Struct Sha256 

pub struct Sha256 { /* private fields */ }

SHA-256 hasher (FIPS 180-4). 256-bit output, 64-byte blocks.

The workhorse hash of TLS 1.2 / 1.3, JWS, X.509 SHA-2 signatures, Bitcoin, and almost every other modern protocol that needs a 128-bit-security hash function.

Trait Implementations

impl Clone for Sha256

fn clone(&self) -> Sha256

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Hasher for Sha256

const OUTPUT_LEN: usize = 32

Output size in bytes.

const BLOCK_LEN: usize = 64

Block size in bytes (for HMAC computation).

fn new() -> Self

Create a new hasher instance.

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

Feed data into the hasher (can be called multiple times).

fn finalize(self) -> Vec<u8>

Finalize and return the digest. Consumes the hasher.

fn finalize_into(self, out: &mut [u8])

Finalize into a caller-provided buffer (no allocation).

fn hash(data: &[u8]) -> Vec<u8>

where Self: Sized,

One-shot: hash data and return the digest.