Telegraphy – Systems – Printing
Patent
1979-06-04
1981-07-14
Buczinski, S. C.
Telegraphy
Systems
Printing
200 6108, 364200, 364900, H04L 900
Patent
active
042788374
ABSTRACT:
A microprocessor for executing computer programs which are stored in cipher to prevent software piracy. Such a crypto-microprocessor deciphers the enciphered program piecemeal as it executes it, so that a large enciphered program can be securely executed without disclosing the deciphered program or associated data to persons who have access to the wiring of the computer in which the crypto-microprocessor is a component. Such a device may process valuable proprietary programs and data files which are distributed in cipher on videodiscs, semiconductor memory, or other media without risk of software piracy. Various methods of encryption may be used including methods which result in the cipher of a byte being a complicated function of the byte's address in memory. Each crypto-microprocessor chip may use a unique cipher key or tables for deciphering the program, so that a program that can be executed in one chip cannot be run in any other microprocessor.
REFERENCES:
patent: 3504132 (1970-03-01), Wallace, Jr.
patent: 3764742 (1973-10-01), Abbott et al.
patent: 3798359 (1974-03-01), Feistel
patent: 3878331 (1975-04-01), Morgan et al.
patent: 3906460 (1975-09-01), Halpern
patent: 3911216 (1975-10-01), Bartek et al.
patent: 3944976 (1976-03-01), France
patent: 3958081 (1976-05-01), Ehrsam et al.
patent: 4004089 (1977-01-01), Richard et al.
patent: 4037215 (1977-07-01), Birney et al.
patent: 4074066 (1978-02-01), Ehrsam et al.
patent: 4120030 (1978-10-01), Johnstone
Von Frank J. Furrer, Elektroniker, (German), vol. 16, No. 3, 1977, p. ELI-7.
Motorola Des 3100 NSM Network Security Module Preview (brochure), 16 Feb. 1979, 178-22.
Hard Node (brochure), Complan, Computation Planning, Inc. 28 Mar. 1977, 178-22.
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