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:
Aug. 12, 2014
Filed:
Jun. 29, 2007
Giovanni Fontana, Naples, IT;
Saverio Donatiello, Mercogliano, IT;
Giovanni Di Sirio, Salerno, IT;
STMicroelectronics International N.V., Geneva, CH;
Abstract
A method for protecting data against power analysis attacks includes at least a first phase of executing a cryptographic operation for ciphering data in corresponding enciphered data through a secret key. The method includes at least a second phase of executing an additional cryptographic operation for ciphering additional data in corresponding enciphered additional data. An execution of the first and second phases is undistinguishable by the data power analysis attacks. Secret parameters are randomly generated and processed by the at least one second phase. The secret parameters include an additional secret key ERK for ciphering the additional data in the corresponding enciphered additional data.