How to Hide Password Input from Terminal in Ruby Script

How to hide password input from terminal in ruby script

Best method from @eclectic923's answer:

require 'io/console'
password = STDIN.noecho(&:gets).chomp

For 1.9.3 (and above), this requires you adding require 'io/console' to your code.

Original Answer:

Ruby "Password" is another alternative.

Hide user input in Ruby

Assuming you are using at least ruby 1.9, you can use the noecho method on IO: http://www.ruby-doc.org/stdlib-2.0/libdoc/io/console/rdoc/IO.html#method-i-noecho

So:

require 'io/console'
print "Password: "
STDIN.noecho(&:gets).chomp

This will not obfuscate the characters, but will simply leave the input terminal blank.

Ruby how to mask user input using a specific character?

You need this gem: highline. And your code might be like this:

require 'highline/import'

def ask_user_password
  puts 'Enter your password'
  ask("> ") { |q| q.echo =  '*' }
end

If you dont want to echo anything, just change the echo to false.

How can I read a password from the command line in Ruby?

To answer my own question, and for the benefit of anyone else who would like to know, there is a Ruby gem called HighLine that you need.

require 'rubygems'
require 'highline/import'

def get_password(prompt="Enter Password")
   ask(prompt) {|q| q.echo = false}
end

thePassword = get_password()

how to show dummy character while typing in terminal in ruby?

There is a gem called highline can do this:

require 'highline'

cli = HighLine.new
cli.ask('password:') { |q| q.echo = 'x' }

How do I use gets/chomp in ruby to login in account without display strings in terminal?

There are a few gems which can do what you want - one of them is password:

Ruby/Password is a collection of password handling routines for Ruby,
including an interface to CrackLib for the purposes of testing
password strength.

require 'password'

 # Define and check a password in code
 pw = Password.new( "bigblackcat" )
 pw.check

 # Get and check a password from the keyboard
 begin
   password = Password.get( "New password: " )
   password.check
 rescue Password::WeakPassword => reason
   puts reason
   retry
 end

In Ruby, how to ask the terminal not to echo key presses?

You cann also use stty to disable echo :

def getch
  %x[stty -echo raw]
  c = $stdin.getc
  %x[stty echo -raw]
  c
end

And in 1.9.3, the io/console library will allow you to do it in a more portable way:

require 'io/console'
$stdin.getch # does the same thing as above :)

Masking password input from the console : Java

A full example ?. Run this code : (NB: This example is best run in the console and not from within an IDE, since the System.console() method might return null in that case.)

import java.io.Console;
public class Main {

    public void passwordExample() {        
        Console console = System.console();
        if (console == null) {
            System.out.println("Couldn't get Console instance");
            System.exit(0);
        }

        console.printf("Testing password%n");
        char[] passwordArray = console.readPassword("Enter your secret password: ");
        console.printf("Password entered was: %s%n", new String(passwordArray));

    }

    public static void main(String[] args) {
        new Main().passwordExample();
    }
}

How do I convert a password into asterisks while it is being entered?

If you want a solution that works on Windows/macOS/Linux and on Python 2 & 3, you can install the pwinput module (formerly called stdiomask):

pip install pwinput

Unlike getpass.getpass() (which is in the Python Standard Library), the pwinput module can display *** mask characters as you type. It is also cross-platform, while getpass is Linux and macOS only.

Example usage:

>>> pwinput.pwinput()
Password: *********
'swordfish'
>>> pwinput.pwinput(mask='X') # Change the mask character.
Password: XXXXXXXXX
'swordfish'
>>> pwinput.pwinput(prompt='PW: ', mask='*') # Change the prompt.
PW: *********
'swordfish'
>>> pwinput.pwinput(mask='') # Don't display anything.
Password:
'swordfish'

Unfortunately this module, like Python's built-in getpass module, doesn't work in IDLE or Jupyter Notebook.

More details at https://pypi.org/project/pwinput/

---

Related Topics