Question

我尝试在Java中使用AES。我找到了一个代码片段，但输出错误。输出中有很多EF BF BD。我找不到我的代码有什么问题？

public class AES
{
static String encryptionKey = "48C3B4286FF421A4A328E68AD9E542A4";
    static String clearText = "00000000000000000000000000000000";

    public static void main(String[] args) throws UnsupportedEncodingException, InvalidKeyException, NoSuchAlgorithmException, NoSuchPaddingException, IllegalBlockSizeException, BadPaddingException
    {
        encr();
    }

    public static String toHexString(byte[] ba)
    {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < ba.length; i++)
        {
            sb.append(String.format("%02X ", ba[i]));
        }
        return sb.toString();
    }

    public static void encr() throws InvalidKeyException, UnsupportedEncodingException, IllegalBlockSizeException, BadPaddingException, NoSuchAlgorithmException, NoSuchPaddingException
    {
        //Security.addProvider(new com.sun.crypto.provider.SunJCE());
        SecretKeySpec secretKey = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");

        byte[] clearTextBytes = clearText.getBytes("UTF8");
        Cipher cipher = Cipher.getInstance("AES");
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] cipherBytes = cipher.doFinal(clearTextBytes);

        System.out.print("enc1:  ");
        for (int i = 0; i < cipherBytes.length; i++)
        {
            System.out.print(cipherBytes[i]);
        }
        System.out.println("");

        String cipherText = new String(cipherBytes, "UTF8");
        System.out.println("enc2: " + cipherText);

        System.out.println("enc3: " + toHexString(cipherText.getBytes("UTF-8")));
    }
}

输出是：

enc1:  51 72 -122 -57 -109 127 57 85 116 63 -89 -35 55 -72 37 -96 51 72 -122 -57 -109 127 57 85 116 63 -89 -35 55 -72 37 -96 -82 103 -117 -60 -102 -91 -51 55 -53 23 33 -82 -70 -14 74 41 
enc2: 3H�Ǔ9Ut?��7�%�3H�Ǔ9Ut?��7�%��g�Ě��7�!���
enc3: 33 48 EF BF BD C7 93 7F 39 55 74 3F EF BF BD EF BF BD 37 EF BF BD 25 EF BF BD 33 48 EF BF BD C7 93 7F 39 55 74 3F EF BF BD EF BF BD 37 EF BF BD 25 EF BF BD EF BF BD 67 EF BF BD C4 9A EF BF BD EF BF BD 37 EF BF BD 17 21 EF BF BD EF BF BD EF BF BD

但它应该是

33  48  86  c7  93  7f  39  55  74  3f  a7  dd  37  b8  25  a0

Answer 1

如果您打印if(Input.GetKey(KeyCode.DownArrow)) transform.Translate(-Vector3.forward*speed*Time.deltaTime);，则结果为

33 48 86 C7 93 7F 39 55 74 3F A7 DD 37 B8 25 A0 33 48 86 C7 93 7F 39 55 74 3F A7 DD 37 B8 25 A0 AE 67 8B C4 9A A5 CD 37 CB 17 21 AE BA F2 4A 29

当您将toHexString(cipherText.getBytes("UTF-8"))转换为byte[]时，java会在charset上删除无效数据库。

Java中的错误AES密码

1 个答案: