commitment scheme

commitmentscheme.rs

use std::{error::Error, hash::{DefaultHasher, Hash, Hasher}};
trait Auction {
    fn commit(a: u8, b: u8) -> Result<Vec<u8>, Box<dyn Error>>;
    fn open(input: u8, commitment: Vec<u8>) -> Result<bool, Box<dyn Error>>;
}

struct Auctioning {}

impl Auctioning {
    fn to_hash(value: u8) -> Vec<u8> {
        let mut hashing = DefaultHasher::new();
        value.hash(&mut hashing);
        let hashed = hashing.finish();
        hashed.to_ne_bytes().to_vec()

    }
}

impl Auction for Auctioning {
    fn commit(a: u8, b: u8) -> Result<Vec<u8>, Box<dyn Error>> {
        let value = a^b;
        let commitment = Auctioning::to_hash(value);
        println!("Commitment Successful");
        Ok(commitment)
    }

    fn open(input: u8, commitment: Vec<u8>) -> Result<bool, Box<dyn Error>> {
        let check_commit = Auctioning::to_hash(input);
        if check_commit == commitment {
            println!("Commit Verification Valid");
            Ok(true)
        } else {
            println!("Commit Verification Invalid");
            Ok(false)
        }
    }

}

fn main() {
    let v1 = 3u8;
    let v2 = 5u8;
    let v3 = v1 ^ v2;
    let commit = Auctioning::commit(v1, v2);
    let _ = Auctioning::open(v3, commit.expect("msg"));
    println!("Hello, world!");
}