c# - 'Stream 不支持使用 CryptoStream 对象寻找'

Question

我正在尝试使用以下代码加密一些数据:

public static byte[] EncryptString(byte[] input, string password)
{
    PasswordDeriveBytes pderiver = new PasswordDeriveBytes(password, null);
    byte[] ivZeros = new byte[8];
    byte[] pbeKey = pderiver.CryptDeriveKey("RC2", "MD5", 128, ivZeros);

    RC2CryptoServiceProvider RC2 = new RC2CryptoServiceProvider();

    byte[] IV = new byte[8];
    ICryptoTransform encryptor = RC2.CreateEncryptor(pbeKey, IV);

    MemoryStream msEncrypt = new MemoryStream();
    CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write);
    csEncrypt.Write(input, 0, input.Length);
    csEncrypt.FlushFinalBlock();

    return msEncrypt.ToArray();
}

但是，当它初始化我的 CryptoStream 对象时，它会抛出以下错误:

"Stream does not support seeking." To clarify, there is no error handling in the above code, so just running this will not "break", persay. But stepping through the code, the CryptoStream object will show this error in its properties once it's been initialized.

这是为什么？我该如何避免呢？

Answer 1

所以代码实际上运行没有异常，但问题是当你在调试器中查看属性时？如果是这样，那很容易 - 某些属性(例如 Position)依赖于能够在流中查找。您不能使用 CryptoStream 执行此操作 - 因此属性评估失败。

您无需避免这种情况 - 这完全没问题。