id.govca.detachedsignature.FileHelper.java Source code

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Here is the source code for id.govca.detachedsignature.FileHelper.java

Source

/*
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package id.govca.detachedsignature;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.imageio.ImageIO;
import org.bouncycastle.asn1.ASN1InputStream;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.cms.CMSSignedData;

/**
 *
 * @author Rachmawan
 */
public class FileHelper {

    public static byte[] binaryFileReader(String path) throws FileNotFoundException, IOException {
        File file = new File(path);
        byte[] fileData = new byte[(int) file.length()];
        try (DataInputStream dis = new DataInputStream(new FileInputStream(file))) {
            dis.readFully(fileData);

            System.out.println("FILE READ SUCCESSFUL");
        }

        return fileData;
    }

    public static void binaryFileWriter(String path, byte[] content) {
        try (FileOutputStream fileOuputStream = new FileOutputStream(path)) {
            fileOuputStream.write(content);

            System.out.println("FILE HAS BEEN WRITTEN");
        } catch (FileNotFoundException ex) {
            Logger.getLogger(FileHelper.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(FileHelper.class.getName()).log(Level.SEVERE, null, ex);
        }

    }

    public static byte[] BitmapToByteArray(String path) {
        File fnew = new File(path);
        BufferedImage originalImage;
        try {
            originalImage = ImageIO.read(fnew);
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            ImageIO.write(originalImage, "jpg", baos);
            byte[] imageInByte = baos.toByteArray();

            return imageInByte;
        } catch (IOException ex) {
            Logger.getLogger(FileHelper.class.getName()).log(Level.SEVERE, null, ex);
        }

        return null;
    }

    public static byte[] CMStoDER(CMSSignedData sigData) throws IOException {
        ByteArrayInputStream inStream = new ByteArrayInputStream(sigData.getEncoded());
        ASN1InputStream asnInputStream = new ASN1InputStream(inStream);

        ASN1Primitive asp = asnInputStream.readObject();
        byte[] result = asp.getEncoded("DER");

        return result;
    }

    public FileHelper() {
    }
}