Struct ContentHasher 

pub struct ContentHasher { /* private fields */ }

Constant-space v1 content hashing with an exact, checked payload length.

The length precedes the payload in the immutable v1 framing. Callers must measure and stream the same immutable input. Excess input poisons the hasher; neither incomplete nor poisoned input can produce a digest.

Implementations

impl ContentHasher

pub fn new(domain: HashDomain, payload_length: u64) -> Self

Starts an exact-length, domain-separated SHA-256 v1 frame.

pub fn update(&mut self, payload: &[u8]) -> Result<(), HashLengthMismatch>

Adds bytes without buffering them, refusing and poisoning excess input.

pub fn finish(self) -> Result<ContentDigest, HashLengthMismatch>

Finishes only after exactly the declared number of bytes was supplied.

Trait Implementations

impl Debug for ContentHasher

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

Formats the value using the given formatter.