edu.smc.mediacommons.modules.Md5Module.java Source code

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Here is the source code for edu.smc.mediacommons.modules.Md5Module.java

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/**
* The MIT License (MIT)
* 
* Copyright (c) 2015 CS56
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
 */

package edu.smc.mediacommons.modules;

import java.io.*;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Formatter;

public class Md5Module {

    public static String getMD5(File file) {
        String md5 = null;
        FileInputStream fis = null;

        try {
            fis = new FileInputStream(file);
            md5 = org.apache.commons.codec.digest.DigestUtils.md5Hex(fis);
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        return md5;
    }

    public static String getSHA1(final File file) {
        String sha1 = null;

        try {
            final MessageDigest messageDigest = MessageDigest.getInstance("SHA1");

            InputStream is = new BufferedInputStream(new FileInputStream(file));
            final byte[] buffer = new byte[1024];
            for (int read = 0; (read = is.read(buffer)) != -1;) {
                messageDigest.update(buffer, 0, read);
            }

            // Convert the byte to hex format
            Formatter formatter = new Formatter();
            for (final byte b : messageDigest.digest()) {
                formatter.format("%02x", b);
            }

            sha1 = formatter.toString();
            formatter.close();
            is.close();
        } catch (IOException | NoSuchAlgorithmException e) {
            e.printStackTrace();
        } finally {

        }

        return sha1;
    }
}