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トップに関する質問C#の復号プログラムでエラーが出てしまいます

編集履歴

質問編集履歴

1

誤字、文法修正

2021/11/01 15:55

投稿

tehori
tehori

スコア1

test CHANGED
File without changes
test CHANGED
@@ -44,7 +44,7 @@
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- Console.WriteLine(DecS("RYlIxh5X8ktRsFuquVPeFiP2qPTgCTSrSNZsM+PPCS5BuHnBITZi4TMVbyXTx2LK+rtkCkD9VpB+/J1XSOGTjNuLUBSmVSPP/vHIX8W6LIcyd+XSocFDm5tTy0i/XQoTBR5wxzyCgmY8fEkM","wns the ow"));
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+ Console.WriteLine(Decode("・・・","aaaa"));
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@@ -54,21 +54,21 @@
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- private string DecS(string text, string p)
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+ private string Decode(string text, string p)
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  {
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- System.Security.Cryptography.RijndaelManaged _rijndeal = new System.Security.Cryptography.RijndaelManaged();
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+ System.Security.Cryptography.RijndaelManaged _rijndael = new System.Security.Cryptography.RijndaelManaged();
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  byte[] _key, _iv;
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- GenerateKeyFromPassWord(p, _rijndeal.KeySize, out _key, _rijndeal.BlockSize, out _iv);
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+ GKFP(p, _rijndael.KeySize, out _key, _rijndael.BlockSize, out _iv);
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- _rijndeal.Key = _key;
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+ _rijndael.Key = _key;
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- _rijndeal.IV = _iv;
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+ _rijndael.IV = _iv;
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@@ -76,7 +76,7 @@
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- System.Security.Cryptography.ICryptoTransform _decryptor = _rijndeal.CreateDecryptor();
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+ System.Security.Cryptography.ICryptoTransform _decryptor = _rijndael.CreateDecryptor();
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@@ -92,23 +92,23 @@
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- public static void GenerateKeyFromPassWord(string pass, int keySize, out byte[] key, int blockSize, out byte[] iv)
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+ public static void GKFP(string pass, int keySize, out byte[] key, int blockSize, out byte[] iv)
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  {
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- byte[] _salt = System.Text.Encoding.UTF8.GetBytes("これがsaltとなります");
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+ byte[] _salt = System.Text.Encoding.UTF8.GetBytes("・・・");
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  System.Security.Cryptography.Rfc2898DeriveBytes _deviceBytes = new System.Security.Cryptography.Rfc2898DeriveBytes(pass, _salt);
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- _deviceBytes.IterationCount = 1000;
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+
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- key = _deviceBytes.GetBytes(keySize / 8);
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+ key = _deviceBytes.GetBytes(keySize);
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- iv = _deviceBytes.GetBytes(blockSize / 8);
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+ iv = _deviceBytes.GetBytes(blockSize);
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  }
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