Cryptography – Particular algorithmic function encoding – Public key
Patent
1983-11-30
1989-02-21
Cangialosi, Salvatore
Cryptography
Particular algorithmic function encoding
Public key
380 4, 380 25, 235382, 364200, H04L 904
Patent
active
048072885
ABSTRACT:
One chip microprocessor, which is more particularly designed to execute culation algorithms of a public code encoding system formed by a public function and a secret inverse function of the type comprising at least one programmable read-only memory, a processing unit and an input/output device, wherein it comprises a memory, in which is recorded at least one algorithm corresponding to the performance of said secret function, and wherein the programmable read-only memory contains the secret parameters constituting the secret code and recorded in an area of the read-only memory which is inaccesible from the outside, the processing unit including the multiplying circuits necessary for the execution of the algorithm.
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Guillou Louis
Ugon Michel
C.I.I. Honeywell Bull
Cangialosi Salvatore
Establissement Public de Diffusion dit "Telediffusion de France"
Etat Francais represente par le Ministre des P.T.T. (C.N.E.T.)
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