Method and apparatus for fast cryptographic key generation

• US 20020114470A1
• Filed: 12/19/2001
• Published: 08/22/2002
• Est. Priority Date: 12/19/2000
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Mauro, Anthony Patrick II, Espelien, Magdalena
• Granted Patent: US 7,804,961 B2
• Time in Patent Office: Days
• US Class Current: 380/270
• CPC Class Codes: H04L 9/0841 involving Diffie-Hellman or related key agreement protocols
• CPC Class Codes: H04L 9/0861 Generation of secret information including derivation or calculation of cryptographic keys or passwords
• CPC Class Codes: H04L 9/0894 Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage

Abstract

A method and apparatus for fast generation of a cryptographic key. A processor within a wireless communication device generates a public key upon termination of wireless communication. When a user of the wireless communication device desires to initiate a secure communication subsequent to the previous communication, the public key that was generated upon termination of the previous communication is used to engage in secure communications with a second communication device.

Claims

1. A wireless communication device for fast generation of a cryptographic key, comprising:

a memory for storing a cryptographic key;

a processor for generating a public key and a private key, said public key generated upon termination of a wireless communication and stored in said memory, wherein said public key is used for encrypting a subsequent communication by said wireless communication device.