Good choice for a lightweight checksum algorithm?

Question

I find myself needing to generate a checksum for a string of data, for consistency purposes. The broad idea is that the client can regenerate the checksum based on the payl

Answer 1

Other people have mentioned CRC32 already, but here's a link to the W3C implementation of CRC-32 for PNG, as one of the few well-known, reputable sites with a reference CRC implementation.

(A few years back I tried to find a well-known site with a CRC algorithm or at least one that cited the source for its algorithm, & was almost tearing my hair out until I found the PNG page.)