Sequence generator

Details Sequence generator Sequence generator

1992-06-22

1993-06-22

Cain, David

Cryptography

Key management

Having particular key generator

36422421, 364717, H04L 900

Patent

active

052221423

ABSTRACT:
An improved sequence generator. The inventive generator (10) is adapted for use with a source (12) for providing successive bits of random data. The invention (10) includes a shift register (18) with a feedback loop. The shift register (18) stores bits of random data. Input to the shift register (18) is determined by a switch (16) which selects between the random data source (12), in a first mode of operation, and the feedback loop, in a second mode of operation. A control logic circuit (20) triggers the switch from the second mode to the first mode, for one clock cycle, as the random data source (12) provides a each successive bit of random data. Thus, optimum performance is obtained without the need to gate clock signals or to control the operation of the shift register.

REFERENCES:
patent: 3582882 (1971-06-01), Titcomb
patent: 3946215 (1976-03-01), May
patent: 4348597 (1982-09-01), Weber
patent: 4495560 (1985-01-01), Sugimoto et al.
patent: 4771429 (1988-09-01), Davis et al.
patent: 4903266 (1990-02-01), Hack
patent: 4905176 (1990-02-01), Schulz
patent: 5079733 (1992-01-01), Antoine et al.

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