How do I translate this SHA function in Java to an equivalent in Ruby?

Question

I have this algorithm in Java to store passwords in database. I'd like to re-write my application in Ruby on Rails, so I need the same algorithm to compare hashed passwords. What's the Ruby equivalent of this algorithm?

public static String encrypt(String password) {
 MessageDigest md;
 try {
  md = MessageDigest.getInstance("SHA");
  md.update(password.getBytes("UTF-8")); // step 3
  byte raw[] = md.digest(); // step 4
  String hash = (new BASE64Encoder()).encode(raw); // step 5
  return hash; // step 6
 } catch (NoSuchAlgorithmException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 } catch (UnsupportedEncodingException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 } 
 return null;
}

Just for testing purpose, the "teste123" password generates this hash in my Java version: PQ87ndys7DDEAIxeAw5sE6R4y08=

Answer 1

Before you go any further, stop what you're doing and read this Coding Horror article: You're Probably Storing Passwords Incorrectly.

Using a plain hash, with no salt, to encode passwords is nearly as bad as not using any hashing at all.

Answer 2

Before you read this, read Greg's answer about hashing.

Then:

import java.security.*;
import sun.misc.BASE64Encoder;
import java.io.*;
public class test {
  public static String encrypt(String password) {
    MessageDigest md;
    try {
      md = MessageDigest.getInstance("SHA");
      md.update(password.getBytes("UTF-8")); // step 3
      byte raw[] = md.digest(); // step 4
      String hash = (new BASE64Encoder()).encode(raw); // step 5
      return hash; // step 6
    } catch (NoSuchAlgorithmException e) {
    } catch (java.io.UnsupportedEncodingException e) {
    }
    return null;
  }

  public static void main(String[] args) {
    System.out.println(encrypt("my password"));
  }
}

This outputs

ovj3+hlaCAoipokEHaqPIET58zY=

In Ruby:

require 'digest/sha1'
require 'base64'
Base64.b64encode Digest::SHA1.digest('my password')

also outputs

ovj3+hlaCAoipokEHaqPIET58zY=