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Saturday, 2 May 2015

How to generate secure password using MD5 in java



How To Generate Secure Password Using MD5 In Java


import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class SimpleMD5
{
    public static void main(String[] args)
    {
        System.out.println("new password= "+SimpleMD5.getencrypt("psaaword"));
    }
  
  
    public static String getencrypt(String passwordToHash){
      
        String generatedPassword = null;
        try {
            // Create MessageDigest instance for MD5
            MessageDigest md = MessageDigest.getInstance("MD5");
            //Add password bytes to digest
            md.update(passwordToHash.getBytes());
            //Get the hash's bytes
            byte[] bytes = md.digest();
            //This bytes[] has bytes in decimal format;
            //Convert it to hexadecimal format
            StringBuilder sb = new StringBuilder();
            for(int i=0; i< bytes.length ;i++)
            {
                sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
            }
            //Get complete hashed password in hex format
            generatedPassword = sb.toString();
        }
        catch (NoSuchAlgorithmException e)
        {
            e.printStackTrace();
        }
        return generatedPassword;
      
    }
  
  
}


Output:

new password= a52693edc4621e5a3078e01971ac1fdc


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