分别加密两个数据,并通过C语言中的rijndael导出为一个文件#

您可以始终将这两个值存储为文件的单独属性。

[Serializable]
public class EncryptedValues
{
    public string Value1 { get; set; }
    public string Value2 { get; set; }

    public static EncryptedValues FromXml(string xmlString)
    {
        if (!string.IsNullOrEmpty(xmlString))
        {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(EncryptedValues));
            using (MemoryStream memoryStream = new MemoryStream())
            {
                using (StreamWriter streamWriter = new StreamWriter(memoryStream))
                {
                    streamWriter.Write(xmlString);
                    streamWriter.Flush();
                    memoryStream.Flush();
                    memoryStream.Position = 0;

                    return (xmlSerializer.Deserialize(memoryStream) as EncryptedValues);
                }
            }
        }

        return null;
    }

    public string ToXml()
    {
        XmlSerializer xmlSerializer = new XmlSerializer(typeof(EncryptedValues));

        using (MemoryStream memoryStream = new MemoryStream())
        {
            using (StreamWriter streamWriter = new StreamWriter(memoryStream))
            {
                xmlSerializer.Serialize(streamWriter, o);
                streamWriter.Flush();
                memoryStream.Flush();
                memoryStream.Position = 0;

                using (StreamReader streamReader = new StreamReader(memoryStream))
                {
                    return streamReader.ReadToEnd();
                }
            }
        }
    }

}