1 // Copyright 2023 The BoringSSL Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 use alloc::vec::Vec;
15
16 #[allow(clippy::expect_used, clippy::unwrap_used, clippy::indexing_slicing)]
decode_hex<const N: usize>(s: &str) -> [u8; N]17 pub(crate) fn decode_hex<const N: usize>(s: &str) -> [u8; N] {
18 (0..s.len())
19 .step_by(2)
20 .map(|i| u8::from_str_radix(&s[i..i + 2], 16).expect("Invalid hex string"))
21 .collect::<Vec<u8>>()
22 .as_slice()
23 .try_into()
24 .unwrap()
25 }
26
27 #[allow(clippy::expect_used, clippy::unwrap_used, clippy::indexing_slicing)]
decode_hex_into_vec(s: &str) -> Vec<u8>28 pub(crate) fn decode_hex_into_vec(s: &str) -> Vec<u8> {
29 (0..s.len())
30 .step_by(2)
31 .map(|i| u8::from_str_radix(&s[i..i + 2], 16).expect("Invalid hex string"))
32 .collect::<Vec<u8>>()
33 }
34