Recently, when releasing Unity projects, we have to consider the issue of encryption for Unity, but there are few articles about this. Most people recommend using the System.Management class in C#. Although Unity3d supports the .net3.5 architecture, not all functions are available. All are supported, and the System.Management class is one of them. This class can run very well in VS, but it is not supported in the Unity framework. Therefore, I bypassed the System.Management management class during the encryption process. Here, through Unity Call cmd to obtain the ProcessorID, and then perform encryption and decryption through the System.Security.Cryptography encryption algorithm class in C#. After some twists and turns, the test was finally successful and I would like to share it with you here.
It is mainly divided into three major steps to complete:
1. VS creates Windows form applications, develops and generates license file projects
The first step is to complete the development of the License generator and obtain an authorized License.lic file from this project.
2.VS creates class library .Net Framework application and develops and generates .dll class library project
The second step mainly completes the functions of obtaining ProcessorID and License verification.
3. Create a Uinty project, reference .dll development, and implement the License authorization function
This step mainly completes the logical development of the Unity project authorization, and determines whether to enter the project through the authorization verification of the License.
1. VS creates a Windows Forms application and generates a License project
1.1License file generator code
//---------------------------
//@Author GarFey
//@date 20190612
//@version 1.0
//---------------------------
using System;
using System.Windows.Forms;
using System.IO;
using System.Security.Cryptography;
using System.Management;
namespace LicenesCreater
{
public partial class 许可证生产器 : Form
{
private string key = "GarFey201906101620MA124EAAfeTud00CtDpoQwnvmmStsitSwtsitloxigpxnDPPdSod";
private string iv = "LeadVR20190610GarFeyCreatPrivatekeyQe90QPlcMA124EA";
public 许可证生产器()
{
InitializeComponent();
}
///
/// 数据加密 序列化
///
///
///
///
///
private string encrption(string input, string key, string iv)
{
MemoryStream msEncrypt = null;//读写内存
RijndaelManaged aesAlg = null;//加密算法类
string sresult = string.Empty;
try
{
byte[] keys = System.Text.Encoding.UTF8.GetBytes(key);
byte[] ivs = System.Text.Encoding.UTF8.GetBytes(iv);
aesAlg = new RijndaelManaged();//加密算法类实例化
aesAlg.Key = keys;
aesAlg.IV = ivs;
ICryptoTransform ict = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);//加密转换接口类
msEncrypt = new MemoryStream();//读写内存类实例化
using (CryptoStream cts = new CryptoStream(msEncrypt, ict, CryptoStreamMode.Write))
{
using (StreamWriter sw = new StreamWriter(cts))
{
sw.Write(input);
