Struct crypto_hash::Hasher

pub struct Hasher(_);

Generator of digests using a cryptographic hash function.

Examples

use crypto_hash::{Algorithm, Hasher};
use std::io::Write;

let mut hasher = Hasher::new(Algorithm::SHA256);
hasher.write_all(b"crypto");
hasher.write_all(b"-");
hasher.write_all(b"hash");
let result = hasher.finish();
let expected =
    b"\xfd\x1a\xfb`\"\xcdMG\xc8\x90\x96\x1cS9(\xea\xcf\xe8!\x9f\x1b%$\xf7\xfb*a\x84}\xdf\x8c'"
    .to_vec();
assert_eq!(expected, result)

Methods

impl Hasher

Important traits for Hasher

impl Write for Hasher

pub fn new(algorithm: Algorithm) -> Hasher

Create a new Hasher for the given Algorithm.

pub fn finish(&mut self) -> Vec<u8>

Generate a digest from the data written to the Hasher.

Trait Implementations

impl Write for Hasher

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Write.