for Push.

2026-06-01 13:23:34 +09:00
parent 9e093ea99f
commit a6550e9928
93 changed files with 10393 additions and 0 deletions
@@ -0,0 +1,96 @@
+using DocumentFormat.OpenXml.Wordprocessing;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace KssSmaPlaLib.Encryption
+{
+    public static class SimpleEncryptUxer
+    {
+        public static readonly string FixedPassword = "KssSmaPlaDxer!";
+        private static readonly byte[] FixedIV = new byte[16];
+
+        public static bool TuckIntoMain(string[] args)
+        {
+            if (args.Length != 2) return false;
+
+            if (args[0].ToLower() == "/enc")
+            {
+                if (SimpleEncryptUxer.Encrypt(args[1], out var resultText, out var resultMessage))
+                {
+                    Console.WriteLine($"暗号化結果[{resultText}]");
+                }
+                else
+                {
+                    Console.WriteLine(resultMessage);
+                }
+                return true;
+            }
+            else if (args[0].ToLower() == "/dec")
+            {
+                if (SimpleEncryptUxer.Decrypt(args[1], out var resultText, out var resultMessage))
+                {
+                    Console.WriteLine($"複合化結果[{resultText}]");
+                }
+                else
+                {
+                    Console.WriteLine(resultMessage);
+                }
+                return true;
+            }
+            return false;
+        }
+
+        public static bool Encrypt(string plainText, out string resultText, out string resultMessage, string password = "")
+        {
+            resultText = string.Empty;
+            resultMessage = string.Empty;
+            password = string.IsNullOrEmpty(password) ? FixedPassword : password;
+            try
+            {
+                byte[] key = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(password));
+                // 固定IV（簡易仕様とする）※IVはオールゼロ
+                using (var aes = new AesManaged { Key = key, IV = FixedIV })
+                using (var encryptor = aes.CreateEncryptor())
+                {
+                    byte[] inputBytes = Encoding.UTF8.GetBytes(plainText);
+                    byte[] encryptedBytes = encryptor.TransformFinalBlock(inputBytes, 0, inputBytes.Length);
+                    resultText = Convert.ToBase64String(encryptedBytes);
+                    return true;
+                }
+            }
+            catch (Exception ex)
+            {
+                resultMessage = $"暗号化に失敗しました。[エラー内容:{ex.Message}]";
+                return false;
+            }
+        }
+
+        public static bool Decrypt(string encryptedText, out string resultText, out string resultMessage, string password = "")
+        {
+            resultText = string.Empty;
+            resultMessage = string.Empty;
+            password = string.IsNullOrEmpty(password) ? FixedPassword : password;
+            try
+            {
+                byte[] key = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(password));
+                byte[] encryptedBytes = Convert.FromBase64String(encryptedText);
+                using (var aes = new AesManaged { Key = key, IV = FixedIV })
+                using (var decryptor = aes.CreateDecryptor())
+                {
+                    byte[] decryptedBytes = decryptor.TransformFinalBlock(encryptedBytes, 0, encryptedBytes.Length);
+                    resultText = Encoding.UTF8.GetString(decryptedBytes);
+                    return true;
+                }
+            }
+            catch (Exception ex)
+            {
+                resultMessage = $"複合化に失敗しました。[エラー内容:{ex.Message}]";
+                return false;
+            }
+        }
+    }
+}