METHOD FOR TRANSMITTING AND RECEIVING DATA, IN PARTICULAR FOR SECURE EXCHANGES BETWEEN AN AIRCRAFT AND A GROUND BASE, RELATED DEVICES AND AIRCRAFT EQUIPPED WITH SUCH DEVICES

• US 20090138716A1
• Filed: 03/27/2007
• Published: 05/28/2009
• Est. Priority Date: 03/29/2006
• Status: Active Grant

• Current Assignee: Airbus Operations SAS (Airbus SE)
• Original Assignee: Airbus Operations SAS (Airbus SE)
• Inventors: Leclercq, Agnes, Colle-Morlec, Cecile
• Granted Patent: US 8,572,390 B2
• Time in Patent Office: Days
• US Class Current: 713/171
• CPC Class Codes: H04B 7/18508 with satellite system used as relay, i.e. aeronautical mobile satellite service
• CPC Class Codes: H04L 2209/30 Compression, e.g. Merkle-Damgard construction
• CPC Class Codes: H04L 2209/80 Wireless network architectures or network communication protocols for wireless network security H04W12/00
• CPC Class Codes: H04L 9/3236 using cryptographic hash functions

Abstract

A method for transmitting data, a receiving method, related devices, and an aircraft equipped with the devices. The method includes determining an authentication word of the data; processing the data to obtain processed data; and transmitting the processed data on a transmission channel.

Claims

1-22. -22. (canceled)

23. A method for emission of data, comprising:

determining an authentication word for the data;

data processing to obtain processed data, the data processing comprising a compression; and

emission of the processed data on a transmission channel.

24. An emission method according to claim 23, wherein the determining comprises application of a hash function to the data.

25. An emission method according to claim 24, wherein the application of the hash function uses a cryptographic key.

26. An emission method according to claim 23, wherein the data processing comprises an encryption.

27. An emission method according to claim 26, wherein the encryption is applied to the data and to the authentication word.

28. An emission method according to claim 23, wherein the data processing comprises conversion of 8-bit words to 6-bit words.

29. An emission method according to claim 23, wherein the transmission channel is a channel for exchange of data between an aircraft and a ground base.

30. A method for reception of data, comprising:

reception of the data on a transmission channel;

processing of the received data, the processing comprising a decompression; and

verification of authentication of the processed data.

31. A reception method according to claim 30, wherein the verification comprises:

calculation of an imprint of at least part of the processed data; and

comparison of the calculated imprint with a received imprint.

32. A reception method according to claim 31, wherein the calculation of the imprint comprises application of a hash function to the part of the data.

33. A reception method according to claim 32, wherein the application of the hash function uses a cryptographic key.

34. A reception method according to claim 32, wherein the received imprint is a result of application, during emission, of the hash function to the data to be emitted.

35. A reception method according to claim 30, wherein the processing comprises a decryption.

36. A reception method according to claim 30, wherein the processing comprises deconversion of 6-bit words to 8-bit words.

37. A reception method according to claim 30, wherein the transmission channel is a channel for exchange of data between an aircraft and a ground base.

38. A data emission device, comprising:

means for determining an authentication word for the data;

means for processing the data to obtain processed data, the means for processing comprising compression means; and

means for emitting the processed data on a transmission channel.

39. An emission device according to claim 38, wherein the means for determining comprises means for applying a hash function to the data.

40. An emission device according to claim 38, wherein the means for processing comprises encryption means.

44. An aircraft comprising a device according to claim 38.

41. A data reception device, comprising:

means for receiving data on a transmission channel;

means for processing the received data, the means for processing comprising decompression means; and

means for verifying authentication of the processed data.

42. A reception device according to claim 41, wherein the means for verifying comprises means for applying a hash function to at least part of the processed data to obtain a calculated imprint, and means for comparing the calculated imprint with a received imprint.

43. A reception device according to claim 41, wherein the means for processing comprises decryption means.