Alechash (md5 cracker)

alechash.js

const readline = require('readline')
const crypto = require("crypto")
//require('draftlog').into(console)

//config
const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
const maxLength = 10;

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

let found = false

const inputIsPassword = process.argv.includes("-p")

let hash
let updateDraftlog
let start
rl.question(inputIsPassword ? "Password:\n" : "Hash:\n", answer => {

    rl.close()

    if (inputIsPassword) {
        hash = md5(answer)
    }
    else hash = answer
    
    updateDraftlog = console.draft("")

    start = new Date()

    while (!found) cycle()

});

const indeces = [0];

function cycle() {
    if (indeces.length > maxLength)
        return

    let string = ""
    for (let i = 0; i < indeces.length; i++) {
        string += chars[indeces[i]]
    }

    
    const hashedString = md5(string)

    //updateDraftlog(hashedString)

    if (hashedString == hash)
        return finish(string)

    let lastElementIndex = indeces.length - 1;

    increase(lastElementIndex);

    function increase (index) {

        //Room to increase
        if (indeces[index] < chars.length - 1)
            indeces[index]++;
        
        //No room to increase, increase element before last
        else {

            //overflow it
            indeces[index] = 0;

            //Already at start, add new character
            if (index == 0)
                indeces.unshift(0);
            
            //Otherwise increase character before index
            else increase(index-1)
        }

    }	
}

function finish(pass) {
    console.log(`Found ${pass} after ${((new Date() - start)/1000).toFixed(2)}s`)
    found = true
}

function md5(input) {
    return crypto.createHash('md5').update(input).digest("hex")
}