質問編集履歴
1
誤字、文法修正
title
CHANGED
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File without changes
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body
CHANGED
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@@ -21,23 +21,23 @@
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21
21
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static void Main()
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22
22
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{
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23
23
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24
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-
Console.WriteLine(
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24
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+
Console.WriteLine(Decode("・・・","aaaa"));
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25
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}
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28
28
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29
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-
private string
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29
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+
private string Decode(string text, string p)
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{
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31
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-
System.Security.Cryptography.RijndaelManaged
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31
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+
System.Security.Cryptography.RijndaelManaged _rijndael = new System.Security.Cryptography.RijndaelManaged();
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32
32
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byte[] _key, _iv;
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34
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-
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34
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+
GKFP(p, _rijndael.KeySize, out _key, _rijndael.BlockSize, out _iv);
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35
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-
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35
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+
_rijndael.Key = _key;
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36
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-
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36
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+
_rijndael.IV = _iv;
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37
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byte[] _strByte = System.Convert.FromBase64String(text);
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39
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40
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-
System.Security.Cryptography.ICryptoTransform _decryptor =
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40
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+
System.Security.Cryptography.ICryptoTransform _decryptor = _rijndael.CreateDecryptor();
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byte[] _decByte = _decryptor.TransformFinalBlock(_strByte, 0, _strByte.Length);
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_decryptor.Dispose();
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@@ -45,15 +45,15 @@
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return System.Text.Encoding.UTF8.GetString(_decByte);
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}
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48
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-
public static void
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48
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+
public static void GKFP(string pass, int keySize, out byte[] key, int blockSize, out byte[] iv)
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49
49
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{
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50
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-
byte[] _salt = System.Text.Encoding.UTF8.GetBytes("
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50
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+
byte[] _salt = System.Text.Encoding.UTF8.GetBytes("・・・");
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51
51
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System.Security.Cryptography.Rfc2898DeriveBytes _deviceBytes = new System.Security.Cryptography.Rfc2898DeriveBytes(pass, _salt);
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53
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-
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53
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+
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54
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55
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-
key = _deviceBytes.GetBytes(keySize
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55
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+
key = _deviceBytes.GetBytes(keySize);
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56
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-
iv = _deviceBytes.GetBytes(blockSize
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56
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+
iv = _deviceBytes.GetBytes(blockSize);
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}
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}
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}
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