Diversification of a single integrated circuit identifier
First Claim
1. A method of generation of several secret quantities by an integrated circuit according to an application of these secret quantities, comprising generating, by the integrated circuit, a first digital word forming a single identifier of the integrated circuit by measuring, using a physical parameter network, a value of an electrical parameter of the integrated circuit, the measured value of the electrical parameter being sensitive to technological and manufacturing process dispersions of the integrated circuit, and converting the measured value to the first digital word, and modifying, by the integrated circuit based on an application of the integrated circuit requiring a secret quantity, the first digital word to form an individualized secret quantity required by the application, different secret quantities being generated by the integrated circuit for different applications of the integrated circuit and each of the secret quantities being derived from the physical parameter network.
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Accused Products
Abstract
A method and a circuit of generation of several secret quantities by an integrated circuit according to the destination of these secret quantities, including taking into account a first digital word forming a single identifier of the integrated circuit chip and coming from a physical parameter network, and of individualizing this identifier according to the application.
46 Citations
19 Claims
- 1. A method of generation of several secret quantities by an integrated circuit according to an application of these secret quantities, comprising generating, by the integrated circuit, a first digital word forming a single identifier of the integrated circuit by measuring, using a physical parameter network, a value of an electrical parameter of the integrated circuit, the measured value of the electrical parameter being sensitive to technological and manufacturing process dispersions of the integrated circuit, and converting the measured value to the first digital word, and modifying, by the integrated circuit based on an application of the integrated circuit requiring a secret quantity, the first digital word to form an individualized secret quantity required by the application, different secret quantities being generated by the integrated circuit for different applications of the integrated circuit and each of the secret quantities being derived from the physical parameter network.
- 8. A cell for generating several secret quantities by a single identifier of an integrated circuit generated by a physical parameter network that measures a value of an electrical parameter of the integrated circuit, the measured value of the electrical parameter being sensitive to technological and manufacturing process dispersions of the integrated circuit, and converting the measured value to a first digital word forming the identifier, including means modifying, by the integrated circuit based on an application of the integrated circuit requiring a secret quantity, the first digital word to form an individualized secret quantity required by the application, different secret quantities being generated by the integrated circuit for different applications of the integrated circuit and each of the secret quantities being derived from the physical parameter network.
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12. A method for generating individualized secret quantities by an integrated circuit, comprising:
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generating, by the integrated circuit, a single identifier of the integrated circuit by measuring, using a physical parameter network, an analog value of an electrical parameter of the integrated circuit, the measured value of the electrical parameter being sensitive to technological and manufacturing process dispersions of the integrated circuit, and converting the measured analog value to the single identifier, the identifier forming a signature of the integrated circuit; and modifying, by the integrated circuit, the identifier based on an application of the integrated circuit requiring a secret quantity to form an individualized secret quantity, such that different secret quantities are generated by the integrated circuit for different applications of the integrated circuit and each of the secret quantities is derived from the physical parameter network. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification