Crypto microprocessor for executing enciphered programs

Details Crypto microprocessor for executing enciphered programs Crypto microprocessor for executing enciphered programs

H - Electricity

04

L

354/230, 340/70

H04L 9/00 (2006.01) G06F 12/14 (2006.01) G06F 21/00 (2006.01) G06F 1/00 (2006.01)

Patent

CA 1147823

TITLE CRYPTO MICROPROCESSOR FOR EXECUTING ENCIPHERED PROGRAMS ABSTRACT OF THE DISCLOSURE 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. Various methods of decipher- ing may be used including methods which result in the cipher of a byte being a complex 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.

330777

Affiliated with

Also associated with

Rating

Crypto microprocessor for executing enciphered programs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crypto microprocessor for executing enciphered programs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crypto microprocessor for executing enciphered programs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-928230