в 15:31, 26 мая 2010

2010-05-26T15:31:19Z

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2010-05-26T11:47:07Z

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==Cryp Data Receiver==

<source lang="csharp">
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
using System.Security;
using System.Security.Cryptography;
using System.Text;
public class CryptoDataRcvr
{
private SerialEmployee RecvData(NetworkStream strm)
{
MemoryStream memstrm = new MemoryStream();
byte[] Key = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
byte[] IV = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
CryptoStream csw = new CryptoStream(memstrm, tdes.CreateDecryptor(Key, IV),
CryptoStreamMode.Write);
byte[] data = new byte[2048];
int recv = strm.Read(data, 0, 4);
int size = BitConverter.ToInt32(data, 0);
int offset = 0;
while(size > 0)
{
recv = strm.Read(data, 0, size);
csw.Write(data, offset, recv);
offset += recv;
size -= recv;
}
csw.FlushFinalBlock();
IFormatter formatter = new SoapFormatter();
memstrm.Position = 0;
SerialEmployee emp = (SerialEmployee)formatter.Deserialize(memstrm);
memstrm.Close();
return emp;
}
public CryptoDataRcvr()
{
TcpListener server = new TcpListener(9050);
server.Start();
Console.WriteLine("Waiting for a client...");
TcpClient client = server.AcceptTcpClient();
NetworkStream strm = client.GetStream();
SerialEmployee emp1 = RecvData(strm);
Console.WriteLine("emp1.EmployeeID = {0}", emp1.EmployeeID);
Console.WriteLine("emp1.LastName = {0}", emp1.LastName);
Console.WriteLine("emp1.FirstName = {0}", emp1.FirstName);
Console.WriteLine("emp1.YearsService = {0}", emp1.YearsService);
Console.WriteLine("emp1.Salary = {0}\n", emp1.Salary);
SerialEmployee emp2 = RecvData(strm);
Console.WriteLine("emp2.EmployeeID = {0}", emp2.EmployeeID);
Console.WriteLine("emp2.LastName = {0}", emp2.LastName);
Console.WriteLine("emp2.FirstName = {0}", emp2.FirstName);
Console.WriteLine("emp2.YearsService = {0}", emp2.YearsService);
Console.WriteLine("emp2.Salary = {0}", emp2.Salary);
strm.Close();
server.Stop();
}
public static void Main()
{
CryptoDataRcvr cdr = new CryptoDataRcvr();
}
}
[Serializable]
public class SerialEmployee
{
public int EmployeeID;
public string LastName;
public string FirstName;
public int YearsService;
public double Salary;
public SerialEmployee()
{
EmployeeID = 0;
LastName = null;
FirstName = null;
YearsService = 0;
Salary = 0.0;
}
}

</source>

==Cryp Data Sender==

<source lang="csharp">
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Soap;
using System.Security;
using System.Security.Cryptography;
using System.Text;
public class CryptoDataSender
{
private void SendData(NetworkStream strm, SerialEmployee emp)
{
IFormatter formatter = new SoapFormatter();
MemoryStream memstrm = new MemoryStream();
byte[] Key = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
byte[] IV = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
CryptoStream csw = new CryptoStream(memstrm, tdes.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
formatter.Serialize(csw, emp);
csw.FlushFinalBlock();
byte[] data = memstrm.GetBuffer();
int memsize = (int)memstrm.Length;
byte[] size = BitConverter.GetBytes(memsize);
strm.Write(size, 0, 4);
strm.Write(data, 0, (int)memsize);
strm.Flush();
csw.Close();
memstrm.Close();
}
public CryptoDataSender()
{
SerialEmployee emp1 = new SerialEmployee();
SerialEmployee emp2 = new SerialEmployee();
emp1.EmployeeID = 1;
emp1.LastName = "Blum";
emp1.FirstName = "Katie Jane";
emp1.YearsService = 12;
emp1.Salary = 35000.50;
emp2.EmployeeID = 2;
emp2.LastName = "Blum";
emp2.FirstName = "Jessica";
emp2.YearsService = 9;
emp2.Salary = 23700.30;
TcpClient client = new TcpClient("127.0.0.1", 9050);
NetworkStream strm = client.GetStream();
SendData(strm, emp1);
SendData(strm, emp2);
strm.Close();
client.Close();
}
public static void Main()
{
CryptoDataSender cds = new CryptoDataSender();
}
}

[Serializable]
public class SerialEmployee
{
public int EmployeeID;
public string LastName;
public string FirstName;
public int YearsService;
public double Salary;
public SerialEmployee()
{
EmployeeID = 0;
LastName = null;
FirstName = null;
YearsService = 0;
Salary = 0.0;
}
}

</source>

==CryptoStream demo==

<source lang="csharp">
/*
C# Network Programming
by Richard Blum
Publisher: Sybex
ISBN: 0782141765
*/
using System;
using System.IO;
using System.Security;
using System.Security.Cryptography;
using System.Text;
public class CryptoTest
{
public static void Main()
{
Console.Write("Enter phrase to encrypt: ");
string phrase = Console.ReadLine();
MemoryStream memstrm = new MemoryStream();
byte[] Key = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
byte[] IV = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16};
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
CryptoStream csw = new CryptoStream(memstrm,
tdes.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
csw.Write(Encoding.ASCII.GetBytes(phrase), 0, phrase.Length);
csw.FlushFinalBlock();
byte[] cryptdata = memstrm.GetBuffer();
Console.WriteLine("Encrypted: {0}",
Encoding.ASCII.GetString(cryptdata, 0, (int)memstrm.Length));
memstrm.Position = 0;
byte[] data = new byte[1024];
CryptoStream csr = new CryptoStream(memstrm,
tdes.CreateDecryptor(Key, IV), CryptoStreamMode.Read);
int recv = csr.Read(data, 0, data.Length);
string newphrase = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine("Decrypted: {0}", newphrase);
csr.Close();
csw.Close();
memstrm.Close();
}
}

</source>

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в 15:31, 26 мая 2010

Admin: 1 версия