org.pieShare.pieTools.pieUtilities.service.security.hashService.MD5Service.java Source code

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Here is the source code for org.pieShare.pieTools.pieUtilities.service.security.hashService.MD5Service.java

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package org.pieShare.pieTools.pieUtilities.service.security.hashService;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.*;
import org.apache.commons.lang3.Validate;
import org.pieShare.pieTools.pieUtilities.service.security.IProviderService;

/**
 *
 * @author richy
 */
public class MD5Service implements IHashService {

    private IProviderService provider;

    public void setProviderService(IProviderService service) {
        this.provider = service;
    }

    public MD5Service() {

    }

    @Override
    public byte[] hash(byte[] data) {
        MessageDigest messageDigest = provider.getMessageDigest();
        Validate.notNull(messageDigest);
        messageDigest.update(data);
        byte[] resultByte = messageDigest.digest();
        messageDigest.reset();

        return resultByte;
    }

    @Override
    public byte[] hashStream(InputStream stream) throws IOException {
        //todo: maybe the stream should be created in here instead outside
        //this way this function can close the stream in the end
        MessageDigest messageDigest = provider.getMessageDigest();

        byte[] buffer = new byte[1024];
        int read = 0;

        while ((read = stream.read(buffer)) != -1) {
            Validate.notNull(messageDigest);
            messageDigest.update(buffer, 0, read);
        }

        byte[] resultByte = messageDigest.digest();
        messageDigest.reset();
        return resultByte;
    }

    @Override
    public byte[] hashStream(File file) throws IOException {
        FileInputStream fis = new FileInputStream(file);
        byte[] res = this.hashStream(fis);
        fis.close();
        return res;
    }

    @Override
    public boolean isMD5Equal(byte[] first, byte[] second) {
        if (first.length != second.length) {
            return false;
        }

        for (int i = 0; i < first.length; i++) {
            if (first[i] != second[i]) {
                return false;
            }
        }
        return true;
    }
}