Trait Hash

pub trait Hash:
    Copy
    + Clone
    + PartialEq
    + Eq
    + PartialOrd
    + Ord
    + Hash
    + Debug
    + Display
    + LowerHex
    + AsRef<[u8]> {
    type Bytes: FromHex + Copy + IsByteArray;

    const LEN: usize = <Self::Bytes>::LEN;
    const DISPLAY_BACKWARD: bool = false;

    // Required methods
    fn from_byte_array(bytes: Self::Bytes) -> Self;
    fn from_slice(sl: &[u8]) -> Result<Self, FromSliceError>;
    fn to_byte_array(self) -> Self::Bytes;
    fn as_byte_array(&self) -> &Self::Bytes;
}

Trait which applies to hashes of all types.

Provided Associated Constants

const LEN: usize = <Self::Bytes>::LEN

Length of the hash, in bytes.

const DISPLAY_BACKWARD: bool = false

Flag indicating whether user-visible serializations of this hash should be backward.

For some reason Satoshi decided this should be true for Sha256dHash, so here we are.

Required Associated Types

type Bytes: FromHex + Copy + IsByteArray

The byte array that represents the hash internally.

Required Methods

fn from_byte_array(bytes: Self::Bytes) -> Self

Constructs a hash from the underlying byte array.

fn from_slice(sl: &[u8]) -> Result<Self, FromSliceError>

👎Deprecated since 0.15.0: use from_byte_array instead

Copies a byte slice into a hash object.

fn to_byte_array(self) -> Self::Bytes

Returns the underlying byte array.

fn as_byte_array(&self) -> &Self::Bytes

Returns a reference to the underlying byte array.

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 Hash for bitcoin_hashes::Hash160

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 20]

impl Hash for bitcoin_hashes::Ripemd160

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 20]

impl Hash for bitcoin_hashes::Sha1

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 20]

impl Hash for bitcoin_hashes::Sha256

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 32]

impl Hash for bitcoin_hashes::Sha256d

const DISPLAY_BACKWARD: bool = true

type Bytes = [u8; 32]

impl Hash for bitcoin_hashes::Sha384

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 48]

impl Hash for bitcoin_hashes::Sha512

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 64]

impl Hash for bitcoin_hashes::Sha512_256

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 32]

impl Hash for bitcoin_hashes::Siphash24

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 8]

impl<T: Tag> Hash for bitcoin_hashes::sha256t::Hash<T>

const DISPLAY_BACKWARD: bool = false

type Bytes = [u8; 32]

impl<T: GeneralHash> Hash for Hmac<T>

type Bytes = <T as Hash>::Bytes