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:
Feb. 24, 2015
Filed:
Oct. 11, 2010
Subramaniyam Chandrasekaran, Bangalore, IN;
Shunmugam Murugan, Bangalore, IN;
Arun C. Ramachandran, Bangalore, IN;
Lakshmanan Velusamy, Bangalore, IN;
Subramaniyam Chandrasekaran, Bangalore, IN;
Shunmugam Murugan, Bangalore, IN;
Arun C. Ramachandran, Bangalore, IN;
Lakshmanan Velusamy, Bangalore, IN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A confidential information exchange between a sender and a receiver may be conducted without the use of encryption keys. The information is coded with a Challenge-Response Table that is shared between the sender and the receiver. Rather than sending a challenge and then waiting for a response, the challenge and response are both sent by the sender of the information. The information sent comprises an index with a challenge and a response from the Challenge-Response Table. Upon receiving the coded information, the receiver uses the Challenge-Response Table to decode the information by using the index to locate the challenge and its valid response. Upon determining that the challenge and the response are correct, a first decoded answer is determined. Upon determining that either the challenge or the response, or both, are incorrect, a second decoded answer is determined.