5.As shown in table 5, EMM structure shown in the 3rd EMM and the table 2 compares, the formation of variable portion is different, in variable, record is equivalent to the descriptor " RO descriptor " of right object identifying information 17, after this, recorded and narrated the right object that comprises second key and second right information.As for receiving system 600, in variable, if recorded and narrated the existence that descriptor " RO descriptor " then can be known the aforesaid right object.
CRC (Cyclic Redundancy Check) is a check code.
[table 5]
Table 5 the 3rd EMM structure
Multiplexed 30 the first encrypted digital video bit stream 3, the 3rd ECM information 507, the 3rd EMM information 519 are carried out multiplexedly, and this 3rd multiplexed information 531 offered modulation portion 32.The 3rd modulation signal 533 after modulation portion 32 will be modulated the 3rd multiplexed information 531 by the modulation system of OFDM (OFDM) is exported to receiving system 600.
On the other hand, in receiving system 600, the 3rd received modulation signal 533 is carried out demodulation, export the 3rd multiplexed information 650 by demodulation section 49.Isolate the 3rd EMM information 652, the 3rd ECM information 655 and the first encrypted digital video bit stream 62 the 3rd multiplexed information 650 of separated part 51 after demodulation.
The 3rd EMM information 652 adds the 3rd EMM decryption part 653.The 3rd EMM decryption part 653 the byte long of the card ID of the receiving system shown in the his-and-hers watches 5 600 (receiving system identifying information), relevant information, protocol number, as to limit the cause body identifying information that receives the coding that the cause body in the broadcasting utilization discerns, increase when upgrading number update number and when valid expiration date, information was extracted, in the 3rd EMM structure, detect the descriptor " RO descriptor " of variable portion, and extraction right object 671 offers right object separated part 72.
Right object separated part 72 is extracted second key 73 and is offered the 3rd ECM composite part 657, extracts the second right information data 76 and offers the second right information deciphering portion 77.The 3rd ECM decryption part 657 is decrypted by second key 73 and extracts the 3rd ECM, and first key 58 is offered the 3rd decryption part 663.The second right information deciphering portion 77 understands from the second right information data 76 and extracts second right information 78, and offers the 3rd decryption part 663.
The 3rd decryption part 663 utilizes first key 58 and second right information 78 that the first encrypted digital video bit stream 62 is decrypted, and exports as first digital video bit stream 64.
As mentioned above, in receiving system 600, can realize the deciphering of the first encrypted digital video bit stream 62 being carried out by right information that in the ECM/EMM that comprises right object 671, is comprised and key.Therefore, in the R-T unit that relates to embodiments of the present invention 3, can realize the structure as a kind of protection, it utilizes ECM/EMM and has adopted the structure of the content protecting of the right object as OMA DRM.
(execution mode 4)
Fig. 4 is the block diagram of the formation of the expression R-T unit that has the dispensing device 700 that relates to embodiments of the present invention 4 and receiving system 800.And, in Fig. 4, with above-mentioned each execution mode in R-T unit have on the position of identical function and formation in fact and give identical symbol, the explanation of this execution mode is quoted in its explanation, omits detailed explanation in execution mode 4.
In the dispensing device 700 of execution mode shown in Figure 44, add first as the digital video bit stream 1 of input digit information and to utilize first key 5 to encrypt in the compact part 2, generate the first encrypted digital video bit stream 3 as first enciphered message.The first encrypted digital video bit stream 3 that is generated sends multiplexed 30 to.
In the dispensing device 700 of execution mode 4, also be provided with: the 3rd ECM generating unit 506, it generates the 3rd ECM information 507 after first key 5 and the encryption; The second key generating unit 10, it generates second key 11; The second right object information generating unit 12, it generates the second right object information 13; Right object generating unit 14, it generates right object 15; The 4th EMM generating unit 718, it generates the 4th EMM information 719 after encrypting; Modulation portion 32, its modulation system by OFDM (OFDM) will be modulated from multiplexed 30 the 4th multiplexed information 731; First authentication department 736, it authenticates the target side that sends right object 15; With first Department of Communication Force 734, its authentication information to first authentication department 736 is received and dispatched, and sends right object 15.
