snarkvm_synthesizer_program/
to_checksum.rs

1// Copyright (c) 2019-2026 Provable Inc.
2// This file is part of the snarkVM library.
3
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at:
7
8// http://www.apache.org/licenses/LICENSE-2.0
9
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15
16use super::*;
17
18/// Returns the 32-byte SHA3-256 checksum of the given source code in string format.
19pub(crate) fn source_code_checksum<N: Network>(source: &str) -> [U8<N>; 32] {
20    let mut keccak = TinySha3::v256();
21    keccak.update(source.as_bytes());
22
23    let mut hash = [0u8; 32];
24    keccak.finalize(&mut hash);
25    hash.map(U8::new)
26}
27
28impl<N: Network> ProgramCore<N> {
29    /// Returns the checksum of the program.
30    ///
31    /// The checksum is a 32-byte hash of the program's source code in string format.
32    /// This ensures a strict definition of program equivalence, useful for program upgradability.
33    pub fn to_checksum(&self) -> [U8<N>; 32] {
34        source_code_checksum(&self.to_string())
35    }
36}
snarkvm_synthesizer_program/to_checksum.rs

snarkvm_synthesizer_program/
to_checksum.rs
