Add CRC32C API

[mattbishop]

I have been using a node wrapper of a rust CRC32C implementation: https://github.com/napi-rs/node-rs/tree/main/packages/crc32

This capability makes sense to be in the Deno std lib because it takes advantage of CPU-specific hardware instructions to calculate CRC values. It supports a wide variety of architectures.

[FujiHaruka]

I took a glance at hash/_wasm.

We can add a hash algorithm in rust by adding to this list in lib.rs.

https://github.com/denoland/deno_std/blob/f4496b78ef3874bdc06f6a6de10cdadb97b6f2bb/hash/_wasm/src/lib.rs

All hash structs here implement Digest traits.

However, crc32fast, which is the most popular crc32 library in crates.io, doesn't implement Digest traits. We have something to do in order to import crc32fast to _wasm. (But I don't know much about rust).

[jeremyBanks]

This capability makes sense to be in the Deno std lib because it takes advantage of CPU-specific hardware instructions to calculate CRC values.

deno_std isn't able to take advantage of CPU-specific hardware instructions directly; it's implemented in TypeScript(/JavaScript/WASM). To take full advantage of something it would need to be added to the Deno runtime directly. However, I think WASM SIMD is now supported in Deno's v8, so a WASM implementation might be able to perform competitively? (See here for the change to _build.ts required to enable it, I think, I haven't tested it much: jeremyBanks@d9dd17f#diff-313a3ff5e24b77914cc23ee8c8d0c49b0406f3704ec36962551a2f68d315534cR47)

We can add a hash algorithm in rust by adding to this list in lib.rs.

Sorry, I probably should have left a note in that directory, but hash/_wasm is deprecated and being replaced with hash/crypto/hash/_wasm_crypto (see #1025). The new implementation doesn't require the Digest trait,
it's mostly a bunch of match statements (see https://github.com/denoland/deno_std/blob/main/_wasm_crypto/src/digest.rs), so if we wanted to add CRC support to that interface it should be pretty straightforward.

[iuioiua]

Hi guys, what are your current thoughts on this suggestion now that some time has passed? CC @mattbishop @jeremyBanks

[iuioiua]

I'm going to close this as I haven't seen sufficient demand for this. If anyone is still strongly for having this functionality, please feel free to re-open this issue. Either way, thank you for your input, guys.