nam_sparse_merkle_tree/
sha256.rs

1use crate::{traits::Hasher, H256};
2use core::convert::TryInto;
3use sha2::{Digest, Sha256};
4
5#[derive(Default)]
6pub struct Sha256Hasher(Sha256);
7
8impl Hasher for Sha256Hasher {
9    fn write_bytes(&mut self, h: &[u8]) {
10        self.0.update(h);
11    }
12
13    fn finish(self) -> H256 {
14        let hash = self.0.finalize();
15        let bytes: [u8; 32] = hash
16            .as_slice()
17            .try_into()
18            .expect("Sha256 output conversion to fixed array shouldn't fail");
19        bytes.into()
20    }
21
22    fn hash_op() -> ics23::HashOp {
23        ics23::HashOp::Sha256
24    }
25}

nam_sparse_merkle_tree/sha256.rs

nam_sparse_merkle_tree/
sha256.rs