Cryptography – Key management – Having particular key generator
Patent
1991-01-15
1992-12-29
Gregory, Bernarr E.
Cryptography
Key management
Having particular key generator
380 50, 3701001, H04J 306
Patent
active
051757672
ABSTRACT:
An in-band framing encoder having a data input and a data output, for continuously operating a CPE-framed-data signal having CPE-framing data and payload data. The CPE-framed-data signal includes a plurality of time-division-multiplexed frames of payload data achieving channel integrity with CPE-framing data. The encoder comprises a framing-data detector coupled to the data input for detecting the CPE-framing data of CPE-framed-data signal, and a framing-data remover removes the CPE-framing data from the CPE-framed-data signal. A unique-bit-pattern generator generates a unique-bit-pattern sequence. A multiplexer multiplexes the unique-bit-pattern sequence with payload data over the plurality of time-division-multiplexed frames of payload data, thereby generating an in-band-framed-data signal having the unique-bit pattern sequence multiplexed with the payload data. The in-band framing decoder continuously operates on in-band-framed-data signal having a unique-bit pattern sequence multiplexed with payload data, wherein the in-band-framed-data signal includes a plurality of time-division-multiplexed frames of payload data having channel integrity maintained with the unique-bit-pattern sequence. The decoder includes a shift-register chain and a unique-bit-pattern-sequence detector for detecting the unique-bit-pattern sequence in the in-band-framed-data signal. In response to detecting the unique-bit-pattern sequence the unique-bit-pattern-sequence detector generates a synchronization signal. In repsonse to the synchronization signal a unique-bit-pattern-sequence masker masks the unique-bit-pattern sequence in the in-band-framed-data signal thereby generating a masked-data signal. A framing-bit inserter inserts CPE-framing data into the masked-data signal.
REFERENCES:
patent: 3928726 (1975-12-01), Colton et al.
patent: 3940736 (1976-02-01), Inaba et al.
patent: 3985967 (1976-10-01), Colton et al.
patent: 4410990 (1983-10-01), Wilkinson
patent: 4680766 (1987-07-01), Wilkinson
patent: 4682334 (1987-07-01), Le Mouel et al.
patent: 4797654 (1989-01-01), Young et al.
patent: 4866773 (1989-09-01), Lubarsky
Gregory Bernarr E.
Simulation Laboratories, Inc.
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