void MaHoa()
{
key = new Khoa(textBoxKEY.Text);
if (key.KiemTraKhoa())
{
string text = textBoxText.Text;
des = new Des();
string cipher = des.MaHoa(text, key, chose: MaHoaOrGiaMa);
textBoxReturn.Text = cipher;
}
else
{
MessageBox.Show("Key không hợp lệ!");
}
}
static void Main(string[] args)
{
Console.OutputEncoding = Encoding.Unicode;
Des des = new Des();
WriteLine("Input string: ");
string str = ReadLine();
str = des.ToRigthLength(str);
Console.WriteLine($"input to right length: {str}");
string shifr = "";
foreach (string s in des.MakeBlocks4Letter(str))
{
shifr += des.Shifr(s, des.SdvigLeft, "home");
}
WriteLine(shifr);
WriteLine("\n\n");
WriteLine("desh");
string deshifr = "";
List <string> dmb = des.MakeBlocks64Bit(shifr);
for (int i = 0; i < dmb.Count; i++)
{
deshifr += des.Desifr(dmb[i], des.SdvigLeft, i);
}
WriteLine(deshifr + "\n\n\n");
StringBuilder check1 = new StringBuilder();
StringBuilder check2 = new StringBuilder();
for (int i = 0; i < 64; i++)
{
check1.Append('0');
check2.Append('0');
}
check2[63] = '1';
des.CheckL(check1.ToString(), check2.ToString(), "home");
}
//通信使用报文
public string SendPackage(string msg,string DesKey)
{
string result = null;
string cipher = null;
string cipherKey = null;
Des d = new Des();
int l;
if((l=DesKey.Length)!=8)
{
for(int i=l;i<8;i++)
{
DesKey += "0";
}
}
cipher=d.Encrypy(msg,DesKey);
cipherKey = ser.Encrypy(DesKey, SerEkey,SerNkey);
result = "s;" + cipherKey + ";" + cipher;
return result;
}
//会话请求拆包
public Cer getClient(string msg,Cer data)
{
Cer a = new Cer();
a = data;
string m=null;
string[] array = msg.Split(';');
int lengthStr = array.Length;
//接受加密会话信息
if(array[0]=="s")
{
if(lengthStr!=3)
{
//请求报文缺失
a.other = "请求报文缺失";
return a;
}
string desKey = ser.Decrypt(array[1], PrivateKey, nKey);
Des des = new Des();
a.other=des.Decrypt(array[2],desKey);
a.check = "SendOK"; //代表加密拆解正常
return a;
}
//接受会话请求（证书交换）
else if(array[0]=="r")
{
if(lengthStr!=9)
{
//请求会话包报文缺失
a.other = "请求会话包报文缺失";
return a;
}
//判断证书
int s=ser.check("CA",array[7],array[5],array[6]);
if(s==1)
{
//判断签名
//可在此添加版本
if(ser.check(array[2],array[8],array[3],array[4])==1)
{
a.ekey = array[3];
a.nkey = array[4];
a.ID = array[2];
a.other = "c;" + cer + ";" + sign;
a.check = "RequestOK"; //请求回话成功
return a;
}
else
{
//假签名
a.other = "签名错误";
return a;
}
}
else
{
//假证书
a.other = "证书错误";
return a;
}
}
else
{
a.other = "报文格式错误";
return a;
}
}