Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
System and method for user authentication with exposed and hidden keys










Image Number 10 for United States Patent #8132020.

The present invention relates to a system and method for digitally authenticating users both online and offline. In one embodiment, a hardware token assigned by a trusted token provider to the user is employed to ensure the identity of the user. In the online authentication, the token is adapted for generating an exposed key EK and a hidden key HK based on a noise code NC and a time code TC of the token, a space code SC of a service server, and an owner code OC of the user. A login session is initialized by entering a user identifier at the service server and the generated EK from a computing device. The service server computes an expose key CEK and a hidden key CHK based one an authentication license generated by the token provider. The service server authenticates the user if the CEK is same as the EK, and sends a response message encrypted the CHK to the computing device. Then, the user provides the HK to the computing device to decrypt the encrypted response message so as to access his/her account. In the offline authentication, the token is adapted for generating a license exposed key LEK used to render the encrypted digital content on an offline compliant device. The compliant device authenticates the user if a license exposed key computed by the compliant device based on a content license of which the user bought is same as LEK, so as to render the protected digital content after authentication.








 
 
  Recently Added Patents
Method for the treatment, alleviation of symptoms of, relieving, improving and preventing a cognitive disease, disorder or condition
Sink
Triple-action pest control formulation and method
Carrier or transport strip
Mobile communication device monitoring systems and methods
System for determining potential lot consolidation during manufacturing
Targeted gene deletions for polysaccharide slime formers
  Randomly Featured Patents
Compositions and methods for therapeutic use
Conferencing system, terminal apparatus communication method and storage medium for storing the method
Substituted [2-(1-piperazinyl)ethoxy]methyl compounds
Combination-operated coiled cable lock
Methods and apparatus for clustering news content
Corn head with variable knife and gathering belt speed
Laser pistol and method or system for retrofitting sharpshooting pistols
Apparatus for continuous pickling of cast rod
Pulse width modulation regulator system with automatically switching pulse skipping mode
Lubrication system for an engine