Finding the valid order of a secret message

wallet-signature-bruteforce.go

package main

import (
	"github.com/gitchander/permutation"
	"encoding/hex"
	"crypto/sha1"
	"crypto/hmac"
	"strings"
	"fmt"
	"os"
)

func main() {

	secretKey := "9LXAVCxcITaABNK48pAVgc4muuTNJ4enIKS5YzKyGZ"
	finalHash := "77cc91113efbcea99ea0d5b5450f3d159694d6a2"
	params := []string{"bb0b4a65077f7385", "09XXXXXXXX", "m8J9IpbfSBZY3Kc4AYhUMriZrZa1jqZT5EdJp9LJFcv/OAaZagEAAA==", "123456", "ABCD", "1557465220750", "mobile"}

	byteFinalHash, _ := hex.DecodeString(finalHash)
	prmt := permutation.New(permutation.StringSlice(params))

	fmt.Println("Brute-forcing...")
	for prmt.Next() {
		secretMessage := strings.Join(params[:], "|")
		mac := hmac.New(sha1.New, []byte(secretKey))
		mac.Write([]byte(secretMessage))
		digest := mac.Sum(nil)
		if (hmac.Equal(byteFinalHash, digest)) {
			fmt.Printf("\nFound a message pattern: %s\nKey: %s\nHash: %s\n", secretMessage, secretKey, hex.EncodeToString(byteFinalHash))
			os.Exit(0)
		}
	}
	fmt.Println("Sorry, no pattern found")

}