Thales Dis France Sas

Thales Dis France Sa

Emmanuel Lepavec

Nicolas Vienne

Evangelos Spyropoulos

Xavier Minette De Saint Martin

Guillaume Chi-Dan Phan

Guillaume Phan

Dominique Bouveron

Olivier Poncelet

Provided is a method for securely diversifying a generic application stored in a secure processor of a terminal, said method comprising: Generating at the request of a manager application hosted in an application processor of said terminal, at the level of a distant server, a server challenge; Sending said server challenge to said application; Generating a first message at said application, said first message being function of said server challenge, an application challenge and an unique identifier of said application; Sending said first message to a Root-Of-Trust service hosted in a secure processor of said terminal, said Root-of-Trust service generating an attestation of said first message, said attestation guaranteeing that said first message has not been modified and originates from said secure processor; and Transmitting said attestation of said first message to said distant server in an enablement request message.

Method for securely diversifying a generic application stored in a secure processor of a terminal

The present invention relates to a method for amending the firmware of a device with limited resources, the device comprises a memory unit, and a firmware amending software, and the firmware comprises:

Method for amending the firmware of a resource constrained device

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Gemenos, France

Emmanuel Lepavec