}
}
}
finally
{
if (aesAlg != null)
{
//aesAlg.Dispose();
aesAlg.Clear();
}
}
if (msEncrypt != null)
{
byte[] content = msEncrypt.ToArray();
sresult = Convert.ToBase64String(content);
}
return sresult;
}
///
/// 数据解密 反序列化
///
///
///
///
///
private string decrption(string input, string key, string iv)
{
string sresult = string.Empty;
byte[] keys = System.Text.Encoding.UTF8.GetBytes(key);
byte[] ivs = System.Text.Encoding.UTF8.GetBytes(iv);
byte[] inputbytes = Convert.FromBase64String(input);
RijndaelManaged rm = null;
try
{
rm = new RijndaelManaged();
rm.Key = keys;
rm.IV = ivs;
ICryptoTransform ict = rm.CreateDecryptor(rm.Key, rm.IV);
using (MemoryStream ms = new MemoryStream(inputbytes))
{
using (CryptoStream cs = new CryptoStream(ms, ict, CryptoStreamMode.Read))
{
using (StreamReader sr = new StreamReader(cs))
{
sresult = sr.ReadToEnd();
}
}
}
}
finally
{
if (rm != null)
{
//rm.Dispose();
rm.Clear();
}
}
return sresult;
}
private bool IsInTimeInterval(DateTime time, DateTime startTime, DateTime endTime)
{
//判断时间段开始时间是否小于时间段结束时间，如果不是就交换
if (startTime > endTime)
{
DateTime tempTime = startTime;
startTime = endTime;
endTime = tempTime;
}
//获取以公元元年元旦日时间为基础的新判断时间
DateTime newTime = new DateTime();
newTime = time;
//获取以公元元年元旦日时间为基础的区间开始时间
DateTime newStartTime = new DateTime();
newStartTime = startTime;
//获取以公元元年元旦日时间为基础的区间结束时间
DateTime newEndTime = new DateTime();
newEndTime = endTime;
if (newTime >= newStartTime && newTime < newEndTime)
{
return true;
}
return false;
}
private void curCpuId_TextChanged(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
System.Management.ManagementClass mc = new ManagementClass("win32_processor");
ManagementObjectCollection moc = mc.GetInstances();
String processorid = "";
foreach (ManagementObject mo in moc)
{
processorid = mo["processorid"].ToString();
//MessageBox.Show(mo["processorid"].ToString());
break;
}
this.textBox1.Text = processorid;
string text = encrption(this.textBox1.Text, key.Substring(0, 32), iv.Substring(0, 16));
this.textBox2.Text = text;
using (FileStream fs = new FileStream("cuteeditor.lic", FileMode.Create, FileAccess.Write, FileShare.None))
{
using (StreamWriter sw = new StreamWriter(fs))
{
// sw.Write("None;zh-cn;None;8H489467LS631834L;CuteEditor.Editor for asp.net is licensed.;1.6;5;51aspx.com;125.76.229.233;09/09/2099");
sw.Write(text);
}
Console.ReadLine();
}
}
private void button3_Click(object sender, EventArgs e)
{
System.Management.ManagementClass mc = new ManagementClass("win32_processor");
ManagementObjectCollection moc = mc.GetInstances();
string processorid = "";
string testext = "";
foreach (ManagementObject mo in moc)
{
processorid = mo["processorid"].ToString();
//MessageBox.Show(mo["processorid"].ToString());
using (FileStream fs = new FileStream("cuteeditor.lic", FileMode.Open, FileAccess.Read, FileShare.None))
{
