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. 12, 2008
Filed:
Jul. 27, 2000
Deepak Gupta, Delhi, IN;
Vamsavardhana Reddy Chillakuru, Mount Kisco, NY (US);
Deepak Gupta, Delhi, IN;
Vamsavardhana Reddy Chillakuru, Mount Kisco, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
This invention relates to a method for enabling the use of valid authentication certificates when the public key and private keys of any of the certifying authority have expired, comprising obtaining a server certifying authority chain (SCAC) certificate by the server from the said certifying authority, presenting the original valid authentication certificate along with the said server certifying authority chain certificate by the server to the browser during the SSL handshake, accepting the transaction by the browser after verification of the original authentication certificate using the expired public key of the certifying authority, and verifying the said SCAC certificate using the new public key of the said certifying authority. This invention further includes a system conducting secure transactions including a certifying authority for authenticating such transactions.