.. | ||
src | ||
tests | ||
Cargo.toml | ||
README.md |
Tree hashing
Provides both cached and non-cached tree hashing methods.
Standard Tree Hash
use tree_hash_derive::TreeHash;
#[derive(TreeHash)]
struct Foo {
a: u64,
b: Vec<u64>,
}
fn main() {
let foo = Foo {
a: 42,
b: vec![1, 2, 3]
}
println!("root: {}", foo.tree_hash_root());
}
Cached Tree Hash
use tree_hash_derive::{TreeHash, CachedTreeHash};
#[derive(TreeHash, CachedTreeHash)]
struct Foo {
a: u64,
b: Vec<u64>,
}
#[derive(TreeHash, CachedTreeHash)]
struct Bar {
a: Vec<Foo>,
b: u64,
}
fn main() {
let bar = Bar {
a: vec![
Foo {
a: 42,
b: vec![1, 2, 3]
}
],
b: 42
};
let modified_bar = Bar {
a: vec![
Foo {
a: 100,
b: vec![1, 2, 3, 4, 5, 6]
}
Foo {
a: 42,
b: vec![]
}
],
b: 99
};
let mut hasher = CachedTreeHasher::new(&bar).unwrap();
hasher.update(&modified_bar);
// Assert that the cached tree hash matches a standard tree hash.
assert_eq!(hasher.tree_hash_root(), modified_bar.tree_hash_root());
}