On the other hand, in receiving system 800, the 4th modulation signal 733 that demodulation section 49 will receive carries out demodulation, and the 4th multiplexed information 850 is offered separated part 51.Separated part 51 is isolated the 4th EMM information 852 and the 3rd ECM information 655 and as the first encrypted digital video bit stream 62 of first enciphered message from the 4th multiplexed information 850.In addition, in receiving system 800, be provided with: the 4th EMM decryption part 853, it is transfused to the 4th EMM information 852; Right object separated part 72, it is transfused to from the right object 871 of second communication portion 870 and isolates second key 73 and the second right information data 76; The 4th ECM decryption part 857, it is supplied to second key 73 and extracts first key 58; The second right information deciphering portion 77, it extracts second right information 78 from the second right information data 76; The 3rd decryption part 663, the first encrypted digital video bit stream 62 after it will separate according to first key 58 and second right information 78 is decrypted, and exports first digital video bit stream 64; Second authentication 873, it receives right object 874 and target side is authenticated; With second communication portion 870, it receives and dispatches the authentication information of second authentication department 873, and receives right object 874.In addition, the communication information 735 is also by wired internet, wireless Internet or pass through electric wave as mobile phone.
In dispensing device shown in Figure 4 700, utilize first key 5 that is generated by the 3rd ECM generating unit 506 to add compact part 2 as the digital video bit stream 1 of input digit information and encrypt, export as the first encrypted digital video bit stream 3 through first.
Same by the 3rd ECM structure and above-mentioned table 1 that the 3rd ECM generating unit 506 is generated.
By second key 11 that is generated by the second key generating unit 10 the 3rd ECM is encrypted, thereby generate the 3rd ECM information 507, send multiplexed 30 to.
On the other hand, will send right object generating unit 14 to by second key 11 that the second key generating unit 10 is generated.The second right information generating unit 12 generates second right information 13 and sends right object generating unit 14 to.Second right information 13 is recorded and narrated with XML (eXtensible MarkupLanguage).Right object generating unit 14 generates the right object information 15 that comprises second key 11 and second right information 13, sends first Department of Communication Force 734 to.734 pairs of right objects of first Department of Communication Force 15 are implemented modulation, export as the communication information 735.
The 4th EMM generating unit 718 is encrypted the 4th EMM and is generated the 4th EMM information 719, sends multiplexed 30 to.
Expression the 4th EMM structure in table 6.As shown in table 6, the EMM structure shown in the 4th EMM and the above-mentioned table 5 compares, and the formation of variable portion is different, does not comprise descriptor " RO descriptor " and right object in variable.
CRC (Cyclic Redundancy Check) is a check code.
[table 6]
Table 6 the 4th EMM structure
Multiplexed 30 the first encrypted digital video bit stream 3, the 3rd ECM information 507, the 4th EMM information 719 are carried out multiplexedly, form the 4th multiplexed information 731, and this 4th multiplexed information 731 is offered modulation portion 32.Modulation portion 32 is modulated the 4th multiplexed information 731 by the modulation system of OFDM, and the 4th modulation signal 733 is exported to receiving system 800.
On the other hand, in receiving system 800, the 4th received modulation signal 733 is carried out demodulation, export the 4th multiplexed information 850 by demodulation section 49.Isolate the 4th EMM information 852, the 3rd ECM information 655 and the first encrypted digital video bit stream 62 the 4th multiplexed information 850 of separated part 51 after demodulation.
The 4th EMM information 852 is input to the 4th EMM decryption part 853.The card ID (receiving system identifying information) of the receiving system 800 shown in the 4th EMM decryption part 853 his-and-hers watches 6, the byte long of relevant information, protocol number, as to limit the cause body identifying information that receives the coding that the cause body in the broadcasting utilization discerns, increase when upgrading number update number and valid expiration date information extract.
