MD5Lib = require("hash-wasm@4.9.0/dist/md5.umd.min.js")
async function findPassword(doorId) {
let [i, pwd] = [0, ""];
while (pwd.length < 8) {
const hash = await MD5Lib.md5(doorId + i++);
if (hash.startsWith("00000")) {
pwd += hash[5];
}
}
return pwd;
}
part1 = "Uncomment findPassword line for answer (takes c. 8 seconds)" //findPassword(puzzleInput)
async function findPassword2(doorId) {
let [i, foundChrs] = [0, 0];
const pwd = Array(8).fill(null);
while (foundChrs < 8) {
const hash = await MD5Lib.md5(doorId + i++);
if (hash.startsWith("00000")) {
const position = parseInt(hash[5], 16);
if (position < 8 && pwd[position] === null) {
pwd[position] = hash[6];
foundChrs++;
}
}
}
return pwd.join("");
}
part2 = "Uncomment findPassword2 line for answer (takes c. 25 seconds)" //findPassword2(puzzleInput)
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