用于将字节数组转换为字符串的编码，反之亦然 [英] Encoding to use to convert Bytes array to String and vice-versa

问题描述

我使用此代码加密字符串(基本上，这是 MSDN 上的 Rijndael 类):

I use this code to encrypt a string (basically, this is the example given on the Rijndael class on MSDN):

public static String AESEncrypt(String str2Encrypt, Byte[] encryptionKey, Byte[] IV)
{
    Byte[] encryptedText;

    using (RijndaelManaged rijAlg = new RijndaelManaged())
    {
        // Use the provided key and IV
        rijAlg.Key = encryptionKey;
        rijAlg.IV = IV;

        // Create a decrytor to perform the stream transform
        ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);

        // Create the streams used for encryption
        using (MemoryStream msEncrypt = new MemoryStream())
        using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
        {
            using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
            {
                // Write all data to the stream
                swEncrypt.Write(str2Encrypt);
            }

            encryptedText = msEncrypt.ToArray();
        }
    }

    return Encoding.Default.GetString(encryptedText);
}

我使用 Encoding.Default 将字节数组转换为字符串，但我不确定这是一个好的解决方案.我的目标是将加密文本(例如密码...)存储在文件中.我应该继续使用 Encoding.Default 还是使用 Encoding.UTF8Encoding 或其他东西?

I use Encoding.Default to convert a byte array to a string but I'm not sure it's a good solution. My goal is to store encrypted text (such as passwords...) in files. Should I continue with Encoding.Default or use Encoding.UTF8Encoding or something else?

如果文件被移动到不同的操作系统上，当我尝试加密和解密它们时，这会对存储的值产生负面影响吗?

Can that have negative consequences on the stored values when I try to encrypt and decrypt them if the files are moved onto different OS'?

推荐答案

绝对不要使用 Encoding 将任意二进制数据转换为文本.Encoding 适用于当您获得真正编码文本的二进制数据时 - 这不是.

You should absolutely not use an Encoding to convert arbitrary binary data to text. Encoding is for when you've got binary data which genuinely is encoded text - this isn't.

改为使用 Convert.ToBase64String 将二进制数据编码为文本，然后使用 Convert.FromBase64String.

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