US PATENT SUBCLASS 380 / 44
.~.~ With particular key generator

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.~.~ With particular key generator {3}
45  DF  .~.~.~> Multiple key level
46  DF  .~.~.~> Nonlinear (e.g., pseudorandom)
47  DF  .~.~.~> Plural generators

DEFINITION

Classification: 380/44

With particular key generator:

(under subclass 42) Subject matter including a detail of a predetermined digital sequence signal generator.

SEE OR SEARCH CLASS

331, Oscillators,

78, for a random oscillator.

708, Electrical Computers: Arithmetic Processing and Calculating,

250+, for a random digital signal generator.