初始化项目

AUTS_Server/Service/EncryptionService.cs

@@ -0,0 +1,68 @@
+using Microsoft.AspNetCore.Mvc;
+using OtpNet;
+using System.Text;
+using XSystem.Security.Cryptography;
+
+namespace AUTS_Server.Service
+{
+    public class EncryptionService : IEncryptionService
+    {
+        public string BuildTotpUri(string secret, string user, string issuer)
+        {
+            var issuerParameter = string.IsNullOrEmpty(issuer) ? "" : $"&issuer={Uri.EscapeDataString(issuer)}";
+            return $"otpauth://totp/{Uri.EscapeDataString(user)}?secret={secret}{issuerParameter}&algorithm=SHA1&digits=6&period=30";
+        }
+
+        public string Encrypt(string str)
+        {
+            MD5CryptoServiceProvider md5CryptoServiceProvider = new MD5CryptoServiceProvider();
+            byte[] array = md5CryptoServiceProvider.ComputeHash(Encoding.Default.GetBytes(str));
+            StringBuilder stringBuilder = new StringBuilder();
+            foreach (byte b in array)
+            {
+                stringBuilder.Append(b.ToString("x2"));
+            }
+            return stringBuilder.ToString().ToUpper();
+        }
+
+        public GenerateKeyinfo GenerateKey()
+        {
+            GenerateKeyinfo generateKeyinfo = new GenerateKeyinfo();
+            var key = KeyGeneration.GenerateRandomKey(20);
+            string base32Secret = Base32Encoding.ToString(key);
+            var issuer = "AUTS";
+            var userAccount = "new.uts-data.com";
+            string totpSetupUrl = BuildTotpUri(base32Secret, userAccount, issuer);
+            generateKeyinfo.SecretKey = base32Secret;
+            generateKeyinfo.QrCodeSetupUrl = totpSetupUrl;
+            return generateKeyinfo;
+            // 返回密钥和二维码URL
+            //return Ok(new { SecretKey = base32Secret, QrCodeSetupUrl = totpSetupUrl });
+        }
+
+        public bool VerifyTOTP(VerifyTOTPRequest request)
+        {
+            var key = Base32Encoding.ToBytes(request.SecretKey);
+            long timeStepMatched;
+            var totp = new Totp(key);
+            var TotpCode = "";
+            bool isValid = totp.VerifyTotp(TotpCode, out timeStepMatched, new VerificationWindow(2, 2));
+
+            if (isValid)
+            {
+                // 验证成功
+                return true;
+            }
+            else
+            {
+                // 验证失;
+                return false;
+            }
+        }
+    }
+    public class GenerateKeyinfo
+    {
+        public string SecretKey { get; set; }
+        public string QrCodeSetupUrl { get; set; }
+    }
+}