Enum StreamingChecksum 

pub enum StreamingChecksum {
    Sha256(Sha256),
    Crc64nvme(Crc64Nvme),
}

One full-object checksum folded over a payload delivered in pieces.

This is the streaming form of StorageChecksum::matches, for a reader that verifies an object it never holds whole. The two agree about what this build can recompute: StreamingChecksum::for_algorithm answers None for exactly the algorithms matches refuses to judge, so an unverifiable checksum is refused before any bytes move rather than after.

Variants

Sha256(Sha256)

SHA-256 folded over the payload.

Crc64nvme(Crc64Nvme)

CRC-64/NVME folded over the payload.

Implementations

impl StreamingChecksum

pub fn for_algorithm(algorithm: ChecksumAlgorithm) -> Option<Self>

Starts an empty digest for algorithm, or None when this build cannot recompute that algorithm.

pub fn update(&mut self, bytes: &[u8])

Folds the next piece of the payload in, in order.

pub fn finish(self) -> StorageChecksum

Closes the digest over everything fed so far.

Trait Implementations

impl Debug for StreamingChecksum

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

Formats the value using the given formatter.