A lot of CRC's go into embedded, no builtins available. On PC's standard 8/16/32... | Hacker News

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		childintime on Oct 12, 2021 \| parent \| context \| favorite \| on: Generic CRC algorithm generator, from Mark Adler A lot of CRC's go into embedded, no builtins available. On PC's standard 8/16/32b CRC's mostly suffice. For embedded, goodluck finding a 12-bit CRC algorithm, and even if you find it, it's for a non optimal, non Koopman CRC [1]. While rolling your own is doable, it's also a risky endeavor, as any error hurts the product like forever. With this generator, the problem that non Koopman CRC's were, is finally solved. [1] https://users.ece.cmu.edu/~koopman/crc/

mytailorisrich on Oct 12, 2021 | [–]

> A lot of CRC's go into embedded, no builtins available.

Indeed. It's all about generating lookup tables from a CRC's polynomial definition.

rurban on Oct 12, 2021 | [–]

On the atmega we usually use just the builtin AES coprocessor. Much faster and smaller than the SW crc.

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