Struct Crc32 

pub struct Crc32 { /* private fields */ }

CRC32C hasher.

Uses the iSCSI polynomial (0x1EDC6F41) as specified in RFC 3720.

Implementations

impl Crc32

pub fn checksum(data: &[u8]) -> u32

Compute a CRC32 checksum of the given data (one-shot).

Returns the checksum as a u32 directly.

pub fn resume(checksum: u32) -> Self

Resume a CRC32C stream from a previously finalized checksum.

Trait Implementations

impl Debug for Crc32

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Crc32

fn default() -> Self

Returns the “default value” for a type.

impl Hasher for Crc32

type Digest = Digest

Digest generated by the hasher.

fn hash(parts: &[&[u8]]) -> Self::Digest

Hash the concatenation of parts in a single shot.

fn hash_pair( left: &[&[u8]], right: &[&[u8]], _strategy: &impl Strategy, ) -> (Self::Digest, Self::Digest)

Hash two messages, each given as a concatenation of parts, in a single shot, splitting the work across strategy when the hash function allows it.

fn update(&mut self, message: &[u8]) -> &mut Self

Append bytes to the hasher’s running state.

fn finalize(self) -> (Self, Self::Digest)

Consume the hasher, returning a freshly-reset hasher alongside the digest of everything written so far.

fn hash_across(parts: &[&[u8]], _strategy: &impl Strategy) -> Self::Digest

Hash the concatenation of parts in a single shot, splitting the work across strategy when the hash function allows it.

fn hash_many<M: AsRef<[u8]> + Sync>( messages: &[M], strategy: &impl Strategy, ) -> Vec<Self::Digest>

Hash multiple independent byte slices, splitting them across strategy.