Right object separated part 72 is extracted second key 73 and is offered the 4th ECM composite part 857, extracts the second right information data 76 and offers the second right information deciphering portion 77.The second right information deciphering portion 77 understands from the second right information data 76 and extracts second right information 78, and offers the 3rd decryption part 663.
The 3rd decryption part 663 utilizes first key 58 and second right information 78 that the first encrypted digital video bit stream 62 is decrypted, and exports as first digital video bit stream 64.
As mentioned above, in receiving system 800, can realize the deciphering of the first encrypted digital video bit stream 62 being carried out by the key that is comprised among right object 871 and the ECM/EMM.Therefore; in the R-T unit that relates to embodiments of the present invention 4; can realize as a kind of structure utilization of protection with the circuit different, the structure of the content protecting that will transmit as the right object ECM/EMM, the OMADRM with the 4th modulation signal 733.Therefore,, just can receive right object in use, will provide better convenience as the situation of 800 pairs of use mobile phones of receiving system from dispensing device 700 in case in receiving system 800, stored content.
(execution mode 5)
Fig. 5 is the block diagram of the formation of the expression R-T unit that has the dispensing device 500 that relates to embodiments of the present invention 5 and receiving system 900 and external device (ED) 674, and receiving system 900 constitutes home networks with external device (ED) 674.In Fig. 5, with above-mentioned each execution mode in R-T unit have on the position of substantive identical functions and formation and give identical symbol, the explanation of this execution mode is quoted in its explanation, omits detailed explanation in execution mode 5.
The dispensing device 500 of execution mode 5 shown in Figure 5 is same formations with the dispensing device 500 of embodiments of the present invention 3.
On the other hand, though receiving system 900 is identical with embodiments of the present invention 3 basically, what have first efferent 672 a bit is different.First efferent 672 sends the 3rd multiplexed information 650 to external device (ED) 674 as first output signal 673.External device (ED) 674 for example is image drift mobile phone, the such portable terminal of portable video player.In addition, first output signal 673 both can be the wire signal as Ethernet (Ethernet) (registered trade mark) physically, also can be the wireless signal as " 802.11b ".
As mentioned above, in receiving system 900, can realize the deciphering of the first encrypted digital video bit stream 62 being carried out by the right information that in the ECM/EMM that comprises the right object of discerning by the right object identifying information 671, comprised and key.On this, can also come output content by externally installing in 674 the structure that the right object that utilizes as ECM/EMM, OMA DRM carries out content protecting.
(execution mode 6)
Fig. 6 is the block diagram of the formation of the expression R-T unit that has the dispensing device 1000 that relates to embodiments of the present invention 6 and receiving system 1100 and external device (ED) 1200.In Fig. 6, with above-mentioned each execution mode in R-T unit have on the position of substantive identical functions and formation and give identical symbol, the explanation of this execution mode is quoted in its explanation, omits detailed explanation in execution mode 6.
In the dispensing device 1000 of execution mode shown in Figure 66, add first and to utilize first key 5 to encrypt in the compact part 2 as the digital video bit stream 1 of input digit information, generate the first encrypted digital video bit stream 3 as first enciphered message.Send the first encrypted digital video bit stream 3 that is generated to multiplexed 30.
In the dispensing device 1000 of execution mode 6, also be provided with: the 3rd ECM generating unit 506, it generates the 3rd ECM information 507 after first key 5 and the encryption; The second key generating unit 10, it generates second key 11; The second right object information generating unit 12, it generates the second right object information 13; Right object generating unit 14, it generates right object 15; The 5th EMM generating unit 1018, it generates the 5th EMM information 1019 after encrypting; The first right information generating unit 8, it generates first right information 9; With modulation portion 32, its modulation system by OFDM (OFDM) will be modulated from multiplexed 30 the 5th multiplexed information 1031, export the 5th modulation signal 1033.
