Digital content distribution system

FIELD: cryptographic protocols, in particular, efficient encoding at content level.

SUBSTANCE: method is provided for generation of digital data with cryptographic protection, encoding content and composed into messages. Encoding of at least a part of the message is performed and encoded messages are provided in form of output signal in format, allowing the interface of server service to compose a message in form of at least one packet, including at least one header and useful load, where at least one header includes information, which allows the service interface in the client to assemble each message for decoding application using useful load of packets. Each message is divided onto the first and at least one additional section of the message. At least one of the message sections is encoded in such a way that it may be decoded independently from other message sections. Assembly of encrypted message is performed by addition of resynchronization marker, separating the message section from adjacent message section and including precise information about synchronization, at least for additional sections of the message.

EFFECT: synchronized decoding process in case of data loss.

14 cl, 8 dwg

 

Description text presents faxing

1. The method of generating digital data encrypted encoding content and arranged into messages, each message is decoded by a decoding application in the client terminal with the interface to assemble each message for the decoder application, namely, that provide sample messages with machine-readable media that implement the encryption of at least part of the message and provide the encrypted message in the form of the output signal in a format that allows the interface services server to compose a message in at least one package comprising at least one header and a payload, each payload includes at least part of the message, at least one header includes information to enable the interface on the client to assemble each message diadectidae application from the payload of the packets, this divide each message at the first and at least one additional section of the message, at least one of the partitions to encrypt messages so that it could be decoded independently from other sections of the message, and assemble the encrypted message by adding a resynchronization marker separating section message section from the adjacent section of the message and includes accurate information about synchronization, at least to additional sections of the message.

2. The method according to claim 1, characterized in that the partition encrypt messages using at least one key having a cyclic value.

3. The method according to claim 1, characterized in that each token resynchronization additionally includes unambiguous serial number.

4. The method according to claim 1, characterized in that it further added that encapsulates each encrypted message and includes unambiguous serial number.

5. The method according to claim 3 or 4, characterized in that each unambiguous serial number provided in the following format self-describing.

6. The method according to claim 3, characterized in that the partition encrypt messages using at least one key having a circular value, and additionally generate at least one key message is, each key message is the data that associates at least one unambiguous sequential number added to the message, with the value of the key to decrypt at least part of this message.

7. The method according to claim 3, characterized in that it further encrypt sections of a message through the use of cipher cryptographic mode using feedback, and code re-initialize at the beginning of each section of the message.

8. The method according to claim 7, characterized in that unique serial number in the token resynchronization separating the additional section of the message from the other sections of the message are used as the initialization vector for encrypting the additional section of the message.

9. The method according to claim 1, characterized in that the encryption section of the message using a block cipher, the cipher uses the size of the encryption block is equal to the divisor of the section size of the message.

10. The method according to claim 1, characterized in that it further using the cipher in counter mode, the counter is re-set before encrypting section of the message.

11. The method according to claim 10, characterized in that each token resynchronization additionally includes unambiguous serial number, and unambiguous serial number in the token resin is anizatio, separating the additional section of the message from the other sections of the message are used to form the counter to encrypt the additional section of the message.

12. The method according to claim 10 or 11, characterized in that encrypt messages belonging to a separate elementary streams, and each stream is designed for decoding the application in the client, provide the encrypted message in the form of the output signal in a format that allows the interface on the client to assemble the message in separate elementary streams, and the counter form of "podsalvage" key, while the other "podsalvage" the key used for messages of each elementary stream.

13. The server is configured to decrypt data encrypted encoding content and arranged into messages, generated by the method according to any of PP-5, and sections of a message encrypted using at least one key having a circular value, and the server is designed to transmit at least one key message, with each key message is the data that associates at least one unambiguous sequential number added to the message, with the value of the key to decrypt at least part of this message is in response to a request from the client terminal, connected to the server over the network.

