29 lines
763 B
Rust
29 lines
763 B
Rust
use sha2::{Digest, Sha256};
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use std::{convert::TryFrom, fmt};
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const HASH_BYTES: usize = 32;
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#[derive(AbiExample)]
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pub struct Hash(pub [u8; HASH_BYTES]);
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#[derive(Default)]
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pub struct Hasher {
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hasher: Sha256,
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}
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impl Hasher {
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pub fn hash(&mut self, val: &[u8]) {
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self.hasher.input(val);
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}
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pub fn result(self) -> Hash {
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// At the time of this writing, the sha2 library is stuck on an old version
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// of generic_array (0.9.0). Decouple ourselves with a clone to our version.
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Hash(<[u8; HASH_BYTES]>::try_from(self.hasher.result().as_slice()).unwrap())
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}
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}
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impl fmt::Display for Hash {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}", bs58::encode(self.0).into_string())
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}
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}
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