Patent ID: 11908273
Assignee: SEAL NETWORK B.V.
Field: Furniture, games (Other fields)
Classification: CPC G  A | IPC G

Claim 26:
27. A playing card authentication method to authenticate an electronic playing card, the method comprising:
wirelessly sending a digital command over an antenna to the playing card to cause the playing card to create an authentication token, the playing card comprising an electronic memory storing authentication data, and a counter, creating the authentication token comprises applying a cryptographic function to the authentication data and the counter, wherein the authentication data stored in the playing card comprises a private key of a public/private key pair, and/or a symmetric key,
wirelessly receiving the authentication token from the device through the antenna,
having the authentication token verified with the counter and authentication data stored in the memory of a playing card authentication server, wherein the authentication data stored in the playing card authentication server comprises the public key of the public/private key pair, and/or a symmetric key.