using (StreamReader sr = new StreamReader(fs))
{
// sw.Write("None;zh-cn;None;8H489467LS631834L;CuteEditor.Editor for asp.net is licensed.;1.6;5;51aspx.com;125.76.229.233;09/09/2099");
testext = sr.ReadToEnd();
}
Console.ReadLine();
}
string text = decrption(testext, key.Substring(0, 32), iv.Substring(0, 16));
this.textBox3.Text = text;
if (text == processorid)
{
MessageBox.Show("许可证文件正确");
}
else
{
MessageBox.Show("许可证文件不正确 LicInfo:"+ text);
}
}
}
private void button1_Click(object sender, EventArgs e)
{
string text = encrption(this.textBox4.Text, key.Substring(0, 32), iv.Substring(0, 16));
this.textBox5.Text = text;
DateTime date01 = dateTimePicker1.Value;
DateTime date02 = dateTimePicker2.Value;
string date1 = string.Format("{0:yyyy}-" + "{0:MM}-" + "{0:dd}", date01);
string date2 = string.Format("{0:yyyy}-" + "{0:MM}-" + "{0:dd}", date02);
string date1changed = encrption(date1, key.Substring(0, 32), iv.Substring(0, 16));
string date2changed = encrption(date2, key.Substring(0, 32), iv.Substring(0, 16));
System.DateTime currentTime = new System.DateTime();
currentTime = System.DateTime.Now;
if (IsInTimeInterval(currentTime, date01, date02) == true)
{
MessageBox.Show("在授权期限内");
}
else
{
MessageBox.Show("不在授权期限内");
}
//MessageBox.Show(date1);
using (FileStream fs = new FileStream("License.lic", FileMode.Create, FileAccess.Write, FileShare.None))
{
using (StreamWriter sw = new StreamWriter(fs))
{
// sw.Write("None;zh-cn;None;8H489467LS631834L;CuteEditor.Editor for asp.net is licensed.;1.6;5;51aspx.com;125.76.229.233;09/09/2099");
sw.WriteLine("Copyright (c) [本软件授权使用期限：" + date1 + "--" + date2 + "] [本软件由XXXX有限公司开发]");
sw.WriteLine("XXXX 软件许可协议（OEM/IHV/ISV 分销和单个用户）");
sw.WriteLine("重要通知 － 在复制、安装或使用之前，请先仔细阅读。");
sw.WriteLine("只有在仔细阅读下面的条款之后，方可使用或装载本软件及相关材料（总称为“软件”）。装载或使用本“软件”，即表明您同意本“协议”的条款。如果您不同意本“协议”的条款，请不要安装或使用本“软件”。");
sw.WriteLine("此外，还请注意：");
sw.WriteLine("* 如果您是原始设备制造商 (OEM)、独立硬件销售商 (IHV)，或独立软件供应商 (ISV)，本“许可协议”的所有内容对您适用。");
sw.WriteLine("* 如果您是最终用户，则只有附件一，即“XXXX 软件许可协议”对您适用。");
sw.WriteLine("对于 OEM、IHV 和 ISV：");
sw.WriteLine("许可：这一“软件”仅许可用来与 XXXX 组件产品结合使用。本“协议”不授予将此“软件”和其它非 XXXX 组件产品结合使用的许可。受本“协议”条款的约束，XXXX 公司据其版权授予您下述非专有、不可转让、全球性和完全付清的许可：");
sw.WriteLine("1. 为您本身的开发和维护目的而内部使用、改动和复制“软件”；并且");
sw.WriteLine("2. 更改、复制并向您的最终用户分销“软件”，包括本“软件”的衍生产品，条件是，这种分发必须按照一项许可协议进行，其条款至少要象下面所附的附件一，即 XXXX 公司最终、单个用户“许可协议”中所包含的条款一样严格，以及");
sw.WriteLine("3. 更改、复制和分销随“软件”所附的最终用户说明文件，但只能和“软件”一起分发。");
sw.WriteLine("");
sw.WriteLine("如果您不是装有本“软件”的计算机系统或软件程序的最终制造商或销售商，那么，您可以转让本“软件”的一份副本，包括本“软件”的衍生产品（和有关的最终用户说明文件）给您的接收者，按本“协议”的条款供其使用，条件是，该接收者必须同意完全接受本“协议”条款的约束。您将不得转让、分让或租让许可或以任何其它方式将本“软件”转移或透露给任何第三者。您将不得分解编码、拆散本“软件”或对其进行逆向工程设计。");
sw.WriteLine("除本“协议”中明确规定者以外，没有通过任何直接的、隐含的、推理的、禁止反悔的或其它方式授予贵方任何许可或权利。XXXX 公司将有权检查或经由独立审计人检查贵方的有关记录，以证实贵方是否遵守本“协议”的条款。");
sw.WriteLine("保密：如果贵方希望由第三方咨询机构或转包人（“承包人”）代贵方从事一些需要接触和使用本“软件”的工作，贵方必须从承包人处获得书面保密协议，其条款和接触使用本“软件”所涉及的责任至少应和本“协议”的条款一样严格，并规定承包人不得分发本“软件”或将之用于任何其它目的。除此之外，贵方不得透露签署过本“协议”或其中的条款，未经 XXXX 公司的书面同意，也不得在任何出版物、广告或其它公告中使用 XXXX 公司的名称。贵方没有任何权利使用 XXXX 公司的任何商标或标识。");
sw.WriteLine("软件的所有权和版权：本“软件”所有副本的所有权归 XXXX 公司或其供应商所有。本“软件”具有版权，并受到美国和其它国家法律以及国际条约条款的保护。您不得从本“软件”上删除任何版权通知。XXXX 公司可随时改变本“软件”或其中述及的项目，恕不另行通知，但是，XXXX 公司没有义务支持本“软件”或对其进行更新。除非另有明确规定，XXXX 公司未以任何明确的或隐含的方式授予贵方任何其拥有的专利、版权、商标或其它知识产权方面的权利。只有在接收者同意完全接受这些条款的约束且贵方不保留“软件”副本的前提下，您才能转让本“软件”。");
sw.WriteLine("有限的媒体品质保证：如果本“软件”由 XXXX 公司以实物媒体递交，XXXX 公司保证自该媒体交递之日起九十 (90) 天内没有材料和实物上的缺陷。如果出现这样的缺陷，请将有缺陷的媒体退还 XXXX 公司进行更换，XXXX 公司也可能选择以另外的途径递交该“软件”。");
sw.WriteLine("不包括任何其它保证：除上述保证之外，本“软件”是按其“现状”而提供的，没有任何其它明确或隐含的保证，包括适销性、非侵权性或适用于某一特定用途的保证。XXXX 公司对本“软件”中包括的任何信息、文字、图形、链接或其它项目的精确性或完整性不作担保，也不承担责任。");
sw.WriteLine("有限责任：对于因使用或无法使用本“软件”所造成的任何损失（包括但并不限于利润损失、业务中断或信息丢失等），无论在何种情况下，即使 XXXX 公司已被事先通知可能会出现这样的损失，XXXX 公司及其供应商均不承担任何责任。有些法律管区禁止排除或限制隐含保证或后果性、事故性损失的责任，因此，上述限制可能对您不适用。随法律管区的不同，您还可能拥有其它法定权利。");
sw.WriteLine("本协议的终止：如果您违反“协议”的条款，XXXX 公司则可随时终止本“协议”。协议终止时，您应该立即销毁本“软件”或将“软件”的所有副本退还 XXXX 公司。");
sw.WriteLine("适用的法律：因本“协议”而产生的索赔将接受加利福尼亚州法律的管辖，但不受其法律冲突原则的约束。本“协议”将不受《联合国国际货物销售合同公约》的约束。您不得违反适用的出口法规而将本“软件”出口国外。XXXX 公司不承担任何其它协议的责任，除非这些协议为书面协议并经过 XXXX 公司的授权代表签署。");
sw.WriteLine("政府机构有限的权利：本“软件”是以“有限的权利”而提供的。政府机构使用、复制或透露本“软件”应受到 FAR52.227-14 和 DFAR252.227-7013 及其承续法的限制。政府机构使用本“软件”即表明其承认 XXXX 公司对“软件”的所有权权利。承包商或制造商为：XXXX Corporation, 2200 Mission College Blvd., Santa Clara, CA 95052 USA。");
sw.WriteLine("");
sw.WriteLine("附件一");
sw.WriteLine("XXXX 软件许可协议（最终、单个用户）");
sw.WriteLine("重要通知 － 在复制、安装或使用之前，请先仔细阅读。");
sw.WriteLine("只有在仔细阅读下面的条款之后，方可使用或装载本软件及相关材料（总称为“软件”）。装载或使用本“软件”，即表明您同意本“协议”的条款。如果您不同意本“协议”的条款，请不要安装或使用本“软件”。");
sw.WriteLine("许可：您可将本“软件”复制到一台计算机上供非商业性的个人使用，并可复制一份本“软件”的备份。上述使用和备份受以下条款的约束：");
sw.WriteLine("1. 这一“软件”仅许可用来与 XXXX 组件产品结合使用。本“协议”不授予将此“软件”和其它非 XXXX 组件产品结合使用的许可。");
sw.WriteLine("2. 除本“协议”中规定者之外，您不得复制、改变、出租、出售、分发或转让本“软件”的任何部分，您并且同意防止他人未经授权而复制本“软件”。");
sw.WriteLine("3. 您不得分解编码、拆散本“软件”或对其进行逆向工程设计。");
sw.WriteLine("4. 您不得分让或允许同时有一个以上的用户使用本“软件”。");
sw.WriteLine("5. 本“软件”可能含有第三方供应商的软件或其它财产，其中有些可能已经在随附的“license.txt”或其它文本或文件中注明并根据这些文件而获得许可。");
sw.WriteLine("软件的所有权和版权：本“软件”所有副本的所有权归 XXXX 公司或其供应商所有。本“软件”具有版权，并受到美国和其它国家法律以及国际条约条款的保护。您不得从本“软件”上删除任何版权通知。XXXX 公司可随时改变本“软件”或其中述及的项目，恕不另行通知，但是，XXXX 公司没有义务支持本“软件”或对其进行更新。除非另有明确规定，XXXX 公司未以任何明确的或隐含的方式授予贵方任何其拥有的专利、版权、商标或其它知识产权方面的权利。只有在接收者同意完全接受这些条款的约束且贵方不保留“软件”副本的前提下，您才能转让本“软件”。");
sw.WriteLine("有限的媒体品质保证：如果本“软件”由 XXXX 公司以实物媒体交递，XXXX 公司保证自该媒体交递之日起九十 (90) 天内没有材料和实物上的缺陷。如果出现这样的缺陷，请将有缺陷的媒体退还 XXXX 公司进行更换，XXXX 公司也可能选择以另外的途径交递该“软件”。");
sw.WriteLine("不包括任何其它保证：除上述保证之外，本“软件”是按其“现状”而提供的，没有任何其它明确或隐含的保证，包括适销性、非侵权性或适用于某一特定用途的保证。XXXX 公司对本“软件”中包括的任何信息、文字、图形、链接或其它项目的精确性或完整性不作担保，也不承担责任。");
sw.WriteLine("有限责任：对于因使用或无法使用本“软件”所造成的任何损失（包括但并不限于利润损失、业务中断或信息丢失等），无论在何种情况下，即使 XXXX 公司已被事先通知可能会出现这样的损失，XXXX 公司及其供应商均不承担任何责任。有些法律管区禁止排除或限制隐含保证或后果性、事故性损失的责任，因此，上述限制可能对您不适用。随法律管区的不同，您还可能拥有其它法定权利。");
