ink_ir/ir/
sha3.rs

1// Copyright (C) Use Ink (UK) Ltd.
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//     http://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
15/// Computes the KECCAK 256-bit hash for the given input and stores it in output.
16pub fn keccak_256(input: &[u8], output: &mut [u8; 32]) {
17    use sha3::{
18        digest::generic_array::GenericArray,
19        Digest as _,
20    };
21    let mut hasher = sha3::Keccak256::new();
22    hasher.update(input);
23    hasher.finalize_into(<&mut GenericArray<u8, _>>::from(&mut output[..]));
24}
25
26// /// Computes the BLAKE2b-256 bit hash of a string or byte string literal.
27// ///
28// /// # Note
29// ///
30// /// This is mainly used for analysis and codegen of the `blake2x256!` macro.
31// #[derive(Debug)]
32// pub struct Blake2x256Macro {
33//     hash: [u8; 32],
34//     input: syn::Lit,
35// }
36
37// impl Blake2x256Macro {
38//     /// Returns the underlying selector.
39//     pub fn hash(&self) -> [u8; 32] {
40//         self.hash
41//     }
42//
43//     /// Returns the literal input of the BLAKE-2b hash.
44//     pub fn input(&self) -> &syn::Lit {
45//         &self.input
46//     }
47// }
48//
49// impl TryFrom<TokenStream2> for Blake2x256Macro {
50//     type Error = syn::Error;
51//
52//     fn try_from(input: TokenStream2) -> Result<Self, Self::Error> {
53//         let input_span = input.span();
54//         let lit = syn::parse2::<syn::Lit>(input).map_err(|error| {
55//             format_err!(
56//                 input_span,
57//                 "expected string or byte string literal as input: {}",
58//                 error
59//             )
60//         })?;
61//         let input_bytes = match lit {
62//             syn::Lit::Str(ref lit_str) => lit_str.value().into_bytes(),
63//             syn::Lit::ByteStr(ref byte_str) => byte_str.value(),
64//             invalid => {
65//                 return Err(format_err!(
66//                     invalid.span(),
67//                     "expected string or byte string literal as input. found {:?}",
68//                     invalid,
69//                 ))
70//             }
71//         };
72//         let mut output = [0u8; 32];
73//         blake2b_256(&input_bytes, &mut output);
74//         Ok(Self {
75//             hash: output,
76//             input: lit,
77//         })
78//     }
79// }
ink_ir/ir/sha3.rs

ink_ir/ir/
sha3.rs