On the other hand, in receiving system 1100, the 5th modulation signal 1033 that demodulation section 49 will receive carries out demodulation, and the 5th multiplexed information 1150 is offered separated part 51.Separated part 51 is isolated the 5th EMM information 1152, the 3rd ECM information 655, PMT (Program Map Table) information 59 respectively and as the first encrypted digital video bit stream 62 of first enciphered message from the 5th multiplexed information 1150.In addition, in receiving system 1100, be provided with: the 5th EMM decryption part 1153, it is transfused to the 5th EMM information 1152; The 3rd ECM decryption part 657, it is supplied to second key 73 and extracts first key 58; The first right information extraction unit 60, it extracts first right information 61 from PMT (Program Map Table) information 59; First decryption part 63, the first encrypted digital video bit stream 62 after it will separate according to first key 58 and first right information 61 is decrypted, and exports first digital video bit stream 64; With second efferent 1101, it is transfused to the 5th multiplexed information 1150.Second efferent, 1101 outputs, second output signal 1102, this signal transmits, physically, it both can be the wire signal transmission as Ethernet (Ethernet) (registered trade mark), also can be that wireless signal as " 802.11b " transmits, and constitute the part of home network with receiving system 1100.
External device (ED) 1200 for example is mobile phone, portable video player, car-mounted terminal, and its formation is shown in Fig. 7.Fig. 7 is the block diagram of the formation of external device (ED) 1200 in execution mode 6.External device (ED) 1200 receives the 5th multiplexed information 1150 from second efferent 1101 of receiving system 1100 as second output signal 1102, and from first Department of Communication Force 734 of dispensing device 1000 right object information 15 is received as the communication information 735.As shown in Figure 7, external device (ED) 1200 has: first input part 1249; Separated part 51; Second decryption part 80; The 3rd ECM decryption part 657; Third communication portion 1270; The 3rd authentication department 1273; Right object separated part 72; With the second right information deciphering portion 77.
In dispensing device shown in Figure 6 1000, utilize first key 5 that is generated by the 3rd ECM generating unit 506 to add compact part 2 and will encrypt as the digital video bit stream 1 of input information through first, export as the first encrypted digital video bit stream 3.
Same by the 3rd ECM structure and above-mentioned table 1 that the 3rd ECM generating unit 506 is generated.By second key 11 that is generated by the second key generating unit 10 the 3rd ECM is encrypted, thereby generate the 3rd ECM information 507, send multiplexed 30 to.
On the other hand, will send right object generating unit 14 to by second key 11 that the second key generating unit 10 is generated.The second right information generating unit 12 generates second right information 13 and sends right object generating unit 14 to.Second right information 13 is recorded and narrated with XML (eXtensible MarkupLanguage).Right object generating unit 14 generates the right object information 15 that comprises second key 11 and second right information 13, sends first Department of Communication Force 734 to.734 pairs of right objects of first Department of Communication Force 15 are implemented modulation, export as the communication information 735.
The 5th EMM generating unit 1018 is encrypted the 5th EMM and is generated the 5th EMM information 1019, sends multiplexed 30 to.
Expression the 5th EMM structure in table 7.As shown in table 7, the 5th EMM comprises the descriptor " EncKey descriptor " and second key in variable.CRC (Cyclic RedundancyCheck) is a check code.
[table 7]
Table 7 the 5th EMM structure
Multiplexed 30 the first encrypted digital video bit stream 3, the 3rd ECM information 507, the 5th EMM information 1019 are carried out multiplexedly, and the 5th multiplexed information 1031 offered modulation portion 32.Modulation portion 32 is modulated the 5th multiplexed information 1031 by the modulation system of OFDM (OFDM), and the 5th modulation signal 1033 is exported to receiving system 1100.
On the other hand, in receiving system 1100, the 5th received modulation signal 1033 is carried out demodulation, export the 5th multiplexed information 1150 by demodulation section 49.Isolate the 5th EMM information 1152, the 3rd ECM information 655, PMT (Program Map Table) information 59 and the first encrypted digital video bit stream 62 the 5th multiplexed information 1150 of separated part 51 after demodulation.
