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:
Apr. 07, 2015
Filed:
Jul. 21, 2010
Yannick Seurin, Saulx les Chatreux, FR;
Henri Gilbert, Bures sur Yvette, FR;
Yannick Seurin, Saulx les Chatreux, FR;
Henri Gilbert, Bures sur Yvette, FR;
Orange, Paris, FR;
Abstract
A method for converting, by means of a conversion entity, a first digit into a second digit, the first cipher corresponding to the result of a symmetric probabilistic encryption of an plain message element using a first secret matrix parameterized by a random vector, the second digit corresponding to the result of a symmetric probabilistic encryption of the plain message element using a second secret matrix that is parameterized by the random vector, characterized in that the method includes a step of: calculating the second digit by encrypting the first digit using a secret conversion matrix which is a function of the first and second secret matrices, and which is parameterized by the random vector.