Rust implementation of CRC(32, 64)
Add crc to Cargo.toml
toml
[dependencies]
crc = "0.3.0"
or
toml
[dependencies.crc]
git = "https://github.com/mrhooray/crc-rs"
Add this to crate root
rust
extern crate crc;
```rust use crc::{crc32, Hasher32};
// CRC-32-IEEE being the most commonly used one asserteq!(crc32::checksumieee(b"123456789"), 0xcbf43926); asserteq!(crc32::checksumcastagnoli(b"123456789"), 0xe3069283); asserteq!(crc32::checksumkoopman(b"123456789"), 0x2d3dd0ae);
// use provided or custom polynomial let mut digest = crc32::Digest::new(crc32::IEEE); digest.write(b"123456789"); assert_eq!(digest.sum32(), 0xcbf43926); ```
```rust use crc::{crc64, Hasher64};
asserteq!(crc64::checksumecma(b"123456789"), 0x995dc9bbdf1939fa); asserteq!(crc64::checksumiso(b"123456789"), 0xb90956c775a41001);
// use provided or custom polynomial let mut digest = crc64::Digest::new(crc64::ECMA); digest.write(b"123456789"); assert_eq!(digest.sum64(), 0x995dc9bbdf1939fa); ```
cargo bench with 2.3 GHz Intel Core i7 results ~400MB/s throughput. Comparison
```
running 14 tests
test crc32::tests::testchecksumcastagnoli ... ignored
test crc32::tests::testchecksumieee ... ignored
test crc32::tests::testchecksumkoopman ... ignored
test crc32::tests::testdigestcastagnoli ... ignored
test crc32::tests::testdigestieee ... ignored
test crc32::tests::testdigestkoopman ... ignored
test crc64::tests::testchecksumecma ... ignored
test crc64::tests::testchecksumiso ... ignored
test crc64::tests::testdigestecma ... ignored
test crc64::tests::testdigestiso ... ignored
test crc32::tests::benchmaketable ... bench: 447 ns/iter (+/- 81)
test crc32::tests::benchupdatemegabytes ... bench: 2479741 ns/iter (+/- 183031)
test crc64::tests::benchmaketable ... bench: 1166 ns/iter (+/- 93)
test crc64::tests::benchupdatemegabytes ... bench: 2478464 ns/iter (+/- 68731)
test result: ok. 0 passed; 0 failed; 10 ignored; 4 measured ```
MIT