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:
Apr. 24, 2007
Filed:
Sep. 20, 2002
Applicants:
Vishnu Shankar, Mountain View, CA (US);
Jason Eaton, Mountain View, CA (US);
Inventors:
Vishnu Shankar, Mountain View, CA (US);
Jason Eaton, Mountain View, CA (US);
Assignee:
Cybersource Corporation, Mountain View, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); G06F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for generating a seed value for use in symmetric encryption includes creating and storing a first data set and generating a hashed value based on the first data set. A replacement position in the first data set is selected, and at least a portion of the hashed value is written into the first data set at the replacement position. A seed portion of the first data set is selected as the seed value. By varying a number of iterations, a balance can be struck between performance (fewer iterations) and security (more iterations).