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:
Jul. 21, 2009
Filed:
Feb. 14, 2005
Ravinderpal Singh Sandhu, Oak Hill, VA (US);
Brett Jason Schoppert, Leesburg, VA (US);
Ravi Ganesan, Half Moon Bay, CA (US);
Mihir Bellare, San Diego, CA (US);
Colin Joseph Desa, Herndon, VA (US);
Ravinderpal Singh Sandhu, Oak Hill, VA (US);
Brett Jason Schoppert, Leesburg, VA (US);
Ravi Ganesan, Half Moon Bay, CA (US);
Mihir Bellare, San Diego, CA (US);
Colin Joseph deSa, Herndon, VA (US);
TriCipher, Inc., San Mateo, CA (US);
Abstract
Techniques for generating a multi-factor asymmetric key pair having a public key and split private key with multiple private portions, at least one of the multiple portions being a multiple factor private key portion, are provided. First and second asymmetric key pairs are generated, each having a private key and a public key. A text string and the first private key are cryptographically combined to make a first private key portion of the split private key. This first private key portion is a multiple factor private key portion. A second private key portion of the split private key is generated based upon the generated first private key portion and the second private key.