slowAES加密和java解密

Question

我尝试实现了与AES .NET中讨论的步骤相同的步骤

但如果没有成功，我似乎无法让java和slowAes更好地合作……附件是我的代码，很抱歉我不能添加更多，这是我第一次尝试处理加密问题，如果有任何帮助，我将不胜感激

private static final String ALGORITHM = "AES";
private static final byte[] keyValue = getKeyBytes("12345678901234567890123456789012");

private static final byte[] INIT_VECTOR = new byte[16];
private static IvParameterSpec ivSpec = new IvParameterSpec(INIT_VECTOR);

public static void main(String[] args) throws Exception {
    String encoded = encrypt("watson?");
    System.out.println(encoded);
}

private static Key generateKey() throws Exception {
    Key key = new SecretKeySpec(keyValue, ALGORITHM);
    // SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(ALGORITHM);
    // key = keyFactory.generateSecret(new DESKeySpec(keyValue));
    return key;
}

private static byte[] getKeyBytes(String key) {
    byte[] hash = DigestUtils.sha(key); // key.getBytes()
    byte[] saltedHash = new byte[16];
    System.arraycopy(hash, 0, saltedHash, 0, 16);
    return saltedHash;
}

public static String encrypt(String valueToEnc) throws Exception {
    Key key = generateKey();
    Cipher c = Cipher.getInstance("AES/CBC/PKCS5Padding");
    c.init(Cipher.ENCRYPT_MODE, key,ivSpec);
    byte[] encValue = c.doFinal(valueToEnc.getBytes());
    String encryptedValue = new BASE64Encoder().encode(encValue);
    return encryptedValue;
}

public static String decrypt(String encryptedValue) throws Exception {
    Key key = generateKey();
    Cipher c = Cipher.getInstance(ALGORITHM);
    c.init(Cipher.DECRYPT_MODE, key);
    byte[] decordedValue = new BASE64Decoder().decodeBuffer(encryptedValue);
    byte[] decValue = c.doFinal(decordedValue);
    String decryptedValue = new String(decValue);
    return decryptedValue;
}

返回的字节数不同，提前谢谢。

Answer 1

您在CBC模式和PKC5Padding中使用AES加密数据，但只使用纯AES进行解密。在decrypt方法中，您需要使用"AES/CBC/PKCS5Padding“创建Cipher，就像在encrypt方法中一样。