sw.WriteLine("本协议的终止：如果您违反本“协议”的条款，XXXX 公司则可随时终止本“协议”。“协议”终止时，您应该立即销毁本“软件”或将“软件”的所有副本退还 XXXX 公司。");
sw.WriteLine("适用的法律：因本“协议”而产生的索赔将中华人民共和国法律的管辖，但不受其法律冲突原则的约束。本“协议”将不受《联合国国际货物销售合同公约》的约束。您不得违反适用的出口法规而将本“软件”出口国外。XXXX 公司不承担任何其它协议的责任，除非这些协议为书面协议并经过 XXXX 公司的授权代表签署。");
sw.WriteLine("政府机构有限的权利：本“软件”是以“有限的权利”而提供的。政府机构使用、复制或透露本“软件”受到 FAR52.227-14 和 DFAR252.227-7013 及其承续法的限制。政府机构使用本“软件”即表明其承认 XXXX 公司对“软件”的所有权权利。承包商或制造商为：XXXX Corporation, 2200 Mission College Blvd., Santa Clara, CA 95052 USA。SLAOEMISV1/RBK/01-21-00");
sw.WriteLine("INCREMENT jackDataManagerbase ugslmd 7.0 15caugc2013 100 SUPERSEDE");
sw.WriteLine("DUPDataManagerGROUP=UHD ISSUED=10caprc2013 ck=197 SIGN=13E6 6CA8 B322");
sw.WriteLine("vwViht2lF5ylrm86DcwjI2bO/T7msUGMdslcgEH+EqY=cMKidern7PkegIelOLyYycxcA");
sw.WriteLine("");
sw.WriteLine(date1changed);
sw.WriteLine("");
sw.WriteLine(date2changed);
sw.WriteLine("0CED 1E9E 40C4 F4C5 11EF 2257 024B 2F89 F32F C5E0 A8B5");
sw.WriteLine("404E F48C A0E0");
sw.WriteLine("INCREMENT jackDataManagermocap ugslmd 7.0 15caugc2013 100 SUPERSEDE");
sw.WriteLine("DUPDataManagerGROUP=UHD ISSUED=10caprc2013 ck=213 SIGN=0E14 0B08 72EE");
sw.WriteLine("vwVihs2oF6ylpm8mDcwAI2bO/T7qsUGMdGupgEH+EvY=cqGcMKlk3gvcOIlOLyllYycA");
sw.WriteLine("");
sw.WriteLine(date1changed);
sw.WriteLine("");
sw.WriteLine(date2changed);
sw.WriteLine("17C0 A842 8C45 589D 0DFE 4AD5 BC98 5477 6119 14BE 44A6 43BC");
sw.WriteLine("F203 A4D9 E7B8");
sw.WriteLine("INCREMENT jackDataManageropt ugslmd 7.0 15caugc2013 100 SUPERSEDE DUPDataManagerGROUP=UHD");
sw.WriteLine("ISSUED=10caprc2013 ck=153 SIGN=1A92 02DD 4141 8368 E567 8A7F");
sw.WriteLine("vwVtht2oF5ydrmsmDcwAj2bO/T7qbUGMdGuqgEH+EgY=7PH7k3OIfhlOjhdfPLyYycA");
sw.WriteLine("");
sw.WriteLine(date1changed);
sw.WriteLine("");
sw.WriteLine(date2changed);
sw.WriteLine("1126 FC56 F296 8EA7 E581 3F14 9010 A358 842F A95C DF78 1F41");
sw.WriteLine("INCREMENT jackDataManagertat ugslmd 7.0 15caugc2013 100 SUPERSEDE DUPDataManagerGROUP=UHD");
sw.WriteLine("ISSUED=10caprc2013 ck=246 SIGN=0530 5C25 E534 748D 8C6D 18B4");
sw.WriteLine(text + "7PH7k3OI46lOjhdffsPLyYycA");
sw.WriteLine("");
sw.WriteLine(date1changed);
sw.WriteLine("");
sw.WriteLine(date2changed);
sw.WriteLine("F771 BEE5 2B9B B401 9B68 7CAD AC16 748F 366F 5536 E8BF 7067");
sw.WriteLine("INCREMENT jackDataManagertoolkit ugslmd 7.0 15caugc2013 100 SUPERSEDE");
sw.WriteLine("DUPDataManagerGROUP=UHD ISSUED=10caprc2013 ck=146 SIGN=02F5 0DD5 E558");
sw.WriteLine("vwViht0oF5ylrw8mDcwAI2zO/T7fsUHMdGuzgEH-EqY=l7k3OIlshhOnmjkgPLyYycA");
sw.WriteLine("");
sw.WriteLine(date1changed);
sw.WriteLine("");
sw.WriteLine(date2changed);
sw.WriteLine("1F86 4E64 35B5 0A4E 597E 78B0 0A28 A0C9 644B E5D8 1F80 94FA");
sw.WriteLine("DFFA A6AE BEF4");
sw.WriteLine("FEATURE serverDataManagerid ugslmd 7.0 permanent 1 VENDORDataManagerSTRING=IN04102013 c");
sw.WriteLine("SIEMENS PLM SOFTWA userDataManagerinfo=3TLFWAM3CP ISSUER=SIEMENS ck=175");