The 5th EMM information 1152 is input to the 5th EMM decryption part 1153.The card ID (receiving system identifying information) of the receiving system 1100 shown in the 5th EMM decryption part 1153 his-and-hers watches 7, the byte long of relevant information, protocol number, as to limit the cause body identifying information that receives the coding that the cause body in the broadcasting utilization discerns, increase when upgrading number update number and valid expiration date information extract.
The 5th EMM decryption part 1153 extracts second key 73, offers the 3rd ECM decryption part 657, the three ECM decryption parts 657 extractions first key 58 and offers first decryption part 63.
Externally install in 1200, first input part 1249 receives the 5th multiplexed information 1150 as second output signal 1102 from receiving system 1100, this signal is offered separated part 51 as the 6th multiplexed information 1250.Separated part 51 is separated into the 3rd ECM information 655 and the second encrypted digital video bit stream 79 with the 6th multiplexed information 1250, and the second encrypted digital video bit stream 79 is exported to second decryption part 80.
The 3rd authentication department 1273 of external device (ED) 1200 authenticates via first Department of Communication Force 734 of third communication portion 1270 and dispensing device 1000 and first authentication department 736 of dispensing device 1000, authentication receives right object 15 after setting up, and by the second right object separated part 72 second right object 76 is separated.Second right object 76 is understood by the second right information deciphering portion 77, and second right information 78 after understanding is exported to second decryption part 80.In addition, the 3rd ECM decryption part 657 is decrypted the 3rd ECM information 655 by second key 73, extracts first key 58.First key 58 that is extracted is offered second decryption part 80.
As mentioned above, in the R-T unit of execution mode 6, can realize the deciphering of the first encrypted digital video bit stream 3 being carried out by the key that is contained among the ECM/EMM.Owing in right object 15, comprise the right different with first right information, so in the external device (ED) as the portable terminal 1200, can carry out a kind ofly based on the deciphering of promising to undertake, this promise is different with deciphering in the receiving system 1100 of promising to undertake at first right information 9 that is stressed newly to obtain by operator one.Therefore, in case in receiving system 1100, for example set-top box, stored content, external device (ED) 1200, for example in portable terminal and car-mounted terminal, transmit via WLAN, external device (ED) 1200 just can be in the moment of using content, from dispensing device 1000, for example by electric wave right object is received.So the R-T unit of execution mode 6 constitutes the device that better convenience can be provided.
The present invention in the digital broadcasting that utilizes the structure protect by ECM/EMM, utilizes under the situation of the copyright administration that adopts the structure of protecting by the right object as OMA DRM to be particularly useful at the same time.
Claims (14)
1. dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The one EMM generating unit, it generates the 3rd key, and generates an EMM, and a described EMM is encrypted, generate an EMM information, a wherein said EMM comprises described the 3rd key of generation, described right object, described right object identifying information and receiving system identifying information;
The one ECM generating unit, its generation comprise an ECM of described first key, and a described ECM who utilizes described the 3rd key to generate encrypts, and generate an ECM information; With
Multiplexed portion, it carries out a described ECM information, a described EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information.
2. dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The 2nd EMM generating unit, it generates the 3rd key, and generates the 2nd EMM according to described the 3rd key and the receiving system identifying information that generate, and described the 2nd EMM is encrypted, and generates the 2nd EMM information;
The 2nd ECM generating unit, its generation comprise the 2nd ECM of described first key, described right object and described right object identifying information, and described the 2nd ECM that utilizes described the 3rd key to generate encrypts, and generate the 2nd ECM information; With
Multiplexed portion, it carries out described the 2nd ECM information, described the 2nd EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information.