14. System for generating digital data encrypted encoding content and arranged into messages, each message is decoded by a decoding application in the client terminal with the interface to assemble each message for the decoder application, the system is configured to

fetch messages from machine-readable media,

encrypting at least part of the message and

providing the encrypted message in the form of the output signal in a format that allows the interface services server to compose a message in at least one package comprising at least one header and a payload, each payload includes at least part of the message, at least one header includes information to enable the interface on the client to assemble each message for the decoder application from the payload of the packets, in addition, the system configured to split each message at the first and at least one additional section of the message, encrypt the at least one of the sections of the message so that it could be decoded independently of the others behold the Nations of the message, and build an encrypted message by adding a resynchronization marker separating section message section from the adjacent section of the message and includes the exact sequence synchronization, at least to additional sections of the message.

15. System 14, characterized in that it is configured to encrypt sections of the message using at least one key having a cyclic value.

16. System 14, characterized in that each token resynchronization additionally includes unambiguous serial number.

17. System 14, characterized in that it further configured to add a shell that encapsulates each encrypted message and includes unambiguous serial number.

18. The system according to item 16 or 17, characterized in that it is configured to provide each unambiguous sequence number in the format self-describing.

19. The system of clause 16, characterized in that it is configured to encrypt sections of the message using at least one key having a circular value, it is additionally configured to generate at least one key message, each to ucioa message has data connecting at least one unambiguous sequential number added to the message, with the value of the key to decrypt at least part of this message.

20. The system of clause 16, characterized in that it further configured to encrypt sections of a message through the use of cipher cryptographic mode using feedback, in addition, the system configured to re-initialize the cipher at the beginning of each section of the message.

21. The system according to claim 20, characterized in that it further configured to use an unambiguous sequence number in the token resynchronization separating the additional section of the message from another section of the message, as the initialization vector for encrypting the additional section of the message.

22. System 14, characterized in that it is configured to use a block cipher to encrypt sections of the message and the cipher uses a block size equal to the divisor of the section size of the message.

23. System 14, characterized in that it further configured to use the cipher in counter mode and re-installation of the meter before encrypting section of the message.

24. The system according to item 23, characterized t is m, each token resynchronization additionally includes unambiguous serial number, the system configured to use an unambiguous sequence number in the token resynchronization separating the additional section of the message from other messages section, for forming a counter to encrypt the additional section of the message.

25. The system according to item 23 or 24, characterized in that it is designed to encrypt messages that belong to a separate elementary streams, and each stream is designed for decoding the application client, the system is configured to provide the encrypted message in the form of the output signal in a format that allows the interface on the client to assemble the message in separate elementary streams, in addition, the system is configured with the possibility of forming a counter from "podsalvage" key and use the various "podsalvage" keys for messages of each elementary stream.

26. A method for distributing digital data encoding content and arranged into messages, from the server to one or more client terminals through the network, and each message is decoded by a decoding application in the client terminal, sanlucas is the action scene is that

transmit multiple data packets from the server over the network through a network interface of the server, and each package includes at least one header and a payload, each payload includes at least part of the message,

provide each message from the first group of the at least one interface between the two levels in the Protocol stack installed on the server, and each interface is configured with the possibility of adding at least one packet header to the coding information of the package, allowing the client to handle the rest of the package, additionally transmit packets that includes at least one header including information allowing the interface on the client to assemble each message for the decoder application from the payload of the packets while forwarding packets having a payload package that includes the first section and at least one further section, each further section includes a resynchronization marker separating section message section from the adjacent section of the message and includes the exact sequence synchronization, and at least one of the partitions to encrypt messages so that it is able is to be decoded independently of other sections of the message.

27. The method according to p, characterized in that the partition encrypt messages so that they can be decoded using at least one key having a circular key value.

28. The method according to p, wherein forwarding packets, with each token resynchronization includes unambiguous serial number.

29. The method according to p, wherein forwarding packets, with each message encapsulate by shell, including unambiguous serial number.

30. The method according to p or 29, characterized in that each unambiguous serial number provided in the following format self-describing.

31. The method according to p, characterized in that the partition encrypt messages so that they can be decoded using at least one key having a circular key, and additionally transmit at least one key message, each key message is the data that associates at least one unambiguous sequence number included in the message, with the value of the key to decrypt at least part of this message.

