cloudillo_types/
hasher.rs

1// SPDX-FileCopyrightText: Szilárd Hajba
2// SPDX-License-Identifier: LGPL-3.0-or-later
3
4//! Hasher format for content-addressing. Capable of handling multiple versions and object variants.
5
6use base64::Engine;
7use sha2::{Digest, Sha256};
8
9pub enum Hasher {
10	V1(Sha256),
11}
12
13impl Default for Hasher {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl Hasher {
20	pub fn new() -> Self {
21		Self::V1(Sha256::new())
22	}
23
24	pub fn new_v1() -> Self {
25		Self::V1(Sha256::new())
26	}
27
28	pub fn update(&mut self, data: &[u8]) {
29		match self {
30			Self::V1(hasher) => hasher.update(data),
31		}
32	}
33
34	pub fn finalize(self, prefix: &str) -> String {
35		match self {
36			//Self::V2(hasher) => "2.".to_string() + &base64::engine::general_purpose::URL_SAFE_NO_PAD.encode(hasher.finalize())
37			Self::V1(hasher) => {
38				prefix.to_string()
39					+ "1~" + &base64::engine::general_purpose::URL_SAFE_NO_PAD.encode(hasher.finalize())
40			}
41		}
42	}
43}
44
45pub fn hash_v1(prefix: &str, data: &[u8]) -> Box<str> {
46	let mut hasher = Hasher::new();
47	hasher.update(data);
48	let result = hasher.finalize(prefix);
49
50	result.into()
51}
52
53pub fn hash(prefix: &str, data: &[u8]) -> Box<str> {
54	hash_v1(prefix, data)
55}
56
57// vim: ts=4
cloudillo_types/hasher.rs

cloudillo_types/
hasher.rs
