用C#解密JAVA的AES加密字符串

Question

附JAVA的加密方法

public static String encrypt(String s, String token) {
try {
byte[] key = Hex.toBytes(token);
return encryptBase64URLSafe(s, key);
} catch (Exception e) {
// e.printStackTrace();
return null;
}
}
public static byte[] toBytes(String s) {
int len = s.length();
byte[] data = new byte[len / 2];
for (int i = 0; i < len; i += 2) {
data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
+ Character.digit(s.charAt(i + 1), 16));
}
return data;
}
private static String encryptBase64URLSafe(String s, byte[] key) {
BaseEncoding b64 = BaseEncoding.base64Url().omitPadding();
byte[] encryptedBytes = encryptBytes(s, key);
return b64.encode(encryptedBytes);
}
private static byte[] encryptBytes(String s, byte[] key) {
if (key == null) {
return null;
}
// 判断Key是否为16位
if (key.length != 16) {
return null;
}
SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
try {
Cipher cipher = Cipher.getInstance(ALGORITHM);

        cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
        byte[] encrypted = cipher.doFinal(s.getBytes("utf-8"));
        return encrypted;
    } catch (Exception e) {
        return null;
    }
}

这个用C#怎么解密啊，大家帮帮忙,我尝试了很多方法都不行
在Convert.FromBase64String(encryptedText);时就报错

Answer 1

保证加解密算法是对称的
其实加解密的数据格式都一致