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. 06, 2004
Filed:
Oct. 28, 1999
Jonathan T. Trostle, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method for a first participant to establish a shared secret with a second participant, where the first participant and the second participant share a password-based first master key and a hash function includes sending a first message including a first private value for the second participant and a first authenticator for the second participant encrypted with the first master key. The first message also includes a first hashed authenticator for the first participant encrypted with a first shared secret key. The first message also includes a first public value for the first participant. The first participant receives a second message, the second message including the first authenticator for the second participant and a first public value for the second participant encrypted with the first shared secret key. The first participant sends a third message, the third message including the first authenticator for the first participant, a second hashed authenticator for the first participant, a second authenticator for the second participant and a second master key encrypted with a second shared secret key. The third message also includes a second public value for the first participant. A fourth message is received by the first participant, the fourth message including a second authenticator for the second participant and a second public value for the second participant encrypted with the second shared secret key.