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:
May. 21, 2013
Filed:
Jun. 25, 2004
Ellen H. Siegel, San Carlos, CA (US);
Dwight F. Hare, Encinitas, CA (US);
Tanjore S. Ravishankar, San Jose, CA (US);
Ellen H. Siegel, San Carlos, CA (US);
Dwight F. Hare, Encinitas, CA (US);
Tanjore S. Ravishankar, San Jose, CA (US);
Oracle America, Inc., Redwood City, CA (US);
Abstract
A challenge string is sent from a server to an authentication card. The challenge string is encrypted using a private key on the authentication card. Then, the encrypted challenge string is sent as a response from the authentication card to the server. A unique identifier of the authentication card is correlated to a user record residing at the server to obtain an authentication certificate from within the user record. The authentication certificate includes a public key. The public key from the authentication certificate is used to decrypt the response at the server. A determination is then made as to whether the decrypted response matches the challenge string as originally sent from the server to the authentication card. If the decrypted response matches the original challenge string, the authentication is successful. Otherwise, the authentication fails.