Method for automatic recognition between a mobile device and a motor vehicle, capable of functioning according to the ble protocol
An automatic identification, motor vehicle technology, applied in the field of automatic identification
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[0059] - The fourth exemplary embodiment corresponds to the case where n≠0 and m≠0
[0060] - In a second step, when the smartphone SP in scan mode receives the data frame Td and therefore the identification data element RPAi, it calculates the encrypted check code R'i on the one hand. This check operation takes place in the secure area 107 by means of the same encryption function Fc as present in the vehicle Vi; the latter has been stored in the secure area 107 by means of the cardlet software element containing this encryption function Fc. The formula for R'i is as follows:
[0061] R'i=Fc(Vidi,M,N)
[0062] The data element M has been received when the RPAi is sent, the data element N is the data element obtained by the smartphone SP.
[0063] If the smartphone SP receives a data frame TD' transmitted by a vehicle Vi' other than the vehicle it has been authorized to use, the first cipher Vidi used to calculate the encrypted check code R'i will give the result (R' i=Fc(Vi...
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