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:
Aug. 15, 2000
Filed:
Aug. 15, 1997
Applicant:
Inventors:
William Anthony Aiello, Madison, NJ (US);
Sivaramakrishnam Rajagopalan, Morris Plains, NJ (US);
Ramarathnam Venkatesan, Redmond, WA (US);
Assignee:
Telcordia Technologies, Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; G06F / ;
U.S. Cl.
CPC ...
380 46 ; 708253 ;
Abstract
A pseudo-random number generator is used as a pre-processing step to generating a long random bit string. The bit string is then 'stretched' by performing certain one-way functions in parallel on the bit strings. In a preferred embodiment, specialized constructions based on expander graphs are also used. Preferably, the strings generated by the one-way functions and expander graphs are exclusive-ored. An embodiment may operate in the following manner. Assume a slow but secure generator G.sub.0.