sw.WriteLine("SIGN=116C 3E2A 6874 5E61 97B9 9942 5EED 2661 A20C 690E F60D");
sw.WriteLine("F803 C42E 47E9 D6E1 0005 7F17 3AB3 5EA7 68FD 2D8C 81AD 171D");
}
Console.ReadLine();
}
}
private void button4_Click(object sender, EventArgs e)
{
System.Management.ManagementClass mc = new ManagementClass("win32_processor");
ManagementObjectCollection moc = mc.GetInstances();
string processorid = "";
string testext = "";
foreach (ManagementObject mo in moc)
{
processorid = mo["processorid"].ToString();
//MessageBox.Show(mo["processorid"].ToString());
using (FileStream fs = new FileStream("License.lic", FileMode.Open, FileAccess.Read, FileShare.None))
{
int iXH = 0;
using (StreamReader sr = new StreamReader(fs))
{
string line = sr.ReadLine();
while ((line = sr.ReadLine()) != null)
{
//这里的Line就是您要的的数据了
iXH++;//计数,总共几行
line = sr.ReadLine();
if (!string.IsNullOrEmpty(line))
{
line = line.Trim();
if (line.StartsWith("ISSUED=10caprc2013 ck=246 SIGN=0530 5C25 E534 748D 8C6D 18B4"))
{
line = sr.ReadLine().Substring(0, 44);
string text = decrption(line, key.Substring(0, 32), iv.Substring(0, 16));
this.textBox6.Text = text;
if (text == this.textBox4.Text)
{
line = sr.ReadLine();
line = sr.ReadLine();
string date001 = decrption(line, key.Substring(0, 32), iv.Substring(0, 16));
//MessageBox.Show(date001);
line = sr.ReadLine();
line = sr.ReadLine();
string date002 = decrption(line, key.Substring(0, 32), iv.Substring(0, 16));
//MessageBox.Show(date002);
System.DateTime currentTime = new System.DateTime();
currentTime = System.DateTime.Now;
string[] s1 = date001.Split(new char[] { '-' });
string[] s2 = date002.Split(new char[] { '-' });
int date01year = Int32.Parse(s1[0]);
int date02year = Int32.Parse(s2[0]);
int date01month = Int32.Parse(s1[1]);
int date02month = Int32.Parse(s2[1]);
int date01day = Int32.Parse(s1[2]);
int date02day = Int32.Parse(s2[2]);
DateTime date01 = new DateTime(date01year, date01month, date01day);
DateTime date02 = new DateTime(date02year, date02month, date02day);
if (IsInTimeInterval(currentTime, date01, date02) == true)
{
MessageBox.Show("许可证文件正确，且在授权期限内");
}
else
{
MessageBox.Show("许可证文件已失时效");
}
}
else
{ MessageBox.Show("许可证文件非法！", "提示"); }
}
}
}
}
Console.ReadLine();
}
}
}
}
}The project runs to generate an executable file:
1.2License use
After starting the License Generator, you will see the following interface and click the Generate (Generator Authorization.lic) button
Wait a moment, the local cpu-id and license file source code will be generated, then follow the picture and copy the cpu-id to the cpu-id to be generated box below.
After copying, select the authorization date of the license.
After the selection is completed, click the Generate (License.lic) button, and the following prompt box will pop up, indicating that the generated file is complete and correct.
