Thales Dis France Sas

Thales Dis France Sa

Guillaume Huysmans

Benoit Gonzalvo

Milas Fokle

Milas Fokle Kokou

A method for building a predefined secret value allocated to a first pod belonging to a node of a system having a second pod. The system includes a first storage area whose access is restricted to the node and a second storage area whose access is restricted to the second pod. The second pod retrieves a first value stored in a third storage area and a second value stored in the second storage area, and computes a third value by applying a first function to the first and second values. The second pod retrieves a fourth value stored in the first storage area and computes a fifth value by applying a second function to the third and fourth values. The first pod retrieves a sixth value stored in the first pod and computes the predefined secret value by applying a third function to the fifth and sixth values.

Method for building a predefined secret value

The invention is a method for managing an application that includes a generic part and an additional part. The generic part is pre-installed on a device. The device gets a fingerprint of itself and after a user authentication sends to a server a request for getting the additional part. The request comprises credentials associated with the user or a reference of the user, the fingerprint and a reference of the application. The server generates a ciphered part of the additional part using a key based on both the credentials and the fingerprint and builds an auto-decrypt program configured to decipher the ciphered part. The device receives the ciphered part and the auto-decrypt program. It gets the fingerprint and the credentials and retrieves the additional part by running the auto-decrypt program with said fingerprint and credentials as input parameters.

Growing community of inventors

Gemenos, France

Guillaume Huysmans