hash
Generic hashing support.This module provides a hash state abstraction that can be updated with values and finalized to produce a hash. This allows for flexible and efficient hashing of any type with different hash functions.The simplest way to make a type hashable is to use #[derive(Hash)]. Hashing a value is done by initiating a HashState corresponding to a hash function, updating it with the value, and then finalizing it to get the hash result. # ExamplesBasic usage with Pedersen and Poseidon hash:
use core::pedersen::PedersenTrait;
use core::poseidon::PoseidonTrait;
[derive(Copy, Drop, Hash)]
struct Person {
id: u32,
phone: u64,
}
fn main() {
let person1 = Person { id: 1, phone: 555_666_7777 };
let person2 = Person { id: 2, phone: 555_666_7778 };
assert!(
PedersenTrait::new(0)
.update_with(person1)
.finalize() != PedersenTrait::new(0)
.update_with(person2)
.finalize(),
);
assert!(
PoseidonTrait::new()
.update_with(person1)
.finalize() != PoseidonTrait::new()
.update_with(person2)
.finalize(),
);
}
Fully qualified path: core::hash