2. VS creates class library .Net Framework application and develops and generates .dll class library project
Dll project code
//---------------------------
//@Author GarFey
// @date 20190612
// @version 1.0
//---------------------------
using System;
using System.IO;
using System.Security.Cryptography;
namespace License
{
public class LicenesCheck
{
private string key = "GarFey201906101620MA124EAAfeTud00CtDpoQwnvmmStsitSwtsitloxigpxnDPPdSod";
private string iv = "LeadVR20190610GarFeyCreatPrivatekeyQe90QPlcMA124EA";
///
///
///
///
///
/// 0 许可证文件正确，且在授权期限内
/// 1 没有许可证文件
/// 2 许可证文件已失时效
/// 3 许可证文件非法！
///
public int Verification(string licPath)
{
try
{
string processorid = GetProcessorId();
string path = licPath + "/License/License.lic";
//WriteLog.Log("licpath == "+ path);
using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.None))
{
int iXH = 0;
using (StreamReader sr = new StreamReader(fs))
{
string line = sr.ReadLine();
while ((line = sr.ReadLine()) != null)
{
iXH++;//计数,总共几行
line = sr.ReadLine();
if (!string.IsNullOrEmpty(line))
{
line = line.Trim();
if (line.StartsWith("ISSUED=10caprc2013 ck=246 SIGN=0530 5C25 E534 748D 8C6D 18B4"))
{
line = sr.ReadLine().Substring(0, 44);
//WriteLog.Log("line "+ line);
string text = decrption(line, key.Substring(0, 32), iv.Substring(0, 16));
//WriteLog.Log("decrption text " + text);
if (text == processorid)
{
line = sr.ReadLine();
line = sr.ReadLine();
string date001 = decrption(line, key.Substring(0, 32), iv.Substring(0, 16));
line = sr.ReadLine();
line = sr.ReadLine();
string date002 = decrption(line, key.Substring(0, 32), iv.Substring(0, 16));
System.DateTime currentTime = new System.DateTime();
currentTime = System.DateTime.Now;
string[] s1 = date001.Split(new char[] { '-' });
string[] s2 = date002.Split(new char[] { '-' });
int date01year = Int32.Parse(s1[0]);
int date02year = Int32.Parse(s2[0]);
int date01month = Int32.Parse(s1[1]);
int date02month = Int32.Parse(s2[1]);
int date01day = Int32.Parse(s1[2]);
int date02day = Int32.Parse(s2[2]);
DateTime date01 = new DateTime(date01year, date01month, date01day);
DateTime date02 = new DateTime(date02year, date02month, date02day);
if (IsInTimeInterval(currentTime, date01, date02) == true)
{
return 0;//许可证文件正确，且在授权期限内
}
else
{
return 2;//许可证文件已失时效
}
}
else
{
return 3;//许可证文件非法！
}
}
}
}
}
Console.ReadLine();
}
}
catch(Exception e)
{
string errorStr = e.ToString();
//WriteLog.LogExcption("Exception:: License 获取警告" + errorStr);
if (errorStr.StartsWith("System.Security.Cryptography.CryptographicException: Invalid input block size."))
{
return 3;//许可证文件非法！
}
return 1; //没有许可证文件
}
return 4;
}
private bool IsInTimeInterval(DateTime time, DateTime startTime, DateTime endTime)
{
//判断时间段开始时间是否小于时间段结束时间，如果不是就交换
if (startTime > endTime)
{
DateTime tempTime = startTime;
startTime = endTime;
endTime = tempTime;
}
//获取以公元元年元旦日时间为基础的新判断时间
DateTime newTime = new DateTime();
newTime = time;
//获取以公元元年元旦日时间为基础的区间开始时间
DateTime newStartTime = new DateTime();
newStartTime = startTime;
//获取以公元元年元旦日时间为基础的区间结束时间
DateTime newEndTime = new DateTime();
newEndTime = endTime;
if (newTime >= newStartTime && newTime < newEndTime)
{
return true;
}
return false;
}
public string encrption(string input, string key, string iv)
{
MemoryStream msEncrypt = null;
RijndaelManaged aesAlg = null;
string sresult = string.Empty;
try
{
byte[] keys = System.Text.Encoding.UTF8.GetBytes(key);
byte[] ivs = System.Text.Encoding.UTF8.GetBytes(iv);
aesAlg = new RijndaelManaged();
aesAlg.Key = keys;
aesAlg.IV = ivs;
ICryptoTransform ict = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
msEncrypt = new MemoryStream();
using (CryptoStream cts = new CryptoStream(msEncrypt, ict, CryptoStreamMode.Write))
{
using (StreamWriter sw = new StreamWriter(cts))
{
sw.Write(input);
}
}
}
finally
{
if (aesAlg != null)
{
aesAlg.Clear();
}
}
if (msEncrypt != null)
{
byte[] content = msEncrypt.ToArray();