32. Server for distributing digital data encoding content and arranged into messages, to one or more client terminals through the network, and each is e message is decoded by a decoding application in the client terminal, contains the network interface for transmission of multiple data packets from the server over the network, and each packet includes at least one header and a payload, each payload includes at least part of the message, the server additionally includes at least one interface between the two levels in the Protocol stack, where each interface is configured with the possibility of adding at least one packet header to the coding information of the package, allowing the client to handle the rest of the package, the server is configured to transmit packets including at least one header including information allowing the interface on the client to assemble each message for the decoder application from the payload of the packets, in addition, the server configured to distribute packets having a payload package that includes a first section and at least one further section, each further section includes a resynchronization marker separating section message section from the adjacent section of the message and includes the exact sequence synchronization, at least one of the sections of the message cipher the van so so it can be decoded independently from other sections of the message.

33. The server p, characterized in that section of the message is encrypted so that they can be decrypted using at least one key having a circular key value.

34. The server p, characterized in that it is configured to transmit packets, and each token resynchronization includes unambiguous serial number.

35. The server p, characterized in that it is configured to transmit packets, and each message is encapsulated by a shell that includes an unambiguous serial number.

36. The server 34 or 35, characterized in that it is configured to provide each unambiguous sequence number in the format self-describing.

37. The server 34, characterized in that section of the message is encrypted so that they can be decrypted using at least one key having a circular key, the server is additionally configured to transmit at least one key message, each key message is the data that associates at least one unambiguous sequence number included in the message, with the value of the key enabling decryption of at least part of this message.

38. The client terminal for receiving and processing digital data encoding content and arranged into messages, each message is decoded by a decoding application that contains the interface for receiving multiple data packets, and each packet includes at least one header and payload, the terminal additionally includes at least one interface between the two levels in the Protocol stack, where each interface configured to remove at least one packet header from the packet and process the rest of the package using the information encoded in the remote packet header including the interface, configured to build a message for the decoder application from the payload of at least one packet, using information included in at least one packet header, and a terminal configured to receive payloads of the packets comprising the first section and at least one further section, each further section includes a resynchronization marker separating section message section from the adjacent section of the message and includes the exact sequence is the synchronization, extract each section by localizing markers Retiming, decrypt each encrypted section of the message independently of other sections of the message and paste each decoded messages section in place of the partition from which it was derived.

39. The client terminal according to 38, characterized in that it is configured to decrypt sections of the message using at least one key having a circular key value.

40. The client terminal according to 38, characterized in that it is configured to sample an unambiguous sequence number of each token resynchronization.

41. The client terminal according to 38, wherein each encrypted message is encapsulated by a shell, and the client terminal is configured with a choice of unambiguous sequence number of each shell.

42. Client terminal p or 41, characterized in that it is configured to derive the length of the field containing unambiguous serial number by parsing unambiguous sequence number in the format self-describing.

43. Client terminal p or 41, characterized in that it is configured to decrypt sections of the message using the about at least one key, having a circular key value, and it is additionally configured to receive at least one key message, and each message has a data linking at least one unambiguous sequential number added to the message, with the value of the key to decrypt at least part of this message, and selection of key values using these data.

44. Client terminal p, characterized in that it further configured to decrypt sections of the message through the use of cipher cryptographic mode using feedback, and re-initialize the cipher at the beginning of each section of the message.

45. The client terminal according to item 44, wherein it is configured to use an unambiguous sequence number in the token resynchronization separating the additional section of the message from another section of the message, as the initialization vector to decrypt the additional section of the message.

46. The client terminal according to any one of p-41, characterized in that it further configured to use a block cipher to decrypt the messages section and use the size of the ciphertext block is equal to a divisor of the size of the section of the message.

47. The client terminal according to 38, characterized in that it further configured to use the cipher in counter mode and re-installation of the meter before decrypting section of the message.

48. Client terminal p, characterized in that it is configured to sample an unambiguous sequence number of each token resynchronization, and it is additionally configured to use an unambiguous sequence number in the token resynchronization separating the additional section of the message from another section of the message, as a counter to decrypt the additional section of the message.

49. Client terminal p or 48, characterized in that it further configured to receive and process messages that belong to a separate elementary streams, and each stream is designed for decoding application installed in the client terminal, and the interface in the client terminal configured to build messages in separate elementary streams, the client terminal is additionally configured with the possibility of forming a counter from "podsalvage" key using another key messages of each elementary stream.

