Data card verification system

Patent metadata

Field	Value
Publication number	US-8966271-B2
Application number	US-201213609153-A
Country	US
Kind code	B2
Filing date	Sep 10, 2012
Priority date	Feb 3, 1997
Publication date	Feb 24, 2015
Grant date	Feb 24, 2015

Abstract

To verify a pair of correspondents in an electronic transaction, each of the correspondents utilizes respective parts of first and second signature schemes. The first signature scheme is computationally more difficult in signing than verifying and the second signature scheme is computationally more difficult in verifying than signing. The first correspondent signs information according to the first signature scheme, the second correspondent verifies the first signature received from the first correspondent, using the first signature scheme. The second correspondent then signs information according to the second signature scheme and the first correspondent verifies the second signature received from the second correspondent, according to the second signature algorithm. The method thereby allows one of the correspondents in participate with relatively little computing power while maintaining security of the transaction.

First claim

The invention claimed is:

1. A method performed at a first computing device in a communication system, said method comprising:
receiving a first signed message from a second computing device in said communication system, said first signed message generated using a signing algorithm of a first signature scheme;
utilizing a verifying algorithm of said first signature scheme to verify said first signed message;
signing a message by utilizing a signing algorithm of a second signat…

Assignees

• Vanstone Scott A
• Certicom Corp

Inventors

• Vanstone Scott A

Classifications

• G06Q20/341

  Physics · mapped topic

• G06Q20/40975

  Physics · mapped topic

• H04L9/3066

  Electricity · mapped topic

• H04L9/3249

  Electricity · mapped topic

• G06Q20/3825

  Physics · mapped topic