Struct orion::hazardous::hash::blake2::blake2b::Blake2b

pub struct Blake2b { /* private fields */ }

BLAKE2b streaming state.

Implementations

impl Blake2b

pub fn new(size: usize) -> Result<Self, UnknownCryptoError>

Initialize a Blake2b struct with a given size (in bytes).

pub fn reset(&mut self) -> Result<(), UnknownCryptoError>

Reset to new() state.

pub fn update(&mut self, data: &[u8]) -> Result<(), UnknownCryptoError>

Update state with data. This can be called multiple times.

pub fn finalize(&mut self) -> Result<Digest, UnknownCryptoError>

Return a BLAKE2b digest.

Trait Implementations

impl Clone for Blake2b

fn clone(&self) -> Blake2b

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Blake2b

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

Formats the value using the given formatter.

impl Write for Blake2b

Available on crate feature safe_api only.

Example: custom digest size.

use orion::{
    hazardous::hash::blake2::blake2b::{Blake2b, Digest},
    errors::UnknownCryptoError,
};
use std::io::{self, Read, Write};

// `reader` could also be a `File::open(...)?`.
let mut reader = io::Cursor::new(b"some data");
let mut hasher = Blake2b::new(64)?; // 512-bit hash
std::io::copy(&mut reader, &mut hasher)?;

let digest: Digest = hasher.finalize()?;

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

Update the hasher’s internal state with all of the bytes given. If this function returns the Ok variant, it’s guaranteed that it will contain the length of the buffer passed to Write. Note that this function is just a small wrapper over Blake2b::update.

Errors:

This function will only ever return the std::io::ErrorKind::Other variant when it returns an error. Additionally, this will always contain Orion’s UnknownCryptoError type.

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

This type doesn’t buffer writes, so flushing is a no-op.

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

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

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

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

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers 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 Selfwhere Self: Sized,

Creates a “by reference” adapter for this instance of Write.