CipherOutputStream和ZipOutputStream

Question

我正在尝试创建一个zip文件，其中包含加密文件和该文件的加密密钥。这是我的代码：

zip

when (params) {
    is RecyclerView.LayoutParams -> { /* smart cast here */ }
    else -> { /* optional other cases */ }
}

// casts to RecyclerView.LayoutParams? and then invokes the body of let if not null (when params is a RecyclerView.LayoutParams)
(params as? RecyclerView.LayoutParams)?.let {
     /* smart cast here */
}

连接的流

 ZipOutputStream zout = new ZipOutputStream(new FileOutputStream("zip.zip"));

获取密钥

 PipedInputStream pis = new PipedInputStream();
 PipedOutputStream pos = new PipedOutputStream(pis);

获取密码

 KeyGenerator keygen=KeyGenerator.getInstance(storageSettings.getFileEncryptAlgorithm());
 SecretKey key = keygen.generateKey();

现在我将密码输出输出到pipedOutputStream

 Сipher cipher = Cipher.getInstance("DESede");
 cipher.init(Cipher.ENCRYPT_MODE, key);

添加到zip及其那里，但下一个文件为空

 CipherOutputStream cos = new CipherOutputStream(pos,cipher);
 byte[] m = new byte[1024];
 int position;
 while ((position = someInputData.read(m, 0, 1024)) >= 0)
 {
  cos.write(m, 0, position);
 }

现在我想通过rsa加密SecretKey密钥，并且我有文件中的密钥对

 addFileToZip(zout, pis, backup.getFilename());
 cos.flush();

现在我想用加密密钥创建第二个文件，但是我的zip中有空文件，除了第一个文件外，所有文件都为空

 String publicKeyContent = new String(Files.readAllBytes(Paths.get(ClassLoader.getSystemResource(storageSettings.getPublicKeyFile()).toURI())));
 publicKeyContent = publicKeyContent.replaceAll("\\n", "").replace("-----BEGIN PUBLIC KEY-----", "").replace("-----END PUBLIC KEY-----", "");
 KeyFactory keyfactory = KeyFactory.getInstance(storageSettings.getKeyEnryptAlgorithm());
 X509EncodedKeySpec keySpecX509 = new X509EncodedKeySpec(Base64.getDecoder().decode(publicKeyContent));
 RSAPublicKey publicKey = (RSAPublicKey) keyfactory.generatePublic(keySpecX509);
 cipher = Cipher.getInstance(storageSettings.getKeyEnryptAlgorithm());
 cipher.init(Cipher.ENCRYPT_MODE, publicKey);

这是addFileToZip（）

 CipherOutputStream cos1 = new CipherOutputStream(pos,cipher);
 byte[] tmp = key.getEncoded();
 cos1.write(tmp);
 addFileToZip(zout, pis,"key.txt");