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User trusted device to attest trustworthiness of initialization firmware

  • US 9,639,690 B2
  • Filed: 11/26/2013
  • Issued: 05/02/2017
  • Est. Priority Date: 12/14/2012
  • Status: Active Grant
First Claim
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1. A user trusted device, comprising:

  • a connection interface enabling connection with a computer; and

    a persistent memory storing modules, which are configured, upon connection of the user trusted device with said computer via said connection interface, to;

    enable said computer to start booting from the user trusted device;

    map firmware data to a corresponding mapping code, the firmware data comprising program code of an initialization firmware stored in the computer while starting to boot;

    attest trustworthiness of the mapping code, a stored verification module configured to instruct, upon execution, a checking of the mapping code against a list of mapping codes attesting good states of the initialization firmware,wherein the list of mapping codes is stored in an external entity connected with the device through a communication network, and wherein the mapping code is obtained by mapping the firmware data; and

    enable said computer to complete booting from the user trusted device if the mapping code is attested.

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