发明名称 |
Method and device for protecting the integrity of data transmitted over a network |
摘要 |
A method of transmitting data over a network, from a sending application to a receiving application, including: coding the data, by the sending application, by implementing a predefined rule; detecting alteration of at least one item of data transmitted, by the receiving application, by implementing the predefined rule; and in case an alteration of a data item is detected, restoring the altered data item. In the course of the coding, in the course of the alteration detection, and in the course of the restoration, a cyclic redundancy check or an encryption can be implemented. |
申请公布号 |
US9009839(B2) |
申请公布日期 |
2015.04.14 |
申请号 |
US200913001789 |
申请日期 |
2009.06.05 |
申请人 |
Airbus Operations S.A.S. |
发明人 |
Lopez Juan;Camus Jean-Michel;Couveignes Jean-Marc;Zemor Gilles;Perret Marc |
分类号 |
H04L9/32;G06F21/31;H04L12/24;H04L29/06 |
主分类号 |
H04L9/32 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A method for transmitting data over an AFDX network, from a sender to a receiver, the sender includes a sending application and a sending network interface, the receiver includes a receiving application and a receiving network interface, the method comprising:
coding the data, by the sending application, by implementing a first predefined CRC rule, to produce a coded application data, the first predefined CRC rule includes performing a K-linear transforming function, splitting the result of the K-linear transforming function into a plurality of blocks, individually inverting the plurality of blocks using S-boxes, and performing an expansion by a CRC of maximal non-linearities in the encoded data; further coding the coded application data, by the sending network interface, by implementing a second predefined CRC rule different than the first predefined CRC rule, to produce a coded network frame, a process to code data by the first predefined CRC rule being different than a process to code data by the second predefined CRC rule; sending the coded network frame over the AFDX network from the sender to the receiver; decoding the coded network frame, by the receiving network interface, by implementing the second predefined CRC rule; detecting alteration of at least a portion of the data, by the receiving application, by implementing the first predefined CRC rule; and in event of detection of alteration of at least the portion of the data, restoring the altered data item by sending a request, from the receiving application to the sending application over the AFDX network, to retransmit the data. |
地址 |
Toulouse FR |