/// <summary>
/// 获取RSA的 私有、公有的秘钥
/// </summary>
/// <param name="savePath">秘钥保存路径</param>
/// <param name="keyName">密钥的名字</param>
/// <returns></returns>
public static bool CreateRSAKey(string savePath, string keyName)
{
try
{
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
{
RSAParameters publicParam = rsa.ExportParameters(false);
XmlSerializer privateXml = new XmlSerializer(publicParam.GetType());
string pathPublic = savePath.TrimEnd('/', '\\') + "/" + keyName + "_rsa.pub";
using (FileStream fs = new FileStream(pathPublic, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
privateXml.Serialize(fs, publicParam);
}
RSAParameters privateParam = rsa.ExportParameters(true);
XmlSerializer publicXml = new XmlSerializer(privateParam.GetType());
string pathPrivate = savePath.TrimEnd('/', '\\') + "/" + keyName + "_rsa";
using (FileStream fs = new FileStream(pathPrivate, FileMode.OpenOrCreate, FileAccess.ReadWrite))
{
publicXml.Serialize(fs, privateParam);
}
}
return(true);
}
catch (System.Exception error)
{
System.Console.WriteLine("CreateRSAPublicKey Error: " + error.Message);
return(false);
}
}
/// <summary>
/// Private method for serializing RSAParameters to XML-string
/// </summary>
private string RSAParametersToXML(RSAParameters key)
{
XmlSerializer serializer = new XmlSerializer(key.GetType());
using (StringWriter textWriter = new StringWriter())
{
serializer.Serialize(textWriter, key);
return(textWriter.ToString());
}
}
public static string ToXmlString(this RSAParameters rsaParameters)
{
var xmlSerializer = new XmlSerializer(rsaParameters.GetType());
using (var textWriter = new StringWriter())
{
xmlSerializer.Serialize(textWriter, rsaParameters);
return(textWriter.ToString());
}
}
// not always implemented in https://docs.microsoft.com/en-us/dotnet/api/system.security.cryptography.rsa
public static void FromXmlString(RSA rsa, string xmlString)
{
var xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xmlString);
var nodes = xmlDoc.DocumentElement.ChildNodes.Cast <XmlNode>()
.ToDictionary(n => n.Name, n => Convert.FromBase64String(n.InnerText.Trim()));
object parameters = new RSAParameters(); //boxing needed to set values
foreach (var node in nodes)
{
parameters.GetType().GetField(node.Key).SetValue(parameters, node.Value);
}
rsa.ImportParameters((RSAParameters)parameters);
}