boumadienboussaid
Messages postés1Date d'inscriptionjeudi 14 avril 2011StatutMembreDernière intervention20 avril 2011
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20 avril 2011 à 15:49
LUDINSKI
Messages postés441Date d'inscriptionmardi 2 décembre 2003StatutMembreDernière intervention22 mai 2012
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21 avril 2011 à 05:31
using System;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.IO;
using System.Text;
class Test
{
public Test()
{ byte [] td = new Byte [16];
Byte[] key = new Byte[] {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16};
this.EncryptData("abc.txt", "toto.txt", key, td);
}
public void EncryptData(String inName, String outName, byte[] tdesKey, byte[] tdesIV)
{
//Create the file streams to handle the input and output files.
FileStream fin = new FileStream(inName, FileMode.Open, FileAccess.Read);
FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
fout.SetLength(0);
//Create variables to help with read and write.
byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
long rdlen = 0; //This is the total number of bytes written.
long totlen = fin.Length; //This is the total length of the input file.
int len; //This is the number of bytes to be written at a time.
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.KeySize = 128;
CryptoStream encStream = new CryptoStream(fout, tdes.CreateEncryptor(tdesKey, tdesIV), CryptoStreamMode.Write);
Console.WriteLine("Encrypting...");
//Read from the input file, then encrypt and write to the output file.
while (rdlen < totlen)
{
len = fin.Read(bin, 0, 100);
encStream.Write(bin, 0, len);
rdlen = rdlen + len;
Console.WriteLine("{0} bytes processed", rdlen);
}