Struct ContentHasher 

pub struct ContentHasher { /* private fields */ }

Incremental content hasher producing a stable lowercase-hex digest.

Backed by BLAKE3. Feed bytes with update (raw) or update_framed (domain-separated), then read the digest with finalize_hex. The hasher may be reused after finalizing; finalizing does not consume it.

Implementations

impl ContentHasher

pub fn new() -> Self

Create an empty hasher.

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

Fold bytes into the digest verbatim, without framing.

Returns &mut Self so updates can be chained.

pub fn update_framed(&mut self, label: &[u8], value: &[u8]) -> &mut Self

Fold a labelled value into the digest with unambiguous framing.

Each of label and value is folded length-prefixed (its length as a little-endian u64, then its bytes), so field boundaries stay unambiguous even when the inputs contain arbitrary bytes such as : or \0. Independently folded fields therefore cannot alias one another. Returns &mut Self so updates can be chained.

pub fn finalize_hex(&self) -> String

Render the current digest as a lowercase hexadecimal string.

Does not consume the hasher: further updates may follow and produce a new digest.

Trait Implementations

impl Clone for ContentHasher

fn clone(&self) -> ContentHasher

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ContentHasher

fn default() -> ContentHasher

Returns the “default value” for a type.