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:
Oct. 19, 2004
Filed:
Nov. 13, 2000
James E. Kleckner, Palo Alto, CA (US);
Currenex, Inc., Redwood City, CA (US);
Abstract
One embodiment of the present invention provides a system that uses digital signatures in a novel configuration to perform validations to facilitate a trade. This system operates by receiving a quote related to the trade at a first computer system, wherein the quote includes permission information that facilitates determining permissions that have been granted to a quote maker. Upon receiving the quote, the system validates that the quote maker digitally signed the quote by using a public key of the quote maker to verify that the quote was signed by a corresponding private key belonging to the quote maker. The system also validates that the quote maker has permission to perform the trade by using a public key of a first security officer to verify that the permission information was signed by a corresponding private key belonging to the first security officer, thereby authorizing the quote maker to perform the trade. The system accepts the quote by signing the quote with a private key belonging to a quote receiver, and communicating a trade record, including the signed quote, to the quote maker. In one embodiment of the present invention, the system additionally validates the identity of the quote maker by using a public key of a certification authority to verify that a certificate containing the public key of the quote maker was signed by a corresponding private key belonging to the certification authority. Note that signing by the certification authority indicates that the certification authority has verified the identity of the quote maker.