Create encrypted versions of passwords in go

password.go

// build: go build password.go
// run: ./password -password='clear text'
// use HISTCONTROL=ignoreboth and indent commands with one space to avoid
// saving passwords in your shell history.

package main

import (
  "os"
  "fmt"
  "flag"
  "golang.org/x/crypto/bcrypt"
)

func main() {
  password := flag.String("password", "", "a password in clear text")

  flag.Parse()

  encrypted_password, err := EncryptPassword(*password)
  if err != nil {
    fmt.Println("error: ", err)
  }
  fmt.Println("clear: ", *password)
  fmt.Println("crypt: ", encrypted_password)
  os.Exit(0)
}

func EncryptPassword(password string) (string, error) {
  hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), 10)
  if err != nil {
    return "", err
  }
  return string(hashedPassword), nil
}