private void btnVerify_Click(object sender, EventArgs e)
{
if (txtFilePath.Text == "" || txtRSAPub.Text == "" || txtSignature.Text == "")
{
return;
}
myRSA my = new myRSA();
string publickey = this.txtRSAPub.Text;
myMD5 m5 = new myMD5(1, this.txtFilePath.Text);
//验证
bool b = myRSA.VerifySigned(m5.getMD5(), this.txtSignature.Text, publickey);
if (b)
{
MessageBox.Show("验证成功");
}
else
{
MessageBox.Show("验证失败");
}
}
private void Dealwith(object socObj)
{
Socket soc = socObj as Socket;
try
{
byte[] arrMsg = new byte[1024];
int length = soc.Receive(arrMsg);
string strSoc = soc.RemoteEndPoint.ToString();
#region 获取文件信息
if (arrMsg[0] == (byte)StatusEnum.getdetail)
{
AddMsg(strSoc + " is geting details.");
string path = @"./doc/";
var files = Directory.GetFiles(path);
StringBuilder sb = new StringBuilder();
foreach (var file in files)
{
FileInfo fi = new FileInfo(file);
sb.Append(fi.Name);
sb.Append("|");
}
sb.Remove(sb.Length - 1, 1);
byte[] arr = null;
arr = System.Text.Encoding.UTF8.GetBytes(sb.ToString());
byte[] newArr = new byte[arr.Length + 1];
newArr[0] = (byte)StatusEnum.detail;
arr.CopyTo(newArr, 1);
soc.Send(newArr);
soc.Shutdown(SocketShutdown.Both);
soc.Close();
}
#endregion
#region 载文件
else if (arrMsg[0] == (byte)StatusEnum.getfile)
{
string strFile = Encoding.UTF8.GetString(arrMsg, 1, length - 1);
AddMsg(strSoc + " is download \"" + strFile + "\" .");
string path1 = @"./doc/";
string path = Path.Combine(path1, strFile);
FileStream fs = File.Open(path, FileMode.Open);
//文件内容
byte[] bdata = new byte[fs.Length];
fs.Read(bdata, 0, bdata.Length);
fs.Close();
//172位签名
int RSALength = 172;
myRSA my = new myRSA();
string privatekey = my.ReadPrivateKey("./RSA/my.rsa");
myMD5 m5 = new myMD5(1, path);
string Signature = myRSA.HashAndSignString(m5.getMD5(), privatekey);
byte[] arrSignature = Encoding.UTF8.GetBytes(Signature);
//文件长度, 固定为20字节，前面会自动补零
byte[] fileLengthArray = Encoding.UTF8.GetBytes(bdata.Length.ToString("D20"));
byte[] arrFile = new byte[fileLengthArray.Length + bdata.Length + RSALength];
arrSignature.CopyTo(arrFile, 0);
fileLengthArray.CopyTo(arrFile, RSALength);
bdata.CopyTo(arrFile, fileLengthArray.Length + RSALength);
//发文件长度+文件内容
soc.Send(arrFile);
//禁用 Socket
soc.Shutdown(SocketShutdown.Both);
//关闭 Socket
soc.Close();
}
#endregion
#region 获取RSA公钥
else if (arrMsg[0] == (byte)StatusEnum.getRSAPub)
{
AddMsg(strSoc + " is geting RSAPub.");
myRSA my = new myRSA();
string publickey = my.ReadPublicKey("./RSA/my.rsa.pub");
byte[] arr = null;
arr = System.Text.Encoding.UTF8.GetBytes(publickey);
byte[] newArr = new byte[arr.Length + 1];
newArr[0] = (byte)StatusEnum.RSAPub;
arr.CopyTo(newArr, 1);
soc.Send(newArr);
//禁用 Socket
soc.Shutdown(SocketShutdown.Both);
//关闭 Socket
soc.Close();
}
#endregion
else
{
}
}
catch (Exception ex)
{
AddMsg("[!!!!] Exception(Dealwith)：" + ex.Message);
}
}
