Struct HashEngine 

pub struct HashEngine { /* private fields */ }

Engine to compute SHA256 hash function.

Implementations

impl HashEngine

pub const fn new() -> Self

Constructs a new SHA256 hash engine.

pub fn from_midstate(midstate: Midstate) -> HashEngine

Constructs a new HashEngine from a Midstate.

Please see docs on Midstate before using this function.

pub const fn can_extract_midstate(&self) -> bool

Returns true if the midstate can be extracted from this engine.

The midstate can only be extracted if the number of bytes input into the hash engine is a multiple of 64. See caveat on Self::midstate.

Please see docs on Midstate before using this function.

pub fn midstate(&self) -> Result<Midstate, MidstateError>

Outputs the midstate of the hash engine.

Please see docs on Midstate before using this function.

Trait Implementations

impl Clone for HashEngine

fn clone(&self) -> HashEngine

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for HashEngine

fn default() -> Self

Returns the “default value” for a type.

impl HashEngine for HashEngine

const BLOCK_SIZE: usize = 64usize

Length of the hash’s internal block size, in bytes.

fn n_bytes_hashed(&self) -> u64

Return the number of bytes already input into the engine.

fn input(&mut self, inp: &[u8])

Add data to the hash engine.

impl Write for HashEngine

Available on crate feature bitcoin-io only.

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

Writes buf into this writer, returning how many bytes were written.

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

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

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

Attempts to write an entire buffer into this writer.

impl Write for HashEngine

Available on crate feature std only.

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

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

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

Flushes 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 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, args: Arguments<'_>) -> Result<(), Error>

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

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

where Self: Sized,

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