Patent · US Active

Method, apparatus and system for resistance to side channel attacks on random number generators

US7496616B2 · kind B2 · utility

10Cited by

5References

1Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Suresh N. Chari · Yorktown Heights, US
Vincenzo V. Diluoffo · Sandy Hook, US
Paul A. Karger · Chappaqua, US
Elaine R. Palmer · Hanover, US
Tal Rabin · Yonkers, US
Josyula R. Rao · Briarcliff Manor, US
Pankaj Rohatgi · Hartsdale, US
Helmut Scherzer · Lörrach, DE
Michael Steiner · Windom, US
David C. Toll · Wappingers Falls, US

Key dates

Filing date	Nov 12, 2004
Grant date	Feb 24, 2009
Priority date	—
Expiry date	May 29, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/0662
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A random number generator (RNG) resistant to side channel attacks includes an activation pseudo random number generator (APRNG) having an activation output connected to an activation seed input to provide a next seed to the activation seed input. A second random number generator includes a second seed input, which receives the next seed and a random data output, which outputs random data in accordance with the next seed. An input seed memory is connected to the activation seed input and a feedback connection from the activation output so that the next seed is stored in the input seed memory to be used by the APRNG as the activation seed input at a next startup cycle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.