US PATENT SUBCLASS 380 / 46
.~.~.~ Nonlinear (e.g., pseudorandom)

Current as of: June, 1999
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380 /   HD   CRYPTOGRAPHY

9  DF  ELECTRIC SIGNAL MODIFICATION (E.G., SCRAMBLING) {18}
42  DF  .~ Data stream/substitution enciphering {2}
44  DF  .~.~ With particular key generator {3}
46.~.~.~ Nonlinear (e.g., pseudorandom)

DEFINITION

Classification: 380/46

Nonlinear (e.g., pseudorandom):

(under subclass 44) Subject matter wherein the key signal does not vary in a constant or predictable manner.

(1) Note. Included herein is a pseudorandom key signal generator.