3. receiving system has:
Separated part, it will be imported multiplexed information and separate the ECM information after output is encrypted, an EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The one EMM decryption part, it is from a described EMM information extraction receiving system identifying information, right object and the 3rd key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The one ECM decryption part, it utilizes described the 3rd key from a described ECM information the one ECM to be decrypted, and exports first key;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
4. receiving system has:
Separated part, it will be imported multiplexed information and separate the 2nd ECM information after output is encrypted, the 2nd EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The 2nd EMM decryption part, it is from described the 2nd EMM information extraction receiving system identifying information and the 3rd key;
The 2nd ECM decryption part, it utilizes described the 3rd key from described the 2nd ECM information the 2nd ECM to be decrypted, and extracts the right object and first key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
5. R-T unit that has dispensing device and receiving system,
Described dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The one EMM generating unit, it generates the 3rd key, and generates an EMM, and a described EMM is encrypted, generate an EMM information, a wherein said EMM comprises described the 3rd key of generation, described right object, described right object identifying information and receiving system identifying information;
The one ECM generating unit, its generation comprise an ECM of described first key, and a described ECM who utilizes described the 3rd key to generate encrypts, and generate an ECM information; With
Multiplexed portion, it carries out a described ECM information, a described EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information,
Described receiving system has:
Separated part, it will be imported multiplexed information and separate the ECM information after output is encrypted, an EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The one EMM decryption part, it is from a described EMM information extraction receiving system identifying information, right object and the 3rd key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The one ECM decryption part, it utilizes described the 3rd key from a described ECM information the one ECM to be decrypted, and exports first key;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
6. R-T unit that has dispensing device and receiving system,
Described dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
Second adds compact part, and it utilizes described second key that described input digit information is encrypted, and generates second enciphered message;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The 2nd EMM generating unit, it generates the 3rd key, and generates the 2nd EMM according to described the 3rd key and the receiving system identifying information that generate, and described the 2nd EMM is encrypted, and generates the 2nd EMM information;
The 2nd ECM generating unit, its generation comprise the 2nd ECM of described first key, described right object and described right object identifying information, and described the 2nd ECM that utilizes described the 3rd key to generate encrypts, and generate the 2nd ECM information; With
Multiplexed portion, it carries out described the 2nd ECM information, described the 2nd EMM information, described first enciphered message, described second enciphered message and described first right information multiplexed, the output multiplexed information,
Described receiving system has:
Separated part, it will be imported multiplexed information and separate the 2nd ECM information after output is encrypted, the 2nd EMM information, first enciphered message, second enciphered message and the PMT information after the encryption;
The 2nd EMM decryption part, it is from described the 2nd EMM information extraction receiving system identifying information and the 3rd key;
The 2nd ECM decryption part, it utilizes described the 3rd key from described the 2nd ECM information the 2nd ECM to be decrypted, and extracts the right object and first key;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The first right information extraction unit, it is from described PMT information extraction first right information;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second decryption part, it utilizes described second key that described second enciphered message is decrypted according to described second right information.
7. dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
Right object identifying information generating unit, whether it generates being the right object identifying information that described right object is discerned;
The 3rd EMM generating unit, it generates the 3rd EMM and it is encrypted, and generates the 3rd EMM information, and wherein said the 3rd EMM comprises described right object, described right object identifying information and receiving system identifying information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM of described first key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information; With
Multiplexed portion, it carries out described the 3rd ECM information, described the 3rd EMM information and described first enciphered message multiplexed, the output multiplexed information.
8. dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
The 4th EMM generating unit, its generation comprise the 4th EMM of receiving system identifying information, and described the 4th EMM is encrypted, and generate the 4th EMM information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM of described first key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information;
Multiplexed portion, it carries out described the 3rd ECM information, described the 4th EMM information and described first enciphered message multiplexed, the output multiplexed information;
First authentication department, it authenticates the target side that sends described right object; With
First Department of Communication Force, its authentication information to described first authentication department is received and dispatched, and sends described right object.
9. dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
The 5th EMM generating unit, its generation comprise the 5th EMM of the receiving system identifying information and second key, and described the 5th EMM is encrypted, and generate the 5th EMM information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM of described second key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information;
Multiplexed portion, it carries out described the 3rd ECM information, described the 5th EMM information, described first enciphered message and described first right information multiplexed, the output multiplexed information;
First authentication department, it authenticates the target side that sends described right object; With
First Department of Communication Force, its authentication information to described first authentication department is received and dispatched, and sends described right object.