50. Customers who ski a terminal according to any one of p-41, wherein the terminal is configured to rebuild at least part of each incoming packet after decryption by adding at least one header of each packet to the payload is inserted decrypted sections of the message before sending it to the interface.

51. The client terminal according to item 50, wherein the device further comprises a network interface for receiving data packets from the server over the network, and add the header includes a header that includes the network address identifying the client terminal as the intended recipient of the packet.

52. The method of receiving and processing in the client terminal digital data encoding content and arranged into messages, each message is decoded by a decoding application, namely, that

take plenty of data packets through an interface of the client terminal, and each package includes at least one header and payload,

provide each packet from the first group of the at least one interface between the two levels in the Protocol stack, where each interface configured to remove at m is d one packet header from the packet and process the rest of the pack by using the information, encoded in the remote packet header, including the interface, configured to build a message for the decoder application from the payload of at least one packet using the information included in at least one packet header, accept payload of the packets containing the first section and at least one further section, each further section includes a resynchronization marker separating section message section from the adjacent section of the message and includes the exact sequence synchronization, with each section extracted by localizing markers Retiming, and each encrypted section decrypt messages independently of the other sections messages, and each decrypted section of the message is inserted in place of the partition from which it was derived.

53. The method according to paragraph 52, characterized in that section decrypt messages using at least one key having a circular key value.

54. The method of paragraph 52, wherein the exercise selection is unambiguous sequence number of each token resynchronization.

55. The method of paragraph 52, wherein each encrypted message encapsulate through the shell and carry out sample unambiguously what about the serial numbers from each shell.

56. The method according to item 54 or 55, characterized in that the output length of the field containing unambiguous serial number by parsing unambiguous sequence number in the format self-describing.

57. The method according to item 54 or 55, characterized in that section decrypt messages using at least one key having a circular key value, while additionally taking at least one key message, and each message has a data linking at least one unambiguous sequential number added to the message, with the value of the key to decrypt at least part of this message, and choose key values, using these data.

58. The method according to item 54, wherein the additional decode section of the message through the use of cipher cryptographic mode using feedback, and re-initialize the cipher at the beginning of each section of the message.

59. The method according to 58, characterized in that use is unambiguous serial number in the token resynchronization separating the additional section of the message from another section of the message, as the initialization vector to decrypt the additional section of the message.

60. The method according to any of p-55, characterized in that the more the positive use a block cipher to decrypt the messages section and use the block size of the cipher text, equal to the divisor of the section size of the message.

61. The method of paragraph 52, wherein optionally use the cipher in counter mode and re-set the counter before decrypting section of the message.

62. The method according to p, characterized in that are unambiguous sample sequence number of each token resynchronization and optionally use the unambiguous sequence number in the token resynchronization separating the additional section of the message from another section of the message, as a counter to decrypt the additional section of the message.

63. The method according to p or 62, characterized in that it further receive and process messages belonging to a separate elementary streams, and each stream is designed for decoding application installed in the client terminal, the interface in the client terminal configured to build messages in separate elementary streams, in addition, form count of "podsalvage" key using another key message of each elementary stream.

64. The method according to any of p-55, characterized in that the re-collect at least a portion of each incoming packet after decryption by adding at least one of the headers of each of the th packet to the payload decrypted with the inserted sections of the message before passing it to the interface.

65. The method according to p, characterized in that the data packets take through the network interface device of the client terminal, while adding a header that includes an address identifying the client terminal as the intended recipient of the packet.

66. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, giving the computer the functionality of a system according to any one of p-25.

67. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, giving the computer server functionality according to item 13.

68. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, giving the computer server functionality on any of PP-37.

69. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, giving the computer the functionality of the client is of erminal on any of p-51.

70. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, enables the computer to perform the method according to any claims 1 to 12.

71. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, enables the computer to perform the method according to any of PP-31.

72. Machine-readable storage medium containing a computer program, loadable into a computer and have the potential when it is executed on a computer, enables the computer to perform the method according to any of PP-65.



 

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