Patent ID: 7946487
Filing Date: 2011-05-24
Classification: G06Q,G07D,H04L,Y02A

Abstract:
1. A method for authenticating a pharmaceutical product item, the pharmaceutical product item being associated with packaging having disposed thereon or therein coded data including a number of coded data portions, each coded data portion being indicative of an identity of the pharmaceutical product item and a part of a signature, the signature being a digital signature of at least part of the identity, the signature comprising a plurality of signature parts, the method comprising the steps of: receiving indicating data from a sensing device, the sensing device being responsive to sensing one coded data portion to generate indicating data at least partially indicative of: determining, from the received identity and the received signature part identifier, a determined signature part; authenticating the pharmaceutical product item by comparing the received part of the signature and the determined signature part, wherein the signature is a digital signature of at least part of the identity and padding, and the step of determining the determined signature part comprises sub-steps of: determining, using the received identity of the pharmaceutical product item, the padding; determining, using the padding, the received identity, and a secret key, the determined signature; and determining the determined signature part from the determined signature and the signature part identifier.