\ud604\ub300\uc758 \uc81c\uc870 \ud604\uc7a5\uc740 \ub370\uc774\ud130\uc640 \uc815\ubcf4\uc758 \uc5f0\uc18d\uc801\uc778 \ud750\ub984\uc774 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c C#\uc73c\ub85c \uac1c\ubc1c\ub41c \uc81c\uc870 \uc2e4\ud589 \uc2dc\uc2a4\ud15c(MES) \ubc0f \uc2a4\ub9c8\ud2b8 \ud329\ud1a0\ub9ac \uc194\ub8e8\uc158\uc740 \ubcf4\uc548\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4. \ubcf4\uc548\uc740 \uc548\uc804\ud55c \ub370\uc774\ud130 \ubcf4\ud638, \uc2dc\uc2a4\ud15c \ubb34\uacb0\uc131 \uc720\uc9c0, \uc0ac\uc6a9\uc790 \uc778\uc99d \ubc0f \uad8c\ud55c \uad00\ub9ac, \uadf8\ub9ac\uace0 \uc678\ubd80 \uacf5\uaca9\uc73c\ub85c\ubd80\ud130 \uc2dc\uc2a4\ud15c\uc744 \uc548\uc804\ud558\uac8c \ubcf4\ud638\ud558\ub294 \uac83\uc744 \ud3ec\ud568\ud569\ub2c8\ub2e4.<\/p>\n
\uacf5\uc7a5 \uc790\ub3d9\ud654 \uc2dc\uc2a4\ud15c\uc5d0 \ub300\ud55c \uacf5\uaca9\uc740 \uc81c\uc870 \ud504\ub85c\uc138\uc2a4\uc758 \uc911\ub2e8, \uae30\uacc4\uc758 \uace0\uc7a5, \ub370\uc774\ud130 \uc190\uc2e4 \ubc0f \uae30\uc5c5\uc758 \uc2e0\ub8b0\ub3c4\ub97c \ub5a8\uc5b4\ub728\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \ubcf4\uc548\uc740 \uc81c\uc870 \uae30\uc5c5\uc758 \uc9c0\uc18d \uac00\ub2a5\uc131\uacfc \uacbd\uc7c1\ub825\uc744 \ub192\uc774\ub294 \uc911\uc694\ud55c \uc694\uc18c\uc785\ub2c8\ub2e4.<\/p>\n
C#\uc740 .NET \ud504\ub808\uc784\uc6cc\ud06c\ub97c \ud1b5\ud574 \ub2e4\uc591\ud55c \ubcf4\uc548 \uae30\ub2a5\uc744 \uc81c\uacf5\ud558\uba70, \uc774\ub97c \ud65c\uc6a9\ud558\uc5ec \uacf5\uc7a5 \uc790\ub3d9\ud654 \uc2dc\uc2a4\ud15c\uc758 \ubcf4\uc548\uc131\uc744 \uac15\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc778\uc99d(Authentication) \ubc0f \uad8c\ud55c \ubd80\uc5ec(Authorization)\ub294 \uc2dc\uc2a4\ud15c\uc758 \ubcf4\uc548\uc5d0\uc11c \uac00\uc7a5 \uae30\ubcf8\uc801\uc778 \uc694\uad6c\uc0ac\ud56d\uc785\ub2c8\ub2e4. C#\uc5d0\uc11c\ub294 ASP.NET Identity \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ud1b5\ud574 \uc190\uc27d\uac8c \uc0ac\uc6a9\uc790 \uc778\uc99d \ubc0f \uad8c\ud55c \uad00\ub9ac \uc2dc\uc2a4\ud15c\uc744 \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
using Microsoft.AspNetCore.Identity;\n\n\/\/ \uc0ac\uc6a9\uc790 \ub4f1\ub85d\npublic async Task<IdentityResult> RegisterUserAsync(UserModel userModel)\n{\n var user = new ApplicationUser { UserName = userModel.Username, Email = userModel.Email };\n var result = await _userManager.CreateAsync(user, userModel.Password);\n return result;\n}\n\n\/\/ \uad8c\ud55c \ud655\uc778\npublic async Task<bool> IsUserAuthorizedAsync(string userId, string permission)\n{\n var userRoles = await _userManager.GetRolesAsync(userId);\n return userRoles.Contains(permission);\n}<\/code><\/pre>\n2.2 \ub370\uc774\ud130 \uc554\ud638\ud654<\/h4>\n
\uc2dc\uc2a4\ud15c \ub0b4\uc5d0\uc11c \uc804\uc1a1\ub418\uac70\ub098 \uc800\uc7a5\ub418\ub294 \ub370\uc774\ud130\ub294 \uacf5\uaca9\uc790\ub85c\ubd80\ud130 \ubcf4\ud638\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. C#\uc5d0\uc11c\ub294 Data Protection API<\/strong>\uc640 AES<\/strong> \uc54c\uace0\ub9ac\uc998\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130\ub97c \uc554\ud638\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\nusing System.Security.Cryptography;\nusing System.Text;\n\n\/\/ \ub370\uc774\ud130 \uc554\ud638\ud654\npublic static string EncryptString(string plainText, string key)\n{\n using (Aes aes = Aes.Create())\n {\n aes.Key = Encoding.UTF8.GetBytes(key);\n aes.GenerateIV();\n ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);\n\n using (MemoryStream ms = new MemoryStream())\n {\n ms.Write(aes.IV, 0, aes.IV.Length);\n\n using (CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))\n {\n using (StreamWriter sw = new StreamWriter(cs))\n {\n sw.Write(plainText);\n }\n\n return Convert.ToBase64String(ms.ToArray());\n }\n }\n }\n}\n\n\/\/ \ub370\uc774\ud130 \ubcf5\ud638\ud654\npublic static string DecryptString(string cipherText, string key)\n{\n using (Aes aes = Aes.Create())\n {\n aes.Key = Encoding.UTF8.GetBytes(key);\n byte[] fullCipher = Convert.FromBase64String(cipherText);\n byte[] iv = new byte[aes.BlockSize \/ 8];\n byte[] cipher = new byte[fullCipher.Length - iv.Length];\n \n Array.Copy(fullCipher, iv, iv.Length);\n Array.Copy(fullCipher, iv.Length, cipher, 0, cipher.Length);\n\n aes.IV = iv;\n ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);\n\n using (MemoryStream ms = new MemoryStream(cipher))\n {\n using (CryptoStream cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read))\n {\n using (StreamReader reader = new StreamReader(cs))\n {\n return reader.ReadToEnd();\n }\n }\n }\n }\n}<\/code><\/pre>\n2.3 \ub124\ud2b8\uc6cc\ud06c \ubcf4\uc548<\/h4>\n
\uacf5\uc7a5 \uc790\ub3d9\ud654 \uc2dc\uc2a4\ud15c\uc740 \ub124\ud2b8\uc6cc\ud06c\ub97c \ud1b5\ud574 \ub2e4\uc591\ud55c \uae30\uae30\uc640 \ub370\uc774\ud130\ub97c \uc1a1\uc218\uc2e0\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c HTTPS<\/strong> \ubc0f VPN<\/strong>\uc744 \uad6c\ud604\ud558\uc5ec \ub370\uc774\ud130 \uc804\uc1a1 \uc2dc \ubcf4\uc548\uc744 \uac15\ud654\ud574\uc57c \ud569\ub2c8\ub2e4. C#\uc5d0\uc11c\ub294 HttpClient<\/strong>\ub97c \uc0ac\uc6a9\ud558\uc5ec HTTPS\ub97c \ud1b5\ud574 \uc548\uc804\ud55c \ub370\uc774\ud130\ub97c \uc1a1\uc218\uc2e0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\nusing System.Net.Http;\n\n\/\/ \uc548\uc804\ud55c \ub370\uc774\ud130 \uc804\uc1a1\npublic async Task<string> GetDataAsync(string url)\n{\n using (var client = new HttpClient())\n {\n client.BaseAddress = new Uri(url);\n client.DefaultRequestHeaders.Accept.Clear();\n client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue(\"application\/json\"));\n\n var response = await client.GetAsync(\"\");\n if (response.IsSuccessStatusCode)\n {\n return await response.Content.ReadAsStringAsync();\n }\n return string.Empty;\n }\n}<\/code><\/pre>\n2.4 \uc2dc\uc2a4\ud15c \ubaa8\ub2c8\ud130\ub9c1 \ubc0f \ub85c\uadf8 \uad00\ub9ac<\/h4>\n
\uacf5\uc7a5 \uc790\ub3d9\ud654 \uc2dc\uc2a4\ud15c\uc758 \uc774\uc0c1 \uc9d5\ud6c4\ub97c \uc870\uae30\uc5d0 \ubc1c\uacac\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc2e4\uc2dc\uac04 \ubaa8\ub2c8\ud130\ub9c1\uacfc \ub85c\uadf8 \uad00\ub9ac\ub97c \uac15\ud654\ud574\uc57c \ud569\ub2c8\ub2e4. C#\uc5d0\uc11c\ub294 Serilog<\/strong>\uacfc \uac19\uc774 \ub2e4\uc591\ud55c \ub85c\uae45 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ud65c\uc6a9\ud558\uc5ec \ub85c\uadf8\ub97c \uae30\ub85d\ud558\uace0 \uc678\ubd80\uc758 \uce68\uc785\uc744 \ud0d0\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\nusing Serilog;\n\n\/\/ \ub85c\uadf8 \ucd08\uae30\ud654\nLog.Logger = new LoggerConfiguration()\n .WriteTo.File(\"logs\\\\log-.txt\", rollingInterval: RollingInterval.Day)\n .CreateLogger();\n\n\/\/ \ub85c\uadf8 \uae30\ub85d\npublic void LogInformation(string message)\n{\n Log.Information(message);\n}\n\n\/\/ \uc624\ub958 \ub85c\uadf8 \uae30\ub85d\npublic void LogError(string message)\n{\n Log.Error(message);\n}<\/code><\/pre>\n3. \ubcf4\uc548 \uc815\ucc45 \ubc0f \uc808\ucc28<\/h3>\n
\uc544\ubb34\ub9ac \uac15\ub825\ud55c \uae30\uc220\uc801 \uc870\uce58\ub97c \ucde8\ud558\ub354\ub77c\ub3c4, \uc870\uc9c1 \ub0b4\uc5d0\uc11c\uc758 \ubcf4\uc548 \uc778\uc2dd\uacfc \uc808\ucc28\uac00 \ubd80\uc871\ud558\ub2e4\uba74 \ubcf4\uc548\uc740 \uc2e4\ud328\ud560 \uac83\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc544\ub798\uc640 \uac19\uc740 \ubcf4\uc548 \uc815\ucc45 \uc218\ub9bd\uc774 \ud544\uc694\ud569\ub2c8\ub2e4:<\/p>\n