France Telecom

Sylvain Gombault

Christian Duret

Joël Lattmann

Pierre Rolin

Maryline Laurent Maknavicius

Hervé Guesdon

Olivier Paul

Laurent Toutain

A Trie-type associative memory is used for an analysis of binary strings situated at defined locations of data packets. An analysis tree is established, which comprises stages associated with the locations, and paths each arriving at an action attributed on the basis of the values of the binary strings read from a data packet. The tree is then transcribed into the Trie memory.

Method for configuring a trie memory for the processing of data packets, and packet-processing device implementing such a method

The invention provides a method of verifying the integrity of sequences of data transmitted from a first station to a second station in a broadcast network during a call set up between the first and second stations. First and second encipherment seals are calculated in a control station separate from and independent of the first and second stations, respectively in response to reception of a sequence corresponding to the transmitted data sequence and in response to reception of the sequence which is received in and retransmitted by the second station. A comparison of the calculated seals for integrity verification is preceded in the control station by searching for the first seal calculated according to an identification word of the sequence which is retransmitted by the second station. The invention relates to a method of verifying the integrity of data sequences exchanged between stations respectively belonging to different broadcast networks.

Verification of integrity of data exchanged between two

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Rennes, France

Sylvain Gombault