Orange

France Telecom

Pascal Nourry

Olivier Charles

Stéphanie Relier

François Daude

A management method for authenticating a user of a device on an equipment item that is accessed by password. The method includes: acquiring a first password by the equipment item, the password being a result of a calculation based on a first secret data item; access by the user to the equipment item, which includes: the equipment item receiving a second password which is calculated by the device based on a second secret data item; and authenticating the user of the device on the equipment item if the second password received during the receiving corresponds to the first password obtained during the acquisition.

Management method for authenticating a user of a device on an equipment item by password

Digital data blocks are encrypted, each data block that is to be encrypted being associated with a time reference. A value of an initialization vector Vi and an encryption key K are defined. Then, a counter C is obtained for each data block to be encoded, by combining the time reference and the value of the initialization vector. A series of binary encryption elements is obtained via an encryption function taking the encryption key K and counter C as input parameters. The data block is then encrypted by combining it with the series of binary encryption elements.

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Rennes, France

Pascal Nourry