#Google Authenticator Golang package
This Golang package can be used to interact with the Google Authenticator mobile app for 2-factor-authentication.
This package can generate secrets, generate codes and validate codes the secret.
For a secret installation you have to make sure that used codes cannot be reused (replay-attack).
#Usage:
> package main
>
> import (
> "flag"
> "fmt"
> "googleAuthenticator"
> )
>
> func createSecret(ga *googleAuthenticator.GAuth) string {
> secret, err := ga.CreateSecret(16)
> if err != nil {
> return ""
> }
> return secret
> }
>
> func getCode(ga *googleAuthenticator.GAuth, secret string) string {
> code, err := ga.GetCode(secret)
> if err != nil {
> return "*"
> }
> return code
> }
>
> func verifyCode(ga *googleAuthenticator.GAuth, secret, code string) bool {
> // 1:30sec
> ret, err := ga.VerifyCode(secret, code, 1)
> if err != nil {
> return false
> }
> return ret
> }
>
> func main() {
> flag.Parse()
> secret := flag.Arg(0)
> ga := googleAuthenticator.NewGAuth()
> fmt.Print(getCode(ga, secret))
> }
