Struct Sha256

pub struct Sha256 {}

Sha256 implementation of the Hasher trait.

Examples

 let tree = MerkleTree::<Sha256>::new();
 let other_tree: MerkleTree<Sha256> = MerkleTree::new();

let proof_bytes: Vec<u8> = vec![
    46, 125, 44, 3, 169, 80, 122, 226, 101, 236, 245, 181, 53, 104, 133, 165, 51, 147, 162,
    2, 157, 36, 19, 148, 153, 114, 101, 161, 162, 90, 239, 198, 37, 47, 16, 200, 54, 16,
    235, 202, 26, 5, 156, 11, 174, 130, 85, 235, 162, 249, 91, 228, 209, 215, 188, 250,
    137, 215, 36, 138, 130, 217, 241, 17, 229, 160, 31, 238, 20, 224, 237, 92, 72, 113, 79,
    34, 24, 15, 37, 173, 131, 101, 181, 63, 151, 121, 247, 157, 196, 163, 215, 233, 57, 99,
    249, 74,
];

let proof_result = MerkleProof::<Sha256>::from_bytes(&proof_bytes);

Trait Implementations

impl Clone for Sha256Algorithm

fn clone(&self) -> Sha256Algorithm

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Hasher for Sha256Algorithm

type Hash = [u8; 32]

This type is used as a hash type in the library. It is recommended to use fixed size u8 array as a hash type. For example, for sha256 the type would be [u8; 32], representing 32 bytes, which is the size of the sha256 digest. Also, fixed sized arrays of u8 by default satisfy all trait bounds required by this type.

fn hash(data: &[u8]) -> [u8; 32]

This associated function takes a slice of bytes and returns a hash of it. Used by concat_and_hash function to build a tree from concatenated hashes

fn concat_and_hash(left: &Self::Hash, right: Option<&Self::Hash>) -> Self::Hash

Used by MerkleTree and PartialTree when calculating the root. The provided default implementation propagates the left node if it doesn’t have a sibling. The left node should always be present. The right node is optional.

fn hash_size() -> usize

Returns the byte size of Self::Hash. Default implementation returns mem::size_of::<Self::Hash>(). Usually doesn’t need to be overridden. Used internally by MerkleProof to parse hashes from a serialized proof.