public string DESdecrypt(string emri, string keystr, string ivstr, string teksti)
{
rsa rsa = new rsa();
string filere = File.ReadAllText("C:/Users/hp/Desktop/keys/users.txt");
string[] a = filere.Split();
for (int i = 0; i < a.Length; i++)
{
if (emri == a[i])
{
emri = a[i - 1];
}
}
string k = rsa.RSAdecr(emri, keystr);
byte[] key = Convert.FromBase64String(k);
byte[] iv = Convert.FromBase64String(ivstr);
byte[] tekstibyte = Encoding.UTF8.GetBytes(teksti);
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream memoryStream = new MemoryStream
(Convert.FromBase64String(teksti));
CryptoStream cryptoStream = new CryptoStream(memoryStream,
cryptoProvider.CreateDecryptor(key, iv), CryptoStreamMode.Read);
StreamReader reader = new StreamReader(cryptoStream);
return(reader.ReadToEnd());
}
public string DESenc(string emri, string keystr, string ivstr, string teksti)
{
rsa rsa = new rsa();
string k = rsa.RSAdecr(emri, keystr);
byte[] key = Convert.FromBase64String(k);
byte[] iv = Convert.FromBase64String(ivstr);
byte[] tekstibyte = Encoding.UTF8.GetBytes(teksti);
if (String.IsNullOrEmpty(teksti))
{
throw new ArgumentNullException
("The string which needs to be encrypted can not be null.");
}
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream,
cryptoProvider.CreateEncryptor(key, iv), CryptoStreamMode.Write);
StreamWriter writer = new StreamWriter(cryptoStream);
writer.Write(teksti);
writer.Flush();
cryptoStream.FlushFinalBlock();
writer.Flush();
return(Convert.ToBase64String(memoryStream.GetBuffer(), 0, (int)memoryStream.Length));
}
static void Main(string[] args)
{
rsa cifrado = new rsa();
Console.WriteLine("Ingrese p");
int a = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Ingrese q");
int b = Convert.ToInt32(Console.ReadLine());
cifrado.generarLlaves(a, b);
Console.WriteLine("Texto");
string texto = Console.ReadLine();
Console.WriteLine("Llave");
string llave = Console.ReadLine();
Console.WriteLine("Nombre");
string nombre = Console.ReadLine();
cifrado.Cifrar(texto, llave, nombre);
Console.WriteLine("Descifrar texto");
string des = Console.ReadLine();
Console.WriteLine("Llave para descifrar");
string llave2 = Console.ReadLine();
Console.WriteLine("Nombre para descifrar");
string nombre2 = Console.ReadLine();
cifrado.Descifrar(des, llave2, nombre2);
}
public broker()
{
name = "Default Broker";
clist = new List <bcertificate>();
rsa brsa = new rsa();
bpvk = brsa.getPrivate();
bpbk = brsa.getPublic();
}
private void genRSAKeys(out BigInteger e, out BigInteger d, out BigInteger n)
{
rsa Rsa = new rsa();
e = new BigInteger(Rsa.gete());
//Console.WriteLine("\nprivate KEY(V): " + e);
d = new BigInteger(Rsa.getd());
//Console.WriteLine("\nPRIVATE KEY(U): " + d);
n = new BigInteger(Rsa.getn());
nrsa = n;
}
public user(string n, string m, string c)
{
name = n;
mail = m;
card = c;
commited = false;
rsa ursa = new rsa();
upvk = ursa.getPrivate();
upbk = ursa.getPublic();
}
public user()
{
name = "defaultname";
mail = "defaultmail";
card = "defaultcard";
commited = false;
rsa ursa = new rsa();
upvk = ursa.getPrivate();
upbk = ursa.getPublic();
}
private void button2_Click(object sender, EventArgs e)
{
string username = textBox1.Text;
string password = textBox2.Text;
if (username.Equals("") || password.Equals("")) {
MessageBox.Show("用户名密码不能为空","提示");
}
else
{
char[] cc = password.ToCharArray();
string sendpsd = "";
