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Method and device for protecting the integrity of data transmitted over a network

Abstract : 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.
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https://hal.archives-ouvertes.fr/hal-01213785
Contributor : Jean-Marc Couveignes Connect in order to contact the contributor
Submitted on : Friday, October 9, 2015 - 8:05:22 AM
Last modification on : Friday, January 21, 2022 - 3:08:41 AM

Identifiers

  • HAL Id : hal-01213785, version 1

Citation

Gilles Zemor, Lopez Juan, Jean-Michel Camus, Marc Perret, Jean-Marc Couveignes. Method and device for protecting the integrity of data transmitted over a network. United States, Patent n° : US 9,009,839 B2. 2015. ⟨hal-01213785⟩

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