![]() ![]() The sequence of values generated by LFSRs can be used in the encryption (scrambling) and decryption (unscrambling) of data. LFSRs are used in encryption and decryption applications and cyclic redundancy check applications. The sequence of values generated by LFSRs is determined by its feedback function and tap selection. The data input to the LFSR is generated by XOR-ing or XNOR-ing the tap bits the remaining bits function as a standard shift register. One of the more common forms of LFSR is formed from a simple shift register with feedback from two or more points (taps), in the register chain. LFSRs are simple to construct and useful for a wide range of applications, but are often neglected by designers. ![]() The equivalent of the Ouroboros in the world of electronics is the Linear Feedback Shift Registers (LFSRs), where the output from a standard shift register is manipulated and fed back into its input for causing the function to endlessly cycle through a sequence of patterns. Abstract:The Ouroboros – a symbol of a serpent or dragon devouring its own tail and thereby forming a circle – have been used by a variety of ancient cultures around the world to depict eternity or renewal.
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