rsa myrsa = new rsa();
for (int i = 0; i < cc.Length; i++)
{
sendpsd += myrsa.rsamain(cc[i], 0);
sendpsd += "#";
}
client tcpclient = new client();
tcpclient.SendMessage(username, sendpsd);
}
}
public void readText(string mesazhi, string token)
{
faza3 f3=new faza3();
if (String.IsNullOrEmpty(token))
{
string[] msg = mesazhi.Split();
string m = msg[0] + " " + msg[1] + " " + msg[2] + " " + msg[3];
//string t = Console.ReadLine();//File.ReadAllText("C:/Users/hp/Desktop/keys/"+ emri +"encrypted.xml");
string dec = decrypt(m);
string[] arg = dec.Split();
Console.WriteLine(" Emri ..:" + arg[0]);
Console.WriteLine(" Decrypted ..:" + arg[1]);
}
else
{
string[] msg = mesazhi.Split();
rsa rsa = new rsa();
string m = msg[0] + " " + msg[1] + " " + msg[2] + " " + msg[3];
string dec = decrypt(m);
string[] arg = dec.Split();
string filere = File.ReadAllText("C:/Users/hp/Desktop/keys/users.txt");//
string[] a = filere.Split();
string h = "";
if(f3.status(token)=="Nuk ekziston")
{
Console.Write(" Tokeni jo valid ");
return;
}
string[] tokenich = token.Split();
string derguesi = "";
for (int i = 0; i < a.Length; i++)
{
if (tokenich[0] == a[i]) { derguesi = a[i - 1]; }
}
string k = rsa.RSAdecr(derguesi, msg[4]);
string s = m + " " + k;
string desdcr = decrypt(s);
string[] dcr = desdcr.Split();
Console.WriteLine(" Emri i marresit ..:" + arg[0]);
Console.WriteLine(" Decrypted ..:" + arg[1]);
Console.WriteLine(" Emri i derguesit ..:" + derguesi);//Encoding.ASCII.GetString(Convert.FromBase64String(derguesi)));
if (arg[1] == dcr[1])
{
Console.WriteLine(" Nenshkrimi ..: valid");
}
else
{
Console.WriteLine(" Nenshkrimi ..: jovalid , mungon celesi publik" + derguesi);
}
File.WriteAllText("C:/Users/hp/Desktop/keys/" + arg[0] + "decrypted.xml", dec);
Console.WriteLine("teksti u ruajt ne ...:" + "C:/Users/hp/Desktop/keys/");
}
public async Task <ActionResult> Post([FromRoute] string name, [FromForm] IFormFile archivo, [FromForm] IFormFile llave)
{
/*Crear Carpeta 'Uploads' para guardar los archivos subidos*/
string workingDirectory = Environment.CurrentDirectory;
string pathFolderActual = Directory.GetParent(workingDirectory).FullName;
string pathFilesDirectory = pathFolderActual + "\\Uploads\\";
string rutaArchivo = pathFilesDirectory + archivo.FileName;
string rutaLlave = pathFilesDirectory + llave.FileName;
string extensionArchivo = "." + archivo.FileName.Split(".")[1];
// Ser verifica si existe el directorio y se elimina para evitar duplicidad
if (Directory.Exists(pathFilesDirectory))
{
Directory.Delete(pathFilesDirectory, true);
}
Directory.CreateDirectory(pathFilesDirectory);
using (var fileStream = new FileStream((rutaArchivo), FileMode.Create))
{
await archivo.CopyToAsync(fileStream);
}
using (var fileStream = new FileStream((rutaLlave), FileMode.Create))
{
await llave.CopyToAsync(fileStream);
}
string pathCifrados = pathFolderActual + "\\Cifrados\\";
// Ser verifica si existe el directorio y se elimina para evitar duplicidad
if (Directory.Exists(pathCifrados))
{
Directory.Delete(pathCifrados, true);
}
Directory.CreateDirectory(pathCifrados);
FileStream files;
switch (extensionArchivo)
{
case ".txt": {
rsa cifradoRsa = new rsa();
cifradoRsa.Cifrar(rutaArchivo, rutaLlave, name);
var streamCompress = System.IO.File.OpenRead($"{name}.rsa");
return(new FileStreamResult(streamCompress, "application/" + ".rsa")
{
FileDownloadName = name + ".rsa"
