A super-convoluted way to find my email address.

hash.go

package main

import (
	"crypto/md5"
	"fmt"
	"io"
	"runtime"
)

var chars = "abcdefghijklmnopqrstuvwxyz"
var size = 0

func main() {
	runtime.GOMAXPROCS(runtime.NumCPU())
	size = len(chars)
	allForLength(6)
}

func allForLength(l int) {
	ints := make([]int, l, l)
	work := make(chan string)
	done := make(chan bool)

	for i := 0; i < runtime.NumCPU(); i++ {
		go func() {
			for true {
				s, ok := <-work

				if ok {
					if makeHash(s+"@gmail.com") == "62435c5225aaefe8d66401a546ec48a4" {
						fmt.Println("FOUND IT!!! " + s)
					}
				} else {
					done <- true
					return
				}
			}
		}()
	}

	check := func() {
		s := ""
		p := true

		for i := 0; i < l; i++ {
			// This may slow it down a tad, but otherwise we're lost!
			if i > 0 && ints[i] != 0 {
				p = false
			}

			s += chars[ints[i]:ints[i]+1]
		}

		if p {
			fmt.Println(s)
		}

		work <- s
	}

	check()

	for increment(ints) {
		check()
	}

	close(work)

	for i := 0; i < runtime.NumCPU(); i++ {
		<-done
	}
}

func increment(ints []int) bool {
	for i := len(ints) - 1; i >= 0; i-- {
		if ints[i] < size-1 {
			ints[i]++
			return true
		} else {
			ints[i] = 0
		}
	}
	return false
}

func makeHash(s string) string {
	hasher := md5.New()
	io.WriteString(hasher, s)
	return fmt.Sprintf("%x", hasher.Sum(nil))
}