小编pfx*_*pfx的帖子

我想多次加密一个字符串。但是我不知道为什么我以一个空字节数组结尾。一个公钥是可以的，但是添加另一个则返回空结果。有人知道为什么吗？

private static byte[] encrypt(LinkedList<PublicKey> keys, byte[] input) throws Exception {
    System.out.println("Input length : " + input.length);
    if (keys.isEmpty()) {
        return input;
    }
    PublicKey publicKey = keys.poll();
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    Cipher cipher = Cipher.getInstance("RSA");
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    try (CipherOutputStream cipherOutputStream = new CipherOutputStream(byteArrayOutputStream, cipher)) {
        cipherOutputStream.write(input);
    }
    byteArrayOutputStream.flush();
    byteArrayOutputStream.close();
    return encrypt(keys, byteArrayOutputStream.toByteArray());
}

public static void main(String[] args) throws Exception {
    KeyPair pair1 = createPair();
    KeyPair pair2 = createPair();
    LinkedList<PublicKey> keys = new LinkedList<>();
    keys.add(pair1.getPublic());
    keys.add(pair2.getPublic());
    byte[] result = …