});
}
break;
case ".rsa":
{
rsa descifradoRsa = new rsa();
descifradoRsa.Descifrar(rutaArchivo, rutaLlave, name);
var streamCompress = System.IO.File.OpenRead($"{name}.txt");
return(new FileStreamResult(streamCompress, "application/" + ".txt")
{
FileDownloadName = name + ".txt"
});
}
break;
default: {
return(BadRequest());
}
break;
}
}
public ActionResult generarLlaves([FromRoute] string p, [FromRoute] string q)
{
/*Crear Carpeta 'Keys' para guardar las llaves*/
string workingDirectory = Environment.CurrentDirectory;
string pathFolderActual = Directory.GetParent(workingDirectory).FullName;
string pathDirectoryKeys = pathFolderActual + "\\Keys\\";
string rutaKeyPublica = "";
string rutaKeyPrivada = "";
// Ser verifica si existe el directorio y se elimina para evitar duplicidad
if (Directory.Exists(pathDirectoryKeys))
{
Directory.Delete(pathDirectoryKeys, true);
}
Directory.CreateDirectory(pathDirectoryKeys);
try
{
rsa generarKeys = new rsa();
// Se verifica si son primos
if (generarKeys.esPrimo(int.Parse(p)) && generarKeys.esPrimo(int.Parse(q)))
{
// Se verifican si estan entre 50 y 32000
if ((int.Parse(p) > 50 && int.Parse(p) < 32000) && (int.Parse(q) > 50 && int.Parse(q) < 32000))
{
generarKeys.generarLlaves(int.Parse(p), int.Parse(q));
//Escribir archivo para public key
rutaKeyPublica = pathDirectoryKeys + "public.key";
System.IO.File.WriteAllBytes(rutaKeyPublica, System.Text.Encoding.Default.GetBytes(generarKeys.public_key));
//Escribir archivo para private key
rutaKeyPrivada = pathDirectoryKeys + "private.key";
System.IO.File.WriteAllBytes(rutaKeyPrivada, System.Text.Encoding.Default.GetBytes(generarKeys.private_key));
using (ZipFile zip = new ZipFile())
{
zip.AddEntry("public.key", System.IO.File.ReadAllBytes(rutaKeyPublica));
zip.AddEntry("private.key", System.IO.File.ReadAllBytes(rutaKeyPrivada));
using (MemoryStream output = new MemoryStream())
{
zip.Save(output);
return(File(output.ToArray(), "application/zip", "Keys.zip"));
}
}
}
else
{
return(BadRequest());
}
}
else
{
return(BadRequest());
}
}
catch (Exception ex) {
return(BadRequest());
}
}
public void StartServer()
{
TcpListener myListener = null;
try
{
IPAddress localAddr = IPAddress.Parse("127.0.0.1");
myListener = new TcpListener(localAddr, PORT);
myListener.Start();
Console.WriteLine("开始侦听 {0} 端口……", PORT);
//开始阻塞
while (true)
{
Socket mySocket = myListener.AcceptSocket();
Console.WriteLine("接收到客户的连接");
Byte[] recvBytes = new Byte[256];
Int32 bytes = mySocket.Receive(recvBytes, recvBytes.Length, SocketFlags.None);
// 将缓冲区当中的 byte 数组，转化为 字符串.
String str = Encoding.ASCII.GetString(recvBytes, 0, bytes);
Console.WriteLine("接收到来自客户端的数据为：{0}", str);
string[] s = str.Split(new char[] { '#' });
string username = s[0];
string password = "";
int temp;
for (int i = 1; i < s.Length - 1; i++)
{
rsa myrsa = new rsa();
temp = Int32.Parse(s[i]);
password += (char)myrsa.rsamain(temp, 1);
}
//connect database
bool state = false;
state = sql.domysql(username, password);
if (state)
{
//登陆成功
Byte[] sendBytes = Encoding.ASCII.GetBytes("ok");
mySocket.Send(sendBytes, sendBytes.Length, SocketFlags.None);
}
else
{
//失败
Byte[] sendBytes = Encoding.ASCII.GetBytes("wrong");
mySocket.Send(sendBytes, sendBytes.Length, SocketFlags.None);
}
// 关闭 Socket
mySocket.Close();
}
}
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
}
finally
{
myListener.Stop();
}
}
