Fancy EIP-1014

fancy_eip-1014.md

Address is expected to start with 000000.

running 1 test
test tests::test_alloy has been running for over 60 seconds
Found matching address: 0x0000004b2284982bb9a7482bfb76c721631260fe, for salt: 0x0000000000000000000000000000000000000000000000000000000000f17dfe
test tests::test_alloy ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 1 filtered out; finished in 520.59s

lib.rs

use alloy_core::primitives::{Address, FixedBytes, U256};

fn increment_fixed_bytes(val: &mut FixedBytes<32>) {
    let bytes: &mut [u8] = val.as_mut_slice();

    for byte in bytes.iter_mut().rev() {
        if *byte < 255 {
            *byte += 1;
            break;
        } else {
            *byte = 0;
        }
    }
}

fn find_matching_address(sender: Address, init_code_hash: FixedBytes<32>, pattern: Address, mask: Address) {
    let mut salt: FixedBytes<32> = FixedBytes::from(U256::ZERO);
    loop {
        let address: Address = sender.create2(salt, init_code_hash);

        if address.bit_and(mask).bit_xor(pattern).is_zero() {
            println!("Found matching address: {:?}, for salt: {:?}", address, salt);
            break;
        }
        increment_fixed_bytes(&mut salt);
    }
}