Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.security.MessageDigest;

public class Main {
    private static final char[] DIGITS_LOWER = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a',
            'b', 'c', 'd', 'e', 'f' };

    public static String hexSHA1(String value) {
        try {
            MessageDigest md = MessageDigest.getInstance("SHA-1");
            md.update(value.getBytes("utf-8"));
            byte[] digest = md.digest();
            return byteToHexString(digest);
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }

    public static String byteToHexString(byte[] bytes) {
        return String.valueOf(encodeHex(bytes));
    }

    protected static char[] encodeHex(byte[] data) {
        int l = data.length;
        char[] out = new char[l << 1];
        int i = 0;

        for (int j = 0; i < l; ++i) {
            out[j++] = DIGITS_LOWER[(240 & data[i]) >>> 4];
            out[j++] = DIGITS_LOWER[15 & data[i]];
        }

        return out;
    }
}