Struct bitcoin::util::hash::Sha256dHash

pub struct Sha256dHash(_);

A Bitcoin hash, 32-bytes, computed from x as SHA256(SHA256(x))

Methods

impl Sha256dHash

pub fn as_ptr(&self) -> *const u8

Converts the object to a raw pointer

pub fn as_mut_ptr(&mut self) -> *mut u8

Converts the object to a mutable raw pointer

pub fn len(&self) -> usize

Returns the length of the object as an array

pub fn is_empty(&self) -> bool

Returns whether the object, as an array, is empty. Always false.

pub fn as_bytes(&self) -> &[u8; 32]

Returns the underlying bytes.

pub fn to_bytes(&self) -> [u8; 32]

Returns the underlying bytes.

pub fn into_bytes(self) -> [u8; 32]

Returns the underlying bytes.

impl Sha256dHash

pub fn from_data(data: &[u8]) -> Sha256dHash

Create a hash by hashing some data

pub fn into_le(self) -> Uint256

Converts a hash to a little-endian Uint256

pub fn into_be(self) -> Uint256

Converts a hash to a big-endian Uint256

pub fn into_hash32(self) -> Hash32

Converts a hash to a Hash32 by truncation

pub fn into_hash48(self) -> Hash48

Converts a hash to a Hash48 by truncation

pub fn from_hex(s: &str) -> Result<Sha256dHash, HexError>

Decodes a big-endian (i.e. reversed vs sha256sum output) hex string as a Sha256dHash

pub fn into_hash64(self) -> Hash64

Converts a hash to a Hash64 by truncation

pub fn le_hex_string(&self) -> String

Human-readable hex output

pub fn be_hex_string(&self) -> String

Human-readable hex output

Trait Implementations

impl<S: Encoder> Encodable<S> for Sha256dHash

fn consensus_encode(&self, s: &mut S) -> Result<(), Error>

Encode an object with a well-defined format, should only ever error if the underlying Encoder errors.

impl<D: Decoder> Decodable<D> for Sha256dHash

fn consensus_decode(d: &mut D) -> Result<Sha256dHash, Error>

Decode an object with a well-defined format

impl<'a> From<&'a [u8]> for Sha256dHash

fn from(data: &'a [u8]) -> Sha256dHash

Performs the conversion.

impl Eq for Sha256dHash

impl PartialOrd<Sha256dHash> for Sha256dHash

fn partial_cmp(&self, other: &Sha256dHash) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use] fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use] fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use] fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use] fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Sha256dHash

impl Default for Sha256dHash

fn default() -> Sha256dHash

Returns the "default value" for a type.

impl PartialEq<Sha256dHash> for Sha256dHash

fn eq(&self, other: &Sha256dHash) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Clone for Sha256dHash

fn clone(&self) -> Sha256dHash

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for Sha256dHash

fn cmp(&self, other: &Sha256dHash) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl Debug for Sha256dHash

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

Output the raw sha256d hash, not reversing it (unlike Display and what Core does for user display)

impl Display for Sha256dHash

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

Output the sha256d hash in reverse, copying Bitcoin Core's behaviour

impl UpperHex for Sha256dHash

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

Output the sha256d hash in reverse, copying Bitcoin Core's behaviour

impl LowerHex for Sha256dHash

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

Output the sha256d hash in reverse, copying Bitcoin Core's behaviour

impl Hash for Sha256dHash

fn hash<H>(&self, state: &mut H) where     H: Hasher,

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Sha256dHash], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl Index<usize> for Sha256dHash

type Output = u8

The returned type after indexing.

fn index(&self, index: usize) -> &u8

Performs the indexing (container[index]) operation.

impl Index<Range<usize>> for Sha256dHash

type Output = [u8]

The returned type after indexing.

fn index(&self, index: Range<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeTo<usize>> for Sha256dHash

type Output = [u8]

The returned type after indexing.

fn index(&self, index: RangeTo<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeFrom<usize>> for Sha256dHash

type Output = [u8]

The returned type after indexing.

fn index(&self, index: RangeFrom<usize>) -> &[u8]

Performs the indexing (container[index]) operation.

impl Index<RangeFull> for Sha256dHash

type Output = [u8]

The returned type after indexing.

fn index(&self, _: RangeFull) -> &[u8]

Performs the indexing (container[index]) operation.

impl FromStr for Sha256dHash

type Err = HexError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Rand for Sha256dHash

fn rand<R: Rng>(r: &mut R) -> Sha256dHash

Generates a random instance of this type using the specified source of randomness.