Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import android.util.Log;

import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Main {
    final protected static char[] hexArray = "0123456789ABCDEF".toCharArray();
    static final String TAG = "jamorham cip";

    public static String getSHA256(byte[] mydata) {
        try {
            MessageDigest digest = java.security.MessageDigest.getInstance("SHA256");
            digest.update(mydata);
            return bytesToHex(digest.digest()).toLowerCase();
        } catch (NoSuchAlgorithmException e) {
            Log.e(TAG, "SHA hash exception: " + e.toString());
            return null;
        }
    }

    public static String getSHA256(String mykey) {
        try {
            MessageDigest digest = java.security.MessageDigest.getInstance("SHA256");
            digest.update(mykey.getBytes(Charset.forName("UTF-8")));
            return bytesToHex(digest.digest()).toLowerCase();
        } catch (NoSuchAlgorithmException e) {
            Log.e(TAG, "SHA hash exception: " + e.toString());
            return null;
        }
    }

    public static String bytesToHex(byte[] bytes) {
        char[] hexChars = new char[bytes.length * 2];
        for (int j = 0; j < bytes.length; j++) {
            int v = bytes[j] & 0xFF;
            hexChars[j * 2] = hexArray[v >>> 4];
            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
        }
        return new String(hexChars);
    }
}