Method and device for transmitting information with...

Details Method and device for transmitting information with... Method and device for transmitting information with...

H - Electricity

04

L

H04L 9/32 (2006.01)

Patent

CA 2550572

For the transmission of information with verification of transmission errors, a useful information message (M) is transmitted in a determined frame while being associated with a determined number p of transmission error verification bits (CRC,S) also transmitted in the frame. In order to have an element allowing the verification of intentional errors, determined number p1 of the transmission error verification bits form a seal (S) obtained from a determined sealing function, where p1 is a number less than p. Application to radiocommunications equipment requiring the verification of the integrity and the authentication of the messages transmitted.

Selon l'invention, pour la transmission d'informations avec vérification d'erreurs de transmission, un message d'information utile (M) est transmis dans une trame déterminée tout en étant associé à un nombre déterminé p de bits de vérification d'erreurs de transmission (CRC,S) également transmis dans la trame. Pour disposer d'un élément permettant la vérification d'erreurs intentionnelles, un nombre déterminé p1 de bits de vérification d'erreurs de transmission forment un sceau (S) obtenu à partir d'une fonction de scellement déterminée, p1 étant un nombre inférieur à p. Cette invention peut être appliquée à un équipement de radiocommunication requérant la vérification de l'intégrité et l'authentification des messages transmis.

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