更新

KeyGen/LicenseManager.cs

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+using System.Text;
+
+namespace KeyGen
+{
+    internal class LicenseManager
+    {
+        // 【重要】替换为你生成的公钥
+        public static string PublicKey = @"<RSAKeyValue><Modulus>rd5+EjU6QxaTY/AalU9g6ugAquN0ahJSgeahnf2CrfvUAWFNJ+SH7Qr0RcvOTyAbWfvLWoBDACKaPsg+8nRQcO3EZdFyjJ9oycLNrw38+gSB2+/79Axys/8MHtSXVUw9WN2e9LxeHOQGtcaoSsp+bPGaXswthovQ2CkvBTmCokcAOX6UaR7Av4npaXyEoGCUsZLEiSydMsNbQ+wLsumVg1H2o/cpkO0s4DiJHoF66zUuxA+pYSjSCn5KTUsOemf+gBsob6Sw+7WOToyiOkMdO9Op6esf8yL7DJ1Yd40XaKd5IeLQmEX/b+n1EV2JEkGO0p9q9MQRp6NrEc9LvfMJWQ==</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
+
+        private static string RegPath = @$"Software\{Assembly.GetExecutingAssembly().GetName()}\License";
+        /// <summary>
+        /// 校验结果枚举
+        /// </summary>
+        public enum AuthStatus { Valid, Expired, HardwareMismatch, TimeTampered, InvalidSignature, NoLicense }
+        /// <summary>
+        /// 核心验证方法
+        /// </summary>
+        public static (AuthStatus status, string msg) Validate()
+        {
+            string licenseKey = LoadReg("Key");
+            if (string.IsNullOrEmpty(licenseKey)) return (AuthStatus.NoLicense, "未激活");
+
+            try
+            {
+                // 格式：签名|机器码|发码日期|过期日期
+                var parts = licenseKey.Split('|');
+                if (parts.Length != 4) return (AuthStatus.InvalidSignature, "授权格式错误");
+
+                string signature = parts[0];
+                string mCode = parts[1];
+                string issueDateStr = parts[2];
+                string expiryDateStr = parts[3];
+
+                // 1. 硬件校验
+                if (mCode != HardwareInfo.GetMachineCode())
+                    return (AuthStatus.HardwareMismatch, "机器码不匹配，请联系管理员");
+
+                // 2. RSA 签名校验 (防止篡改日期)
+                string dataVerify = $"{mCode}|{issueDateStr}|{expiryDateStr}";
+                if (!VerifyRSA(dataVerify, signature))
+                    return (AuthStatus.InvalidSignature, "非法授权 (签名无效)");
+
+                // 3. 时间逻辑校验
+                DateTime issueDate = DateTime.ParseExact(issueDateStr, "yyyyMMdd", null);
+                DateTime expiryDate = DateTime.ParseExact(expiryDateStr, "yyyyMMdd", null);
+                DateTime now = TimeHelper.GetTrustedTime(); // 获取可信时间
+
+                // 3.1 检查是否早于发码日期 (防极度回滚)
+                if (now < issueDate)
+                    return (AuthStatus.TimeTampered, "系统时间异常：早于授权发码时间");
+
+                // 3.2 检查上次运行记录 T (防短期回滚)
+                long lastRunTicks = 0;
+                long.TryParse(LoadReg("T"), out lastRunTicks);
+                if (lastRunTicks > 0)
+                {
+                    DateTime lastRun = new DateTime(lastRunTicks);
+                    // 允许1小时的误差
+                    if (now < lastRun.AddHours(-1))
+                        return (AuthStatus.TimeTampered, "系统时间异常：检测到时间倒流");
+                }
+
+                // 3.3 检查过期
+                if (now.Date > expiryDate.Date)
+                    return (AuthStatus.Expired, $"授权已于 {expiryDate:yyyy-MM-dd} 到期");
+
+                // --- 验证通过 ---
+                SaveReg("T", now.Ticks.ToString()); // 更新痕迹
+                return (AuthStatus.Valid, $"授权有效，到期时间为{expiryDate:yyyy-MM-dd}");
+            }
+            catch
+            {
+                return (AuthStatus.InvalidSignature, "授权解析异常");
+            }
+        }
+
+        // 保存激活码
+        public static void Activate(string keyInput)
+        {
+            SaveReg("Key", keyInput);
+        }
+
+        // RSA 验签辅助
+        private static bool VerifyRSA(string data, string signature)
+        {
+            try
+            {
+                using (var rsa = new RSACryptoServiceProvider())
+                {
+                    rsa.FromXmlString(PublicKey);
+                    var formatter = new RSAPKCS1SignatureDeformatter(rsa);
+                    formatter.SetHashAlgorithm("SHA256");
+                    byte[] dataBytes = Encoding.UTF8.GetBytes(data);
+                    byte[] signBytes = Convert.FromBase64String(signature);
+                    using (var sha = SHA256.Create())
+                    {
+                        return formatter.VerifySignature(sha.ComputeHash(dataBytes), signBytes);
+                    }
+                }
+            }
+            catch { return false; }
+        }
+
+        #region 注册表底层
+        private static void SaveReg(string key, string val)
+        {
+            using (var r = Registry.CurrentUser.CreateSubKey(RegPath)) r.SetValue(key, val);
+        }
+        private static string LoadReg(string key)
+        {
+            using (var r = Registry.CurrentUser.OpenSubKey(RegPath)) return r?.GetValue(key)?.ToString();
+        }
+        public static void RemoveLicense()
+        {
+            using (var r = Registry.CurrentUser.OpenSubKey(RegPath, true)) r?.DeleteValue("Key", false);
+        }
+        #endregion
+    }
+}

KeyGen/TimeHelper.cs

@@ -0,0 +1,46 @@
+using System.Windows.Shapes;
+
+namespace KeyGen
+{
+    internal static class TimeHelper
+    {
+        public static DateTime GetTrustedTime()
+        {
+            // 1. 尝试网络时间 (3秒超时)
+            try
+            {
+                var request = WebRequest.Create("http://www.baidu.com"); // 或 microsoft.com
+                request.Method = "HEAD";
+                request.Timeout = 3000;
+                using (var response = request.GetResponse())
+                {
+                    string dateStr = response.Headers["Date"];
+                    if (DateTime.TryParseExact(dateStr, "ddd, dd MMM yyyy HH:mm:ss 'GMT'",
+                            CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal, out DateTime netTime))
+                        return netTime.ToLocalTime();
+                }
+            }
+            catch { }
+
+            // 2. 尝试文件系统痕迹校验 (防断网改时间)
+            DateTime localNow = DateTime.Now;
+            try
+            {
+                // 获取系统目录和临时目录的最后修改时间
+                DateTime t1 = new DirectoryInfo(Environment.SystemDirectory).LastWriteTime;
+                DateTime t2 = new DirectoryInfo(Path.GetTempPath()).LastWriteTime;
+                DateTime latestFileTime = t1 > t2 ? t1 : t2;
+
+                // 如果本地时间比系统文件时间还要早超过24小时，判定为作弊
+                if (localNow < latestFileTime.AddHours(-24))
+                {
+                    return latestFileTime; // 强制使用文件时间
+                }
+            }
+            catch { }
+
+            // 3. 兜底
+            return localNow;
+        }
+    }
+}