Browse Prior Art Database

Data Communications Line Shuffler

IP.com Disclosure Number: IPCOM000101501D
Original Publication Date: 1990-Aug-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Millas, RJ: AUTHOR

Abstract

This article describes a method and mechanism to increase security of data communications through telephone lines.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 60% of the total text.

Data Communications Line Shuffler

       This article describes a method and mechanism to increase
security of data communications through telephone lines.

      Using modern communications line analyzers makes it simple to
monitor data transmissions over a telephone line. Encryption
techniques may be used to deter the interception of data.  A skilled
and determined individual can capture an encrypted data transmission
on a line analyzer with storage capability. This captured encrypted
data can be transferred to a computer system, and given enough time
with the right software tools, the individual may break the
encryption algorithm and decrypt the data.

      The scheme described herein can be used in addition to standard
encryption techniques.  This added measure of security makes it very
difficult for an individual to intercept the data.

      The data communications line shuffler (DCLS) is shown in block
diagram in Fig. 1.  Two parties wishing to communicate agree on the
use of an encryption key for the encryption algorithm they will use.
At the same time they also agree on the use of a shuffle key.  The
encryption key is given to the encryption/decryption mechanism.  The
shuffle key is given to the sequence generator of the DCLS. This
device generates the sequence in which the communication lines will
be shuffled.  This same sequence is generated at the other end.
Therefore, the ongoing communications are shuffled through an N
number of telepho...