Cryptography
A linear feedback shift register (LFSR) is a shift register whose input bit is a linear function of its previous state, often implemented using exclusive OR (XOR) operations. LFSRs are primarily used in generating pseudo-random sequences and are foundational elements in stream ciphers, where their ability to produce long sequences of bits efficiently plays a crucial role in cryptographic applications. They leverage polynomial feedback to create complex patterns that mimic randomness, making them useful in various digital communications and security protocols.
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