Ncipher Corporation Limited

George Robert Blakley

Kyle Stein

Oscar R Mitchell

Scott Kelly Herrington

Randall Findley

Rajat Datta

Richard Goble

A data encryption method performed with ring arithmetic operations using a residue number multiplication process wherein a first conversion to a first basis is done using a mixed radix system and a second conversion to a second basis is done using a mixed radix system. In some embodiments, a modulus C is be chosen of the form 2&#x2212;L, wherein C is a w-bit number and L is a low Hamming weight odd integer less than 2. And in some of those embodiments, the residue mod C is calculated via several steps. P is split into 2 w-bit words Hand L. Sis calculated as equal to L+(H2)+(H2)+ . . . +(H2)+H. Sis split into two w-bit words Hand L. Sis computed as being equal to L+(H2)+(H2)+ . . . +(H2)+H. Sis computed as being equal to S+(2+ . . . +2+1). And the residue is determined by comparing Sto 2. If S&#x3c;2, then the residue equals S. If S&#x2267;2, then the residue equals S&#x2212;2.

Ring arithmetic method, system, and apparatus

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.

Method and system for generating a cryptographically random number stream

Growing community of inventors

Bryan, TX, United States of America

George Robert Blakley