Cryptography – Key management – Having particular key generator
Patent
1993-03-15
1994-10-11
Barron, Jr., Gilberto
Cryptography
Key management
Having particular key generator
380 43, 380 50, H04L 924
Patent
active
053554159
ABSTRACT:
A parallel distributed sample scrambling and descrambling system for fixed-sized packet transmission comprising a parallel scrambler and a parallel descrambler. The scrambler includes; a parallel shift register generator 61 for generating parallel sequences; a sampling means 62 for generating samples from said parallel shift register generator 61; a parallel scrambling means 63 for performing parallel scrambling function by modulo-2 adding the parallel sequences to parallel input data sequences; and a multiplexing means 64. The descrambler includes; a demultiplexing means 70; a parallel shift register generator 66 for generating parallel sequences; a sampling means 67 for generating samples from said parallel shift register generator 66; a comparing means 68 for comparing the samples transmitted from the scrambler with the samples generated by said sampling means 67; a correction means 65 for performing correction for samples at each correction time according to the comparison result from said comparing means; and a parallel descrambling means 69 for performing parallel descrambling of the scrambled data sequences by modulo-2 adding the parallel sequences to the scrambled data sequences.
REFERENCES:
patent: 4531022 (1985-07-01), Pioli
patent: 4755987 (1988-07-01), Lee et al.
Report: Parallel Scrambling Techniques for Digital Multiplexlers, AT&T Technical Journal, Author DooWhan Choi, 123-136.
"Self Synchronising Scrambler x.sup.43 +1" CCITT SG SVIII-Melbourne, 2-13, Dec. 1991.
Kim Seok C.
Lee Byeong G.
Barron Jr. Gilberto
Goldstar Information & Communications Ltd.
Kim Seok Chang
Lee Byeong Gi
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