Describe Linear Feedback Shift Register

Describe briefly the term Linear Feedback Shift Register.

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Linear Feedback Shift Register (or LFSR) is an instrument for generating the sequence of binary bits. The register comprises the series of cells which are set by an initialization vector which is, most repeatedly, the secret key. The behaviors of register is regulated through the clock and at the each clocking instant, the contents of cells of register are shifted right by one position, and exclusive-or of the subset of cell contents is placed in the leftmost cell. One bit of output is generally derived throughout this update procedure.

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