Cryptography – Communication system using cryptography – Having compression
Patent
1997-05-30
2000-09-19
Swann, Tod R.
Cryptography
Communication system using cryptography
Having compression
380 28, 380217, 706 16, 708203, H04N 7171, H04K 100
Patent
active
061223794
ABSTRACT:
A method and apparatus for performing simultaneous data compression and encryption both compresses and encrypts data in a single step. The invention includes a novel modeling method for use in conjunction with a coder, such as an arithmetic coder. The modeling method introduces randomness into the compression process, with the result that the output stream is secure.
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Darrow Justin T.
Deloitte & Touche Inc.
Feeney William L.
Swann Tod R.
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