如何在asp.net中传递加密的查询字符串

// 加密查询字符串
public static string EncryptQueryString(string queryString, string key)
{
    byte[] keyBytes = Encoding.UTF8.GetBytes(key);
    using (Aes aes = Aes.Create())
    {
        aes.Key = keyBytes;
        aes.GenerateIV();
        using (MemoryStream ms = new MemoryStream())
        {
            ms.Write(aes.IV, 0, aes.IV.Length);
            using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
            {
                byte[] queryBytes = Encoding.UTF8.GetBytes(queryString);
                cs.Write(queryBytes, 0, queryBytes.Length);
                cs.FlushFinalBlock();
                return Convert.ToBase64String(ms.ToArray());
            }
        }
    }
}

// 解密查询字符串
public static string DecryptQueryString(string encryptedQueryString, string key)
{
    byte[] keyBytes = Encoding.UTF8.GetBytes(key);
    byte[] encryptedBytes = Convert.FromBase64String(encryptedQueryString);
    using (Aes aes = Aes.Create())
    {
        aes.Key = keyBytes;
        using (MemoryStream ms = new MemoryStream(encryptedBytes))
        {
            byte[] iv = new byte[aes.IV.Length];
            ms.Read(iv, 0, iv.Length);
            aes.IV = iv;
            using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Read))
            {
                using (StreamReader sr = new StreamReader(cs))
                {
                    return sr.ReadToEnd();
                }
            }
        }
    }
}