Get MD5 string out of a string - Java Security

Java examples for Security:MD5

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Description

Get MD5 string out of a string

Demo Code

//package com.java2s;

import java.security.MessageDigest;

public class Main {
    public static void main(String[] argv) {
        String inStr = "java2s.com";
        System.out.println(string2MD5(inStr));
    }/*from   w w w. j  a  va2 s.  c  o m*/

    public static String string2MD5(String inStr) {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
            return "";
        }
        char[] charArray = inStr.toCharArray();
        byte[] byteArray = new byte[charArray.length];

        for (int i = 0; i < charArray.length; i++)
            byteArray[i] = (byte) charArray[i];
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16)
                hexValue.append("0");
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();

    }
}

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