10. receiving system has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 3rd EMM information and first enciphered message after the encryption;
The 3rd EMM decryption part, it is from described the 3rd EMM information extraction receiving system identifying information and right object;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key; With
The 3rd decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information.
11. a receiving system has:
Separated part, it will be imported multiplexed information and separate the 4th ECM information after output is encrypted, the 4th EMM information and first enciphered message after the encryption;
The 4th EMM decryption part, it is from described the 4th EMM information extraction receiving system identifying information;
Second authentication department, its butt joint is retaken the power the target side of sharp object and is authenticated;
Second communication portion, its authentication information to described second authentication department is received and dispatched, and receives described right object.
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 4th ECM decryption part, it utilizes described second key from described the 4th ECM information the 4th ECM to be decrypted, and exports first key; With
The 3rd decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information.
12. a receiving system has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 3rd EMM information and first enciphered message after the encryption;
The 3rd EMM decryption part, it is from described the 3rd EMM information extraction receiving system identifying information and right object;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key;
The 3rd decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information; With
First efferent, it exports described input multiplexed information and described right object.
13. a receiving system has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 5th EMM information, first enciphered message and the PMT information after the encryption;
The 5th EMM decryption part, it is from described the 5th EMM information extraction receiving system identifying information and second key;
The first right information extraction unit, it is from described PMT information extraction first right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second efferent, it exports described input multiplexed information.
14. a R-T unit that has dispensing device, receiving system and external device (ED),
Described dispensing device has:
First adds compact part, and it utilizes first key that input digit information is encrypted, and generates first enciphered message;
The second key generating unit, it generates second key;
The first right information generating unit, it generates first right information;
The second right information generating unit, it generates second right information;
Right object generating unit, its generation comprise the right object of described second right information and described second key;
The 5th EMM generating unit, its generation comprise the 5th EMM of the receiving system identifying information and second key, and described the 5th EMM is encrypted, and generate the 5th EMM information;
The 3rd ECM generating unit, its generation comprise the 3rd ECM of described second key, and described the 3rd ECM that utilizes described second key to generate encrypts, and generate the 3rd ECM information;
Multiplexed portion, it carries out described the 3rd ECM information, described the 5th EMM information, described first enciphered message and described first right information multiplexed, the output multiplexed information;
First authentication department, it authenticates the target side that sends described right object; With
First Department of Communication Force, its authentication information to described first authentication department is received and dispatched, and sends described right object,
Described receiving system has:
Separated part, it will be imported multiplexed information and separate the 3rd ECM information after output is encrypted, the 5th EMM information, first enciphered message and the PMT information after the encryption;
The 5th EMM decryption part, it is from described the 5th EMM information extraction receiving system identifying information and second key;
The first right information extraction unit, it is from described PMT information extraction first right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key;
First decryption part, it utilizes described first key that described first enciphered message is decrypted according to described first right information; With
Second efferent, it exports described input multiplexed information,
Described external device (ED) has:
The 3rd authentication department, its butt joint is retaken the power the target side of sharp object and is authenticated;
Third communication portion, its authentication information to described the 3rd authentication department is received and dispatched, and receives described right object;
The right object separated part, it extracts second key and the second right information data from described right object;
The second right information deciphering portion, it is from the described second right information data extract, second right information;
The 3rd ECM decryption part, it utilizes described second key from described the 3rd ECM information the 3rd ECM to be decrypted, and exports first key; With
Second decryption part, it utilizes described first key that described first enciphered message is decrypted according to described second right information.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007163611 | 2007-06-21 | ||
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| CNA2008101253755A Pending CN101330337A (en) | 2007-06-21 | 2008-06-20 | Transmitting apparatus, receiving apparatus and transceiving apparatus |
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| JP (1) | JP2009027681A (en) |
| CN (1) | CN101330337A (en) |
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