Trait ipfs_embed_core::MultihashCode

pub trait MultihashCode: 'static + Eq + Into<u64> + TryFrom<u64> + Send + Copy + Sync + Unpin + Debug {
    type AllocSize: Size;
    pub fn digest(&self, input: &[u8]) -> Multihash<Self::AllocSize>;
    pub fn multihash_from_digest<'a, S, D>(
        digest: &'a D
    ) -> Multihash<Self::AllocSize>
    where
        D: Digest<S>,
        S: Size,
        Self: From<&'a D>;
}

Trait that implements hashing.

It is usually implemented by a custom code table enum that derives the Multihash derive.

Associated Types

type AllocSize: Size

The maximum size a hash will allocate.

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Required methods

pub fn digest(&self, input: &[u8]) -> Multihash<Self::AllocSize>

Calculate the hash of some input data.

Example

// `Code` implements `MultihashCode`
use tiny_multihash::{Code, MultihashCode};

let hash = Code::Sha3_256.digest(b"Hello world!");
println!("{:02x?}", hash);

pub fn multihash_from_digest<'a, S, D>(
    digest: &'a D
) -> Multihash<Self::AllocSize> where
    D: Digest<S>,
    S: Size,
    Self: From<&'a D>, 

Create a multihash from an existing [Digest].

Example

use tiny_multihash::{Code, MultihashCode, Sha3_256, StatefulHasher};

let mut hasher = Sha3_256::default();
hasher.update(b"Hello world!");
let hash = Code::multihash_from_digest(&hasher.finalize());
println!("{:02x?}", hash);

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Implementations on Foreign Types

impl MultihashCode for Code

type AllocSize = UInt<UInt<UInt<UInt<UInt<UInt<UInt<UTerm, B1>, B0>, B0>, B0>, B0>, B0>, B0>

pub fn digest(
    &self,
    input: &[u8]
) -> Multihash<<Code as MultihashCode>::AllocSize>

pub fn multihash_from_digest<'a, S, D>(
    digest: &'a D
) -> Multihash<<Code as MultihashCode>::AllocSize> where
    D: Digest<S>,
    S: Size,
    Code: From<&'a D>, 

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Implementors

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