Cryptography – Communication system using cryptography – Symmetric key cryptography
Reexamination Certificate
2007-07-24
2007-07-24
Revak, Christopher (Department: 2131)
Cryptography
Communication system using cryptography
Symmetric key cryptography
C380S046000, C380S268000
Reexamination Certificate
active
10242525
ABSTRACT:
The present invention provides data encryption for a differential bus employing transitional coding. The present invention maps, encodes and encrypts input data as a logic status for a given bus transfer cycle. The mapping, encoding and encrypting of the input data changes from bus transfer cycle to bus transfer cycle. The mapping, encoding and encrypting is a function of a pseudo-random number. A logic status is differentially transmitted from a bus transmitter to a bus receiver, to be mapped, decrypted and decoded as the corresponding output data.
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Craft David John
Johns Charles Ray
Carr LLP
Revak Christopher
Rifai D'Ann N.
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