encrypt کردن (کدگذاری) ویدئو (حل شد)

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.Cipher;
import javax.crypto.CipherOutputStream;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class Encrypter {
    private final static int IV_LENGTH                            = 16; // Default length with Default 128
    // key AES encryption
private final static int DEFAULT_READ_WRITE_BLOCK_BUFFER_SIZE = 1024;

    private final static String ALGO_RANDOM_NUM_GENERATOR = "SHA1PRNG";
    private final static String ALGO_SECRET_KEY_GENERATOR = "AES";
    private final static String ALGO_VIDEO_ENCRYPTOR      = "AES/CBC/PKCS5Padding";

@SuppressWarnings("resource")
    public static void encrypt(SecretKey key, AlgorithmParameterSpec paramSpec, InputStream in, OutputStream out)
            throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
InvalidAlgorithmParameterException, IOException {
        try {
            // byte[] iv = new byte[] { (byte) 0x8E, 0x12, 0x39, (byte) 0x9C,
            // 0x07, 0x72, 0x6F, 0x5A, (byte) 0x8E, 0x12, 0x39, (byte) 0x9C,
            // 0x07, 0x72, 0x6F, 0x5A };
            // AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
Cipher c = Cipher.getInstance(ALGO_VIDEO_ENCRYPTOR);
c.init(Cipher.ENCRYPT_MODE, key, paramSpec);
out = new CipherOutputStream(out, c);
            int    count  = 0;
            byte[] buffer = new byte[DEFAULT_READ_WRITE_BLOCK_BUFFER_SIZE];
            while ((count = in.read(buffer)) >= 0) {
                out.write(buffer, 0, count);
}
        } finally {
            out.close();
}
    }

    @SuppressWarnings("resource")
    public static void decrypt(SecretKey key, AlgorithmParameterSpec paramSpec, InputStream in, OutputStream out)
            throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException,
InvalidAlgorithmParameterException, IOException {
        try {
            // byte[] iv = new byte[] { (byte) 0x8E, 0x12, 0x39, (byte) 0x9C,
            // 0x07, 0x72, 0x6F, 0x5A, (byte) 0x8E, 0x12, 0x39, (byte) 0x9C,
            // 0x07, 0x72, 0x6F, 0x5A };
            // AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);
Cipher c = Cipher.getInstance(ALGO_VIDEO_ENCRYPTOR);
c.init(Cipher.DECRYPT_MODE, key, paramSpec);
out = new CipherOutputStream(out, c);
            int    count  = 0;
            byte[] buffer = new byte[DEFAULT_READ_WRITE_BLOCK_BUFFER_SIZE];
            while ((count = in.read(buffer)) >= 0) {
                out.write(buffer, 0, count);
}
        } finally {
            out.close();
}
    }

    public static void main(String[] args) {
        File inFile      = new File("C:/enc_test/video.swf");
File outFile     = new File("C:/enc_test/enc_video.swf");
File outFile_dec = new File("C:/enc_test/dec_video.swf");

        try {
            SecretKey key = KeyGenerator.getInstance(ALGO_SECRET_KEY_GENERATOR).generateKey();

            byte[]    keyData = key.getEncoded();
SecretKey key2    = new SecretKeySpec(keyData, 0, keyData.length, ALGO_SECRET_KEY_GENERATOR); //if you want to store key bytes to db so its just how to //recreate back key from bytes array

byte[] iv = new byte[IV_LENGTH];
SecureRandom.getInstance(ALGO_RANDOM_NUM_GENERATOR).nextBytes(iv); // If
            // storing
            // separately
AlgorithmParameterSpec paramSpec = new IvParameterSpec(iv);

Encrypter.encrypt(key, paramSpec, new FileInputStream(inFile), new FileOutputStream(outFile));
Encrypter.decrypt(key2, paramSpec, new FileInputStream(outFile), new FileOutputStream(outFile_dec));
} catch (Exception e) {
            e.printStackTrace();
}

    }

}