crc 3.0.0

Rust implementation of CRC(16, 32, 64) with support of various standards


rust Crate Docs License

Rust implementation of CRC(8, 16, 32, 64). MSRV is 1.46.


Add crc to Cargo.toml

crc = "2.0"

Compute CRC

use crc::{Crc, Algorithm, CRC_16_IBM_SDLC, CRC_32_ISCSI};

pub const X25: Crc<u16> = Crc::<u16>::new(&CRC_16_IBM_SDLC);
pub const CASTAGNOLI: Crc<u32> = Crc::<u32>::new(&CRC_32_ISCSI);

assert_eq!(X25.checksum(b"123456789"), 0x906e);
assert_eq!(CASTAGNOLI.checksum(b"123456789"), 0xe3069283);

// use custom algorithm
const CUSTOM_ALG: Algorithm<u16> = Algorithm {
    width: 16,
    poly: 0x8005,
    init: 0xffff,
    refin: false,
    refout: false,
    xorout: 0x0000,
    check: 0xaee7,
    residue: 0x0000
let crc = Crc::<u16>::new(&CUSTOM_ALG);
let mut digest = crc.digest();
assert_eq!(digest.finalize(), 0xaee7);


cargo bench with 2.6 GHz Intel Core i7. Comparison

crc16          time:   [2.0082 ms 2.0206 ms 2.0367 ms]
               thrpt:  [468.25 MiB/s 471.96 MiB/s 474.89 MiB/s]

crc32          time:   [1.7659 ms 1.7793 ms 1.7952 ms]
               thrpt:  [531.25 MiB/s 535.98 MiB/s 540.05 MiB/s]

crc64          time:   [2.0655 ms 2.0803 ms 2.0973 ms]
               thrpt:  [454.71 MiB/s 458.43 MiB/s 461.72 MiB/s]


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Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.