Apparatus and Method for Detecting Integrity Violation

摘要

An apparatus for detecting integrity violation includes a feedback shift register including a plurality of registers connected in series, and a feedback function unit connected between an output of a number of the registers and an input of at least one of the registers. The apparatus further includes an integrity violation detector adapted to determine as to whether a sequence of values at an input or output of at least one of the registers, or a logic combination thereof, is a non-constant sequence or a constant sequence. The apparatus is further adapted to output an indication that the feedback shift register is in an integral state if the sequence of values is a non-constant sequence, or to output an indication that the feedback shift register is subjected to an integrity violation if the sequence of values is a constant sequence.

主权项

1. An apparatus, comprising:
a feedback shift register comprising:
a plurality of registers connected in series, anda feedback function unit connected between an output of a number of the registers and an input of at least one of the registers; and an integrity violation detector adapted to:
determine as to whether a sequence of values at an input or output of at least one of the registers, or a logic combination thereof, is a non-constant sequence or a constant sequence; andoutput an indication that the feedback shift register is in an integral state if the sequence of values is a non-constant sequence; oroutput an indication that the feedback shift register is subjected to an integrity violation if the sequence of values is a constant sequence.