Rollup certification in a reader

Details Rollup certification in a reader Rollup certification in a reader

G - Physics

07

F

G07F 7/10 (2006.01) G07F 7/08 (2006.01) G07F 9/08 (2006.01)

Patent

CA 2285642

The invention concerns a method for rollup certification which comprises the following steps: during data exchange between an electronic purse and a reader, transmitting (22) from the reader to the electronic purse the rollup contained in the reader, a certificate associated with said rollup and a cryptographic public key corresponding to an unknown private key, with which the certificate has been produced from the rollup; decrypting (24) in the smart card the certificate from the public key and verifying (25) that the rollup is consistent; for the next transaction, computing (21) a new rollup then a new certificate (31) from a private key pertaining to the receiver card; then sending (33) to the reader the new rollup, the new certificate and the public key corresponding to the card which has just carried out the operation, thereby eliminating the need to store in the reader a security circuit to carry out certification.

Lors de l'échange d'informations entre un porte-monnaie électronique et un lecteur, on transmet (22) du lecteur au porte-monnaie électronique le cumul contenu dans le lecteur, un certificat associé à ce cumul et une clé publique de chiffrement correspondant à une clé privée, inconnue, avec laquelle le certificat a été élaboré à partir du cumul. Dans la carte à puce on déchiffre (24) le certificat à partir de la clé publique et on vérifie (25) que le cumul est cohérent. Pour une transaction suivante, on calcule (21) un nouveau cumul puis un nouveau certificat (31) à partir d'une clé privée propre à la carte réceptrice. On envoie (33) ensuite au lecteur le nouveau cumul, le nouveau certificat et la clé publique correspondant à la carte qui vient d'effectuer l'opération. On montre qu'en agissant ainsi on n'a plus besoin de stocker dans le lecteur un circuit sécurisé pour faire des certifications.

Affiliated with

Also associated with

Rating

Rollup certification in a reader does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rollup certification in a reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rollup certification in a reader will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1808088