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Computation of CRC

Код 3465061

  • ISBN: 978-5-5092-7528-9

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High Quality Content by WIKIPEDIA articles! Computation of a cyclic redundancy check is derived from the mathematics of polynomial division, modulo two. In practice, it resembles long division of the binary message string, with a fixed number of zeroes appended, by the "generator polynomial" string except that exclusive OR operations replace subtractions. Division of this type is efficiently realised in hardware by a modified shift register, and in software by a series of equivalent algorithms, starting with simple code close to the mathematics and becoming faster (and arguably more obfuscated) through byte-wise parallelism and space-time tradeoffs.

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ISBN: 978-5-5092-7528-9

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