в 15:31, 26 мая 2010

2010-05-26T15:31:53Z

Admin: 1 версия

2010-05-26T12:20:26Z

1 версия

Новая страница

==Decrypting a file==

<source lang="csharp">using System;
using System.IO;
using System.Security.Cryptography;
class MainClass
{
public static void Main()
{
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
FileStream fsKeyIn = File.OpenRead(@"c:\encrypted.key");

BinaryReader br = new BinaryReader(fsKeyIn);
tdes.Key = br.ReadBytes(24);
tdes.IV = br.ReadBytes(8);
FileStream fsIn = File.OpenRead(@"c:\encrypted.txt");
CryptoStream cs = new CryptoStream(fsIn, tdes.CreateDecryptor(),CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cs);
Console.WriteLine(sr.ReadToEnd());
sr.Close();
}
}</source>
<pre class=codeResult>str</pre>

==Encrypting a file==

<source lang="csharp">using System;
using System.IO;
using System.Security.Cryptography;
class MainClass
{
public static void Main()
{
FileStream fsOut = File.Create(@"c:\encrypted.txt");
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
CryptoStream cs = new CryptoStream(fsOut, tdes.CreateEncryptor(), CryptoStreamMode.Write);
StreamWriter sw = new StreamWriter(cs);
sw.WriteLine("str");
sw.Flush();
sw.Close();
FileStream fsKeyOut = File.Create(@"c:\encrypted.key");

BinaryWriter bw = new BinaryWriter(fsKeyOut);
bw.Write( tdes.Key );
bw.Write( tdes.IV );
bw.Flush();
bw.Close();
}
}</source>

← Предыдущая	Версия 15:31, 26 мая 2010
(нет различий)

Csharp/CSharp Tutorial/File Directory Stream/Encrypt Decrypt File - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия