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bruteForceHash.js
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bruteForceHash.js
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const { ethers } = require("hardhat");
const { BigNumber } = require("ethers");
const targetHash = "0x16f21ac3";
function bruteForceHash() {
let found = false;
let attempts = 0;
const uint32Max = BigNumber.from(2).pow(32).sub(1);
// Loop from 0 to uint32Max
for (let i = 0; i <= uint32Max.toNumber(); i++) {
const hashedNumber = ethers.utils.keccak256(ethers.utils.defaultAbiCoder.encode(["uint256"], [i]))
.substring(0, 10);
if (hashedNumber === targetHash) {
console.log("Found a match!");
console.log("Random Number:", i);
console.log("Hash:", hashedNumber);
found = true;
break;
}
attempts++;
if (attempts % 100000 === 0) {
console.log("Attempts:", attempts);
}
}
}
bruteForceHash();
async function getHash() {
const number = 346;
const hashedNumber = ethers.utils.keccak256(ethers.utils.defaultAbiCoder.encode(["uint256"], [number]));
const firstFourBytes = hashedNumber.substring(0, 10);
console.log(firstFourBytes); // 0x16f21ac3
}
// getHash();