Trait Hasher 

pub trait Hasher {
    const OUTPUT_LEN: usize;
    const BLOCK_LEN: usize;

    // Required methods
    fn new() -> Self;
    fn update(&mut self, data: &[u8]);
    fn finalize(self) -> Vec<u8> ;
    fn finalize_into(self, out: &mut [u8]);

    // Provided method
    fn hash(data: &[u8]) -> Vec<u8> 
       where Self: Sized { ... }
}

Trait for hash functions (fixed-output).

Required Associated Constants

const OUTPUT_LEN: usize

Output size in bytes.

const BLOCK_LEN: usize

Block size in bytes (for HMAC computation).

Required Methods

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).

Provided Methods

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

where Self: Sized,

One-shot: hash data and return the digest.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl Hasher for Blake2b

const OUTPUT_LEN: usize = 64

const BLOCK_LEN: usize = 128

impl Hasher for Blake2s

const OUTPUT_LEN: usize = 32

const BLOCK_LEN: usize = 64

impl Hasher for Ripemd160

const OUTPUT_LEN: usize = 20

const BLOCK_LEN: usize = 64

impl Hasher for Sha1

const OUTPUT_LEN: usize = 20

const BLOCK_LEN: usize = 64

impl Hasher for Sha3_224

const OUTPUT_LEN: usize = 28

const BLOCK_LEN: usize = 144

impl Hasher for Sha3_256

const OUTPUT_LEN: usize = 32

const BLOCK_LEN: usize = 136

impl Hasher for Sha3_384

const OUTPUT_LEN: usize = 48

const BLOCK_LEN: usize = 104

impl Hasher for Sha3_512

const OUTPUT_LEN: usize = 64

const BLOCK_LEN: usize = 72

impl Hasher for Sha224

const OUTPUT_LEN: usize = 28

const BLOCK_LEN: usize = 64

impl Hasher for Sha256

const OUTPUT_LEN: usize = 32

const BLOCK_LEN: usize = 64

impl Hasher for Sha384

const OUTPUT_LEN: usize = 48

const BLOCK_LEN: usize = 128

impl Hasher for Sha512

const OUTPUT_LEN: usize = 64

const BLOCK_LEN: usize = 128

impl Hasher for Sha512_224

const OUTPUT_LEN: usize = 28

const BLOCK_LEN: usize = 128

impl Hasher for Sha512_256

const OUTPUT_LEN: usize = 32

const BLOCK_LEN: usize = 128