accumulate_client/runtime/
hashing.rs

1use sha2::{Digest, Sha256};
2
3/// Compute SHA-256 hash of input data
4pub fn sha256(data: &[u8]) -> [u8; 32] {
5    let mut hasher = Sha256::new();
6    hasher.update(data);
7    let out = hasher.finalize();
8    let mut arr = [0u8; 32];
9    arr.copy_from_slice(&out);
10    arr
11}
12
13/// Compute SHA-256 hash and return as hex string
14pub fn sha256_hex(data: &[u8]) -> String {
15    hex::encode(sha256(data))
16}
17
18#[cfg(test)]
19mod tests {
20    use super::*;
21
22    #[test]
23    fn test_sha256_basic() {
24        let input = b"hello world";
25        let expected = "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9";
26        assert_eq!(sha256_hex(input), expected);
27    }
28
29    #[test]
30    fn test_sha256_empty() {
31        let input = b"";
32        let expected = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
33        assert_eq!(sha256_hex(input), expected);
34    }
35
36    #[test]
37    fn test_sha256_deterministic() {
38        let input = b"test deterministic";
39        let hash1 = sha256(input);
40        let hash2 = sha256(input);
41        assert_eq!(hash1, hash2, "Hash should be deterministic");
42    }
43}
accumulate_client/runtime/hashing.rs

accumulate_client/runtime/
hashing.rs
