java - php中未调用解密函数

Question

我在java中使用加密并在php中执行解密。
我正在使用以下代码在java中进行加密。

String iv = "fedcba9876543210";
IvParameterSpec ivspec;
KeyGenerator keygen;
Key key;

ivspec = new IvParameterSpec(iv.getBytes());

keygen = KeyGenerator.getInstance("AES");
keygen.init(128);
key = keygen.generateKey();

keyspec = new SecretKeySpec(key.getEncoded(), "AES"); 

Cipher cipher;
byte[] encrypted;

cipher = Cipher.getInstance("AES/CBC/NoPadding");
cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
encrypted = cipher.doFinal(padString(text).getBytes());

private String padString(String source) {
  char paddingChar = ' ';
  int size = 16;
  int padLength = size - source.length() % size;

  for (int i = 0; i < padLength; i++) {
    source += paddingChar;
  }

  return source;
}

为了在 php 中解密，我使用以下代码:

function decrypt($code, $key) {
  $key = $this->hex2bin($key);
  $code = $this->hex2bin($code);

  $td = mcrypt_module_open("rijndael-128", "", "cbc", "fedcba9876543210");

  mcrypt_generic_init($td, $key, CIPHER_IV);
  $decrypted = mdecrypt_generic($td, $code);

  mcrypt_generic_deinit($td);
  mcrypt_module_close($td);

  return utf8_encode(trim($decrypted));
}

function hex2bin($hexdata) {
  $bindata = "";

  for ($i = 0; $i < strlen($hexdata); $i += 2) {
    $bindata .= chr(hexdec(substr($hexdata, $i, 2)));
  }

  return $bindata;
}

加密工作正常，但在 php 的此函数解密期间，流程停止:

$td = mcrypt_module_open("rijndael-128", "", "cbc", "fedcba9876543210");

那么我错过了什么？

Answer 1

您遇到的错误是什么？

您是否安装/编译了 PHP 的 mcrypt？ Info here