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:
Mar. 10, 2009
Filed:
Sep. 02, 2004
George Robert Blakley, Austin, TX (US);
Randall Findley, Austin, TX (US);
Richard Goble, Cedar Creek, TX (US);
Scott Herrington, Cedar Park, TX (US);
Kyle Stein, Round Rock, TX (US);
George Robert Blakley, Austin, TX (US);
Randall Findley, Austin, TX (US);
Richard Goble, Cedar Creek, TX (US);
Scott Herrington, Cedar Park, TX (US);
Kyle Stein, Round Rock, TX (US);
nCipher Corporation Ltd., Stoneham, MA (US);
Abstract
A method and system for generating a cryptographically random number stream () is provided. A system includes a module () configured to provide at least two statistically random number streams () and () and an oscillator () operably coupled to the module (). The oscillator () is configured to operate at a frequency which varies in response to physically unpredictable events and to select a current number from one of the at least two statistically random number streams () and () based on the oscillator's state. A process includes several steps. At least two statistically random number streams are provided (). A current number is selected () from one of the at least two statistically random number streams based on the state of an oscillator operating at a frequency which varies in response to physically unpredictable events. The step of selecting () is repeated () to create the cryptographically random number stream. The number streams can be carried by signals (), (), and (). An apparatus for performing the process is also disclosed.