7c335e8764
* misc: bump license header to 2019 * misc: remove_duplicate_empty_lines.sh * misc: run license header script * commit cargo lock
88 lines
2.6 KiB
Rust
88 lines
2.6 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity Ethereum.
|
|
|
|
// Parity Ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// Parity Ethereum is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Generates Keccak-flavoured trie roots.
|
|
|
|
extern crate ethereum_types;
|
|
extern crate keccak_hasher;
|
|
extern crate triehash;
|
|
|
|
use ethereum_types::H256;
|
|
use keccak_hasher::KeccakHasher;
|
|
|
|
/// Generates a trie root hash for a vector of key-value tuples
|
|
pub fn trie_root<I, K, V>(input: I) -> H256
|
|
where
|
|
I: IntoIterator<Item = (K, V)>,
|
|
K: AsRef<[u8]> + Ord,
|
|
V: AsRef<[u8]>,
|
|
{
|
|
triehash::trie_root::<KeccakHasher, _, _, _>(input)
|
|
}
|
|
|
|
/// Generates a key-hashed (secure) trie root hash for a vector of key-value tuples.
|
|
pub fn sec_trie_root<I, K, V>(input: I) -> H256
|
|
where
|
|
I: IntoIterator<Item = (K, V)>,
|
|
K: AsRef<[u8]>,
|
|
V: AsRef<[u8]>,
|
|
{
|
|
triehash::sec_trie_root::<KeccakHasher, _, _, _>(input)
|
|
}
|
|
|
|
/// Generates a trie root hash for a vector of values
|
|
pub fn ordered_trie_root<I, V>(input: I) -> H256
|
|
where
|
|
I: IntoIterator<Item = V>,
|
|
V: AsRef<[u8]>,
|
|
{
|
|
triehash::ordered_trie_root::<KeccakHasher, I>(input)
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::{trie_root, sec_trie_root, ordered_trie_root};
|
|
use triehash;
|
|
use keccak_hasher::KeccakHasher;
|
|
|
|
#[test]
|
|
fn simple_test() {
|
|
assert_eq!(trie_root(vec![
|
|
(b"A", b"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" as &[u8])
|
|
]), "d23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab".into());
|
|
}
|
|
|
|
#[test]
|
|
fn proxy_works() {
|
|
let input = vec![(b"A", b"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" as &[u8])];
|
|
assert_eq!(
|
|
trie_root(input.clone()),
|
|
triehash::trie_root::<KeccakHasher, _, _, _>(input.clone())
|
|
);
|
|
|
|
assert_eq!(
|
|
sec_trie_root(input.clone()),
|
|
triehash::sec_trie_root::<KeccakHasher, _, _, _>(input.clone())
|
|
);
|
|
|
|
let data = &["cake", "pie", "candy"];
|
|
assert_eq!(
|
|
ordered_trie_root(data),
|
|
triehash::ordered_trie_root::<KeccakHasher, _>(data)
|
|
);
|
|
}
|
|
}
|