Encoding device

Details Encoding device Encoding device

1997-08-15

1999-11-30

Swann, Tod R.

Cryptography

Electric signal modification

Having production of printed copy

380 9, 380 40, 380 41, H04L 900

Patent

active

059956291

ABSTRACT:
An encoding device includes an encoding unit and an output register downstream of the encoding unit. During a second time period, encoded output data are formed from input data fed to the encoding unit and are written into the output register. After the second time period elapses, no further data are fed to the output register, but power consumption of the output register must not alter. The encoding unit continues to generate output data until a first time period elapses. The encoding device prevents an external observer from drawing any conclusions from the power consumption of the encoding device as to the actual generating period of the encoded output data in the output register.

REFERENCES:
patent: 3515805 (1970-06-01), Fracassi et al.
patent: 3522374 (1970-07-01), Abrahamsen
patent: 3639690 (1972-02-01), Braun et al.
patent: 3657699 (1972-04-01), Rocher
patent: 3700806 (1972-10-01), Vasseur
patent: 4115657 (1978-09-01), Morgan
patent: 4760598 (1988-07-01), Ferrel
patent: 4932053 (1990-06-01), Fuhauf et al.
patent: 5001756 (1991-03-01), Mayginnes et al.
patent: 5179570 (1993-01-01), Imran
patent: 5351292 (1994-09-01), Lindholm
patent: 5825882 (1998-10-01), Kowalski et al.

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