Data encryption and decryption with a key by an N-state inverter modified switching function
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United States of America Patent
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Apr 3, 2012
Grant Date -
Jul 28, 2011
app pub date -
Apr 11, 2011
filing date -
Dec 10, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus for implementing an n-state ripple-adder scheme coder with n≧2 using an n-state reversible switching function and a non-reversible n-state switching function acting upon a first and a second word of at least 2 n-state symbols are disclosed. Corresponding decoding methods and apparatus are also disclosed. A resulting codeword may be a codeword which can be decoded by using the identical or different n-state switching functions in a corresponding ripple adder scheme decoder. Feistel networks and LFSRs apply the coding and decoding. Systems using the coding and decoding methods may be communication, storage and/or financial systems.
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