snarkvm_algorithms/crypto_hash/
sha256.rs

1// Copyright 2024 Aleo Network Foundation
2// This file is part of the snarkVM library.
3
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at:
7
8// http://www.apache.org/licenses/LICENSE-2.0
9
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15
16use sha2::{Digest, Sha256};
17
18pub fn sha256(data: &[u8]) -> [u8; 32] {
19    let digest = Sha256::digest(data);
20    let mut ret = [0u8; 32];
21    ret.copy_from_slice(&digest);
22    ret
23}
24
25pub fn double_sha256(data: &[u8]) -> [u8; 32] {
26    let digest = Sha256::digest(Sha256::digest(data));
27    let mut ret = [0u8; 32];
28    ret.copy_from_slice(&digest);
29    ret
30}
31
32pub fn sha256d_to_u64(data: &[u8]) -> u64 {
33    let hash_slice = double_sha256(data);
34    let mut hash = [0u8; 8];
35    hash[..].copy_from_slice(&hash_slice[..8]);
36    u64::from_le_bytes(hash)
37}
snarkvm_algorithms/crypto_hash/sha256.rs

snarkvm_algorithms/crypto_hash/
sha256.rs
