问Java - AES加密压缩文件会导致其损坏。

EN

import java.io.*;
import java.security.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import javax.crypto.*;
import javax.crypto.spec.SecretKeySpec;


public class Main {
    public static void encryptAndClose(FileInputStream fis, FileOutputStream fos) 
            throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {

        // Length is 16 byte
        SecretKeySpec sks = new SecretKeySpec("1234567890123456".getBytes(), "AES");
        // Create cipher
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, sks);      

        // Wrap the output stream for encoding
        CipherOutputStream cos = new CipherOutputStream(fos, cipher);       

        //wrap output with buffer stream
        BufferedOutputStream bos = new BufferedOutputStream(cos);     

        //wrap input with buffer stream
        BufferedInputStream bis = new BufferedInputStream(fis); 

        // Write bytes
        int b;
        byte[] d = new byte[8];
        while((b = bis.read(d)) != -1) {
            bos.write(d, 0, b);
        }
        // Flush and close streams.
        bos.flush();
        bos.close();
        bis.close();
    }


    public static void decryptAndClose(FileInputStream fis, FileOutputStream fos) 
            throws IOException, NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException {

        SecretKeySpec sks = new SecretKeySpec("1234567890123456".getBytes(), "AES");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.DECRYPT_MODE, sks);

        CipherInputStream cis = new CipherInputStream(fis, cipher);

        //wrap input with buffer stream
        BufferedInputStream bis = new BufferedInputStream(cis); 

        //wrap output with buffer stream
        BufferedOutputStream bos = new BufferedOutputStream(fos);       

        int b;
        byte[] d = new byte[8];
        while((b = bis.read(d)) != -1) {
            bos.write(d, 0, b);
        }
        bos.flush();
        bos.close();
        bis.close();
    }
    
    
    static void zipFile(File fileToZip, String fileName, ZipOutputStream zipOut) throws IOException {
        if (fileToZip.isHidden()) {
            return;
        }
        if (fileToZip.isDirectory()) {
            if (fileName.endsWith("/")) {
                zipOut.putNextEntry(new ZipEntry(fileName));
                zipOut.closeEntry();
            } else {
                zipOut.putNextEntry(new ZipEntry(fileName + "/"));
                zipOut.closeEntry();
            }
            File[] children = fileToZip.listFiles();
            for (File childFile : children) {
                zipFile(childFile, fileName + "/" + childFile.getName(), zipOut);
            }
            return;
        }
        FileInputStream fis = new FileInputStream(fileToZip);
        ZipEntry zipEntry = new ZipEntry(fileName);
        zipOut.putNextEntry(zipEntry);
        byte[] bytes = new byte[1024];
        int length;
        while ((length = fis.read(bytes)) >= 0) {
            zipOut.write(bytes, 0, length);
        }
        fis.close();
    }
    
    static void unZipFile(ZipEntry zipEntry,File destDir,ZipInputStream zis, byte[] buffer) throws IOException{
        while (zipEntry != null) {
            File newFile = newFile(destDir, zipEntry);
            if (zipEntry.isDirectory()) {
                if (!newFile.isDirectory() && !newFile.mkdirs()) {
                    throw new IOException("Failed to create directory " + newFile);
                }
            } else {
                // fix for Windows-created archives
                File parent = newFile.getParentFile();
                if (!parent.isDirectory() && !parent.mkdirs()) {
                    throw new IOException("Failed to create directory " + parent);
                }
                
                // write file content
                FileOutputStream fos = new FileOutputStream(newFile);
                int len;
                while ((len = zis.read(buffer)) > 0) {
                    fos.write(buffer, 0, len);
                }
                fos.close();
            }
        zipEntry = zis.getNextEntry();
       }
    }
    public static File newFile(File destinationDir, ZipEntry zipEntry) throws IOException {
        File destFile = new File(destinationDir, zipEntry.getName());

        String destDirPath = destinationDir.getCanonicalPath();
        String destFilePath = destFile.getCanonicalPath();

        if (!destFilePath.startsWith(destDirPath + File.separator)) {
            throw new IOException("Entry is outside of the target dir: " + zipEntry.getName());
        }

        return destFile;
    }
    
    public static void main(String[]args) {
        
        //compress to zip.
        String sourceFile = "C:\\test";
        FileOutputStream fos;
        try {
            fos = new FileOutputStream("C:\\test\\test.zip");
            ZipOutputStream zipOut = new ZipOutputStream(fos);
            File fileToZip = new File(sourceFile);

            zipFile(fileToZip, fileToZip.getName(), zipOut);
            zipOut.close();
            fos.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        //encrypt the zip.
        String outDir = "C:/test";
        String outFilename = "test-encrypt.zip";
        
        String inDir = "C:/test";
        String inFilename = "test.zip";
        
        File output= new File(outDir, outFilename);

        File input= new File(inDir, inFilename);

        if (input.exists()) {
            System.out.println("test");
            FileInputStream inStream;
            try {
                inStream = new FileInputStream(input);
                FileOutputStream outStream = new FileOutputStream(output);
    
                encryptAndClose(inStream, outStream);   
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}