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:
Sep. 27, 2016
Filed:
Apr. 11, 2008
Applicants:
Aline Gouget, Paris, FR;
Pascal Paillier, Paris, FR;
Inventors:
Aline Gouget, Paris, FR;
Pascal Paillier, Paris, FR;
Assignee:
GEMALTO SA, Meudon, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06Q 20/00 (2012.01); G06Q 20/12 (2012.01); G06Q 20/06 (2012.01); G06Q 20/38 (2012.01); G06Q 20/40 (2012.01);
U.S. Cl.
CPC ...
G06Q 20/12 (2013.01); G06Q 20/06 (2013.01); G06Q 20/3823 (2013.01); G06Q 20/3829 (2013.01); G06Q 20/40 (2013.01);
Abstract
The invention proposes an off-line divisible e-cash scheme where a user can withdraw a divisible coin of monetary value n(n being for example equal to 2) that he can parceled and spend anonymously and unlinkably. The invention allows to protect the anonymity of honest users and to revoke anonymity only in case of cheat for protocols based on a tree structure without using a trusted third party.