Method and apparatus for remotely controlling and monitoring the

Details Method and apparatus for remotely controlling and monitoring the Method and apparatus for remotely controlling and monitoring the

1993-04-20

1995-02-07

Black, Thomas G.

Cryptography

Key management

Having particular key generator

395600, 395700, 380 4, 364DIG1, 364260, 36426081, 3642651, 3642854, 3642865, 3642866, G06F 1130, G06F 1540, G06F 1312

Patent

active

053882113

ABSTRACT:
Remote control of the use of computer data is described in a system for renting computer software which derives use and billing information, prevents unauthorized use, maintains integrity of the software and controls related intercomputer communications. A user at a target computer "downloads" programs or data, via a telephone line and remote control modules, from a host computer. Usage of the programs or data by the target computer or other accounting data are recorded and stored and, at predetermined times, the host computer "uploads" the usage data for processing. Other features include: (1) software and usage security for rental programs; (2) a polynomial generator/checker for generating block check characters for assuring integrity of data transmitted and received; (3) a voice-data switch for switching between data communication and normal telephone communication; and (4) an audio amplifier and speaker for monitoring of activity on the communication line during data transfers.

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