The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 15, 2016
Filed:
Feb. 11, 2009
Sylvain Guilley, Paris, FR;
Jean-luc Danger, Antony, FR;
Sylvain Guilley, Paris, FR;
Jean-Luc Danger, Antony, FR;
INSTITUT TELECOM-TELECOM PARIS TECH, Paris, FR;
Abstract
The present invention relates to a method for testing cryptography circuits. It also relates to a secure cryptography circuit capable of being tested. The cryptography circuit includes registers and logic gates, and a test thereof performs a differential power analysis on the registers of the circuit. A cryptography circuit being secure and including a first half-circuit associated with a second half-circuit operating in complementary logic, the electric power supply of the first half-circuit is separated from the electric power supply of the second half-circuit, the differential power analysis being carried out in parallel on each half-circuit, the two power supplies being combined into one and the same electric power supply after the test.