Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * 
 * BarcodeOverIP (Android < v4.0.3) Version 1.1.0
 * Copyright (C) 2013, Tyler H. Jones (me@tylerjones.me)
 * http://boip.tylerjones.me/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * Filename: Common.java
 * Package Name: com.tylerhjones.boip.client
 * Created By: Tyler H. Jones on Feb 1, 2012 at 2:28:24 PM
 * 
 * Description: Common functions and variable declarations (constants)
 */

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

public class Main {
    public static String SHA1(String text) throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        md.update(text.getBytes());

        byte byteData[] = md.digest();

        //convert the byte to hex format method 1
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < byteData.length; i++) {
            sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
        }

        //System.out.println("Hex format : " + sb.toString());

        //convert the byte to hex format method 2
        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < byteData.length; i++) {
            String hex = Integer.toHexString(0xff & byteData[i]);
            if (hex.length() == 1)
                hexString.append('0');
            hexString.append(hex);
        }
        return hexString.toString();
    }
}