質問編集履歴

文法の修正

2021/11/01 15:50

投稿

tehori

スコア1

title CHANGED Viewed

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body CHANGED Viewed

@@ -28,23 +28,23 @@
     {
       Sample sample = new Sample();
-      Console.WriteLine(sample.DecS("RYlIxh5X8ktRsFuquVPeFiP2qP","wns the ow"));
+      Console.WriteLine(sample.Decode("...","aaa"));
     }
-    private string DecS(string text, string p)
+    private string Decode(string text, string p)
     {
-        System.Security.Cryptography.RijndaelManaged _rijndeal = new System.Security.Cryptography.RijndaelManaged();
+        System.Security.Cryptography.RijndaelManaged _rijndael = new System.Security.Cryptography.RijndaelManaged();
         byte[] _key, _iv;
-        GenerateKeyFromPassWord(p, _rijndeal.KeySize, out _key, _rijndeal.BlockSize, out _iv);
+        GenerateKeyFromPassWord(p, _rijndael.KeySize, out _key, _rijndael.BlockSize, out _iv);
-        _rijndeal.Key = _key;
+        _rijndael.Key = _key;
-        _rijndeal.IV = _iv;
+        _rijndael.IV = _iv;
         byte[] _strByte = System.Convert.FromBase64String(text);
-        System.Security.Cryptography.ICryptoTransform _decryptor = _rijndeal.CreateDecryptor();
+        System.Security.Cryptography.ICryptoTransform _decryptor = _rijndael.CreateDecryptor();
         byte[] _decByte = _decryptor.TransformFinalBlock(_strByte, 0, _strByte.Length);
         _decryptor.Dispose();
@@ -52,15 +52,14 @@
         return System.Text.Encoding.UTF8.GetString(_decByte);
     }
-    public static void GenerateKeyFromPassWord(string pass, int keySize, out byte[] key, int blockSize, out byte[] iv)
+    public static void GKFP(string pass, int keySize, out byte[] key, int blockSize, out byte[] iv)
     {
-        byte[] _salt = System.Text.Encoding.UTF8.GetBytes("これがsaltとなります");
+        byte[] _salt = System.Text.Encoding.UTF8.GetBytes("・・・");
-        System.Security.Cryptography.Rfc2898DeriveBytes _deviceBytes = new System.Security.Cryptography.Rfc2898DeriveBytes(pass, _salt);
+        System.Security.Cryptography.Rfc2898DeriveBytes _deviceBytes = new System.Security.Cryptography.Rfc2898DeriveBytes(password, _salt);
-        _deviceBytes.IterationCount = 1000;
-        key = _deviceBytes.GetBytes(keySize / 8);
+        key = _deviceBytes.GetBytes(keySize);
-        iv = _deviceBytes.GetBytes(blockSize / 8);
+        iv = _deviceBytes.GetBytes(blockSize);
     }
   }
 }