AES加密算法在中文win10系统加解密正常，但是在英文版win10系统可以加密，但是解密有问题

/// <summary>
/// AES base64 解密算法；Key为16位
/// </summary>
/// <param name="Data">需要解密的字符串</param>
/// <param name="Key">Key为16位 密钥</param>
/// <returns></returns>
public static string RST_AesDecrypt_Base64(string Data)
{
try
{
if (string.IsNullOrEmpty(Data))
{
return null;
}
if (string.IsNullOrEmpty(Key))
{
return null;
}
string Vector = Key.Substring(0, 16);
byte[] encryptedBytes =Convert.FromBase64String(Data);
byte[] bKey = new byte[32];
Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
byte[] bVector = new byte[16];
Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);
byte[] original = null; // 解密后的明文
Rijndael Aes = Rijndael.Create();
//add
Aes.Mode = CipherMode.CBC;//兼任其他语言的des
Aes.BlockSize = 128;
Aes.Padding = PaddingMode.PKCS7;
//add end
try
{
// 开辟一块内存流，存储密文
using (MemoryStream Memory = new MemoryStream(encryptedBytes))
{
//把内存流对象包装成加密流对象
using (CryptoStream Decryptor = new CryptoStream(Memory,
Aes.CreateDecryptor(bKey, bVector),
CryptoStreamMode.Read))
{
// 明文存储区
using (MemoryStream originalMemory = new MemoryStream())
{
byte[] Buffer = new byte[1024];
Int32 readBytes = 0;
while ((readBytes = Decryptor.Read(Buffer, 0, Buffer.Length)) > 0)
{
originalMemory.Write(Buffer, 0, readBytes);
}
original = originalMemory.ToArray();
}
}
}
}
catch
{
original = null;
}
//var aa= Encoding.UTF32.GetString(original);
return Encoding.UTF8.GetString(original);
}
catch { return null; }
}

    /// <summary>
    ///  AES base64 加密算法；Key 为16位
    /// </summary>
    /// <param name="Data">需要加密的字符串</param>
    /// <returns></returns>
    public static string RST_AesEncrypt_Base64(string Data)
    {
        if (string.IsNullOrEmpty(Data))
        {
            return null;
        }
        if (string.IsNullOrEmpty(Key))
        {
            return null;
        }
        string Vector = Key.Substring(0, 16);
        Byte[] plainBytes = Encoding.UTF8.GetBytes(Data);
        Byte[] bKey = new Byte[32];
        Array.Copy(Encoding.UTF8.GetBytes(Key.PadRight(bKey.Length)), bKey, bKey.Length);
        Byte[] bVector = new Byte[16];
        Array.Copy(Encoding.UTF8.GetBytes(Vector.PadRight(bVector.Length)), bVector, bVector.Length);
        Byte[] Cryptograph = null; // 加密后的密文  
        Rijndael Aes = Rijndael.Create();
        //add 
        Aes.Mode = CipherMode.CBC;//兼任其他语言的des
        Aes.BlockSize = 128;
        Aes.Padding = PaddingMode.PKCS7;
        //add end
        try
        {
            // 开辟一块内存流  
            using (MemoryStream Memory = new MemoryStream())
            {
                // 把内存流对象包装成加密流对象  
                using (CryptoStream Encryptor = new CryptoStream(Memory,
                 Aes.CreateEncryptor(bKey, bVector),
                 CryptoStreamMode.Write))
                {
                    // 明文数据写入加密流  
                    Encryptor.Write(plainBytes, 0, plainBytes.Length);
                    Encryptor.FlushFinalBlock();

                    Cryptograph = Memory.ToArray();
                }
            }
        }
        catch
        {
            Cryptograph = null;
        }
        return Convert.ToBase64String(Cryptograph);
    }