开源 .net license tool, EasyLicense !-白红宇

使用代码：

Easy License 非常容易使用，为了验证一个软件，你需要下面3个步骤。

1: Create a public/private Key.

if (File.Exists("privateKey.xml") || File.Exists("publicKey.xml"))

{

var result = MessageBox.Show("The key is existed, override it?", "Warning", MessageBoxButton.YesNo);

if (result == MessageBoxResult.No)

{

return;

}

var privateKey = "";

var publicKey = "";

LicenseGenerator.GenerateLicenseKey(out privateKey, out publicKey);

File.WriteAllText("privateKey.xml", privateKey);

File.WriteAllText("publicKey.xml", publicKey);

MessageBox.Show("The Key is created, please backup it.");

2: Use private key to create a license

if (!File.Exists("privateKey.xml"))

{

MessageBox.Show("Please create a license key first");

return;

}

var privateKey = File.ReadAllText(@"privateKey.xml");

var generator = new LicenseGenerator(privateKey);

var dictionary = new Dictionary<string, string>();

// generate the license

var license = generator.Generate("EasyLicense", Guid.NewGuid(), DateTime.UtcNow.AddYears(1), dictionary,

LicenseType.Standard);

txtLicense.Text = license;

File.WriteAllText("license.lic", license);

3: Use public key to validate the license

private static void ValidateLicense()

{

if (!File.Exists("publicKey.xml"))

{

MessageBox.Show("Please create a license key first");

return;

}

var publicKey = File.ReadAllText(@"publicKey.xml");

var validator = new LicenseValidator(publicKey, @"license.lic");

try

{

validator.AssertValidLicense();

}

catch (Exception ex)

{

Console.WriteLine(ex.Message);

}

EasyLicense 内部有一个叫 LicenseTool 的工具，你可以下载源代码，运行，来看看它是怎样的创建Key，创建Licens 和验证License 的。

并且系统还有一个Demo 的项目，可以帮助你。

本文转自lzwxx 51CTO博客，原文链接:http://blog.51cto.com/13064681/1944337