sresult = Convert.ToBase64String(content);
}
return sresult;
}
public string decrption(string input, string key, string iv)
{
string sresult = string.Empty;
byte[] keys = System.Text.Encoding.UTF8.GetBytes(key);
byte[] ivs = System.Text.Encoding.UTF8.GetBytes(iv);
byte[] inputbytes = Convert.FromBase64String(input);
RijndaelManaged rm = null;
try
{
rm = new RijndaelManaged();
rm.Key = keys;
rm.IV = ivs;
ICryptoTransform ict = rm.CreateDecryptor(rm.Key, rm.IV);
using (MemoryStream ms = new MemoryStream(inputbytes))
{
using (CryptoStream cs = new CryptoStream(ms, ict, CryptoStreamMode.Read))
{
using (StreamReader sr = new StreamReader(cs))
{
sresult = sr.ReadToEnd();
}
}
}
}
finally
{
if (rm != null)
{
rm.Clear();
}
}
return sresult;
}
///
/// 获取cpuid
///
///
public string GetProcessorId()
{
string processorid = "";
string outstr = RunCmdNoErr("wmic", " CPU get ProcessorID");
string cpuId = outstr.Replace("ProcessorId", "");
processorid = cpuId.Trim();
return processorid;
}
///
/// 构建Process对象，并执行
///
/// 命令
/// 命令的参数
/// 工作目录
/// Process对象
private System.Diagnostics.Process CreateCmdProcess(string cmd, string args, string workdir = null)
{
var pStartInfo = new System.Diagnostics.ProcessStartInfo(cmd);
pStartInfo.Arguments = args;
pStartInfo.CreateNoWindow = false;
pStartInfo.UseShellExecute = false;
pStartInfo.RedirectStandardError = true;
pStartInfo.RedirectStandardInput = true;
pStartInfo.RedirectStandardOutput = true;
pStartInfo.StandardErrorEncoding = System.Text.UTF8Encoding.UTF8;
pStartInfo.StandardOutputEncoding = System.Text.UTF8Encoding.UTF8;
if (!string.IsNullOrEmpty(workdir))
pStartInfo.WorkingDirectory = workdir;
return System.Diagnostics.Process.Start(pStartInfo);
}
///
/// 运行命令,不返回stderr版本
///
/// 命令
/// 命令的参数
/// 工作目录
/// 命令的stdout输出
private string RunCmdNoErr(string cmd, string args, string workingDri = "")
{
var p = CreateCmdProcess(cmd, args, workingDri);
var res = p.StandardOutput.ReadToEnd();
p.Close();
return res;
}
}
}After the project is run, the dll file is obtained:
3. Reference the dll in Unity for logic development
Unity side code:
//-----------------------------------------------
// @Author GarFey
// @date 20190612
// @version 1.0
//-----------------------------------------------
using UnityEngine;
using License;
using System;
using MsgBoxBase = System.Windows.Forms.MessageBox; //引用命名空间下消息类
using WinForms = System.Windows.Forms; //引用命名空间
public class Main : MonoBehaviour {
// Use this for initialization
void Start () {
licenseCheck();
}
void licenseCheck()
{
LicenesCheck lc = new LicenesCheck();
string licPath = Application.dataPath;
int isLicOk = lc.Verification(licPath);
Debug.Log("" + isLicOk);
switch (isLicOk)
{
/// 0 许可证文件正确，且在授权期限内
case 0:
Debug.Log("许可证文件正确，且在授权期限内");
break;
/// 1 没有许可证文件
case 1:
switch (MsgBoxBase.Show("没有找到许可证文件!", "提示", WinForms.MessageBoxButtons.OK, WinForms.MessageBoxIcon.Question))
{
case WinForms.DialogResult.OK:
case WinForms.DialogResult.Cancel:
print("quit");
quit();
break;
}
break;
/// 2 许可证文件已失时效
case 2:
switch (MsgBoxBase.Show("许可证文件已失时效!", "提示", WinForms.MessageBoxButtons.OK, WinForms.MessageBoxIcon.Warning))
{
case WinForms.DialogResult.OK:
case WinForms.DialogResult.Cancel:
print("quit");
quit();
break;
}
break;
break;
/// 3 许可证文件非法！
case 3:
switch (MsgBoxBase.Show("许可证文件非法！", "提示", WinForms.MessageBoxButtons.OK, WinForms.MessageBoxIcon.Error))
{
case WinForms.DialogResult.OK:
case WinForms.DialogResult.Cancel:
print("quit");
quit();
break;
}
break;
default:
quit();
break;
}
}
void quit()
{
Application.Quit();
}
}Running result display:
License verification is successful and the license file is correct
No License file
License file expired
Illegal (incorrect) License license file
Notice:
If there are errors when you compile here, make sure you have imported System.Windows.Forms.dll.
The blogger has a detailed explanation of how Unity calls the Windows pop-up box .