Struct Sha256 

pub struct Sha256;

SHA-256 hash function (32-byte output, FIPS 180-4 §6.2).

Implementations

impl Sha256

pub const DIGEST_LEN: usize = 32

Byte length of the SHA-256 digest output.

pub const OUTPUT_LEN: usize = 32

Output length in bytes (alias for DIGEST_LEN; use for generic const contexts).

pub const BLOCK_SIZE: usize = 64

SHA-256 block size in bytes (FIPS 180-4).

impl Sha256

pub fn hash_fixed(&self, msg: &[u8]) -> [u8; 32]

Hash msg and return the 32-byte SHA-256 digest as a fixed-size array.

Alloc-free alternative to Hash::hash_to_vec.

no_std note

When the no_std feature is enabled, prefer this method over hash_to_vec, which requires heap allocation.

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 Copy for Sha256

impl Debug for Sha256

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

Formats the value using the given formatter.

impl Default for Sha256

fn default() -> Sha256

Returns the “default value” for a type.

impl Hash for Sha256

fn name(&self) -> &'static str

Human-readable algorithm identifier (e.g. "SHA-256").

fn output_len(&self) -> usize

Byte length of the digest output.

fn hash(&self, msg: &[u8], out: &mut [u8]) -> Result<(), CryptoError>

Hash msg and write the digest into out.

fn hash_to_vec(&self, msg: &[u8]) -> Result<Vec<u8>, CryptoError>

Convenience: hash msg and return the digest as a Vec<u8>.

fn hash_to_array<const N: usize>( &self, msg: &[u8], ) -> Result<[u8; N], CryptoError>

where Self: Sized,

Convenience: hash msg and return the digest as a fixed-size array.