Method and system for encrypting bus using improved difference transition code

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.

Description

technical field [0001] The present invention generally relates to a bus data transmission system, and more specifically, the present invention relates to a method and device for adopting data encryption for differential mode transitional coding (Transitional Coding). Background technique [0002] Today, the dramatic increase in circuit density and speed available in microchips has in turn required a corresponding increase in on-chip operating capabilities and performance. However, such improvements themselves start to create certain other problems, for example, the performance of conventional data bus technologies. It is increasingly difficult to provide very high off-chip input bandwidth and output bandwidth (i.e., data transfer to and from the microchip), because they need to effectively use this significantly increased On-chip operation capability. [0003] One solution to this dilemma is to use wider bus data paths. However, this approach requires an increased number ...

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Problems solved by technology

Therefore, the data is not secure because it can be accessed in unencrypted form

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