Electron processing equipment of data signal

Abstract

The processor has an execution unit and store. The data signals are combined in a prefetch unit. The processor uses command store and execution unit, random generator and blocking stage.

Description

technical field [0001] The invention relates to electronic processing equipment for data signals Background technique [0002] Equipment of the types listed are used in entry and access control systems. So-called chip cards constitute an optimal field of application. An electronic processing device for data signals for such applications is provided, for example a so-called security processor. Programs executed in such secure processors to perform access procedures, registration operations, or the like are prime targets for theft. One method for breaking the security of such secure processors is based on the measurement of the processor's input and output currents and the temporal analysis of these currents. Doing so attempts, for example, to discover keys for cryptographic operations or functions of secure programs. Other methods are based on the analysis of reading external codes (which themselves may be, for example, encrypted) in relation to subsequent processes withi...

AI Technical Summary

Problems solved by technology

The microprocessor described in the cited patent attempts to reduce the vulnerability of its operation to attacks based on monitoring an internal clock

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