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:
Nov. 14, 2003
Sherman (Xuemin) Chen, San Diego, CA (US);
Iue-shuenn Chen, San Diego, CA (US);
Robert Brownhill, San Diego, CA (US);
Wade K. Wan, Irvine, CA (US);
Sherman (Xuemin) Chen, San Diego, CA (US);
Iue-Shuenn Chen, San Diego, CA (US);
Robert Brownhill, San Diego, CA (US);
Wade K. Wan, Irvine, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
Certain aspects of the invention for producing a secure key may comprise a secure key generator that receives a first, second and third input keys and utilizes these keys to generate a first output key. The first, second and third input keys may be a customer key, customer key selection and key variation, respectively. The first output key may be generated so that it is unique, differs from the first input key and is not a weak or semi-weak key. The first, second and third input keys may be mapped to generate mapped output key data and an intermediate key generated based on the first input key. The intermediate key and the output key data may be scrambled to create a scrambled output. At least a portion of the output key data may be masked and XORed with the scrambled output to generate the first output key.