Avionic Equipment With Single Use Signing Of Message And System, Method And Program

The invention provides a piece of avionic equipment with single use signing of message and a system, a method and a program. An avionic equipment unit, intended to be on board an aircraft, including acalculating module configured to calculate a signature associated with a data field, the calculated signature depending on the data field, and a transmission module configured to transmit a message to another avionic equipment unit on board the aircraft, the message including the data field and the associated calculated signature, the calculated signature being unique for each data field and foreach respective message transmission. 本发明涉及种对消息次性签名的航空电子设备、系统、方法和程序。该航空电子设备单元(14)，其用于装载在飞行器(10)上，包括计算模块(30)，其被用来计算与数据字段相关联的签名，所计算出的该签名取决于该数据字段；以及传送模块(32)，其被用于向装载在飞行器(10)上的另个航空电子设备单元(14)传送消息，该消息包括数据字段和相关联的所计算出的该签名。所计算出的该签名对于每个数据字段和每次相应的消息传送是唯的。