Dismiss
InnovationQ/InnovationQ Plus content will be updated on Sunday, June 25, 10am ET, with new patent and non-patent literature collections. Click here to learn more.
Browse Prior Art Database

AUTO KEY GENERATION

IP.com Disclosure Number: IPCOM000008231D
Original Publication Date: 1997-Sep-01
Included in the Prior Art Database: 2002-May-29
Document File: 2 page(s) / 85K

Publishing Venue

Motorola

Related People

Bhavesh S. Shah: AUTHOR [+5]

Abstract

Many systems use encryption techniques to protect sensitive voice/data information heing transmitted over the air. Both the transmitting and the receiving end need to have the same encryption key to encrypt and decrypt the voice/data success- fully. An example of an OTAR (Over The Air Rekeying) system is shown in Figure 1. At the center of the system is the Key Management Facility (KMF). It is the master key generator that distributes the encryption keys to the different secure unns over the air using the fixed infrastruc- ture equipmenr. A Key Variable Loader(KVL) is used to load the encryption keys into the Encryption Module Controller(EMC) of the KMF and the secure units.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 55% of the total text.

Page 1 of 2

MO-LA Technical Developments

@

AUTO KEY GENERATION

by Bhavesh S. Shah, Donald Beyer, Brett Szudy, Ferdinand Brillantes,

and Ronald L. Shaffer II

BACKGROUND

  Many systems use encryption techniques to protect sensitive voice/data information heing transmitted over the air. Both the transmitting and the receiving end need to have the same encryption key to encrypt and decrypt the voice/data success- fully. An example of an OTAR (Over The Air Rekeying) system is shown in Figure 1. At the center of the system is the Key Management Facility (KMF). It is the master key generator that distributes the encryption keys to the different secure unns over the air using the fixed infrastruc- ture equipmenr. A Key Variable Loader(KVL) is used to load the encryption keys into the Encryption Module Controller(EMC) of the KMF and the secure units.

  The KMF may need to store several keys per secure unit. Each one of these keys has to be manually entered into the KMF via a KVL or could be entered via the KMF terminal. As the number of units increases and the number of encryption keys per unit increas,es, the keyloading process becomes

very cumbersome and a time-consuming task for the user.

SOLUTION

  With the new feature of Auto Key Generation, the user will have to enter only a single key into the KMF (via a KVL or terminal). This key will act as the initial "seed." The KMF will send this seed to an encryption module(EMC) to securely auto generate N keys from the initial seed using one...