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mainwindow.cpp
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334 lines (280 loc) · 13.8 KB
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#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QFileDialog>
#include <QDebug>
#include <QPainter>
#include <QMessageBox>
#include <QBitArray>
#include <bitset>
#include <chrono>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
ui->lineEdit->setReadOnly(true);
ui->tabWidget->tabBar()->setTabText(0, tr("Шифр перестановки"));
ui->tabWidget->tabBar()->setTabText(1, tr("Шифр замены"));
ui->orlabel->setScaledContents(true);
ui->modlabel->setScaledContents(true);
ui->orlabel_2->setScaledContents(true);
ui->modlabel_2->setScaledContents(true);
ui->horizontalSlider->setSingleStep(1);
ui->horizontalSlider->setEnabled(false);
ui->radioButton->setChecked(true);
ui->horizontalSlider_2->setSingleStep(1);
ui->horizontalSlider_2->setEnabled(false);
ui->spinBox->setEnabled(false);
QObject::connect(ui->pushButton, &QPushButton::clicked, [=](){
ui->lineEdit->setText(QFileDialog::getOpenFileUrl(NULL, tr("Открыть файл"),
QUrl(QCoreApplication::applicationDirPath()),
"Bitmap (*.bmp)").toString(QUrl::PreferLocalFile));
QFile *file = new QFile(ui->lineEdit->text());
file->open(QIODevice::ReadOnly);
bytepic = new QByteArray(file->readAll());
im1 = new QImage();
im1->loadFromData(*bytepic);
im1->convertToFormat(QImage::Format_RGB32);
im2 = new QImage();
im2->loadFromData(*bytepic);
im2->convertToFormat(QImage::Format_RGB32);
QPixmap *pm = new QPixmap(ui->lineEdit->text());
ui->orlabel->setPixmap(*pm);
ui->orlabel_2->setPixmap(*pm);
divs = new QVector<quint32>(dividers(im1->width()*im1->height()));
ui->horizontalSlider->setRange(0, divs->size() - 1);
ui->horizontalSlider->setEnabled(true);
ui->horizontalSlider->setValue(1);
ui->horizontalSlider->setValue(0);
replDivs = new QVector<quint32>;
dataString = new QString("");
for(auto i = 0; i < im2->byteCount(); i++)
*dataString += QString::fromStdString(std::bitset<8>(*(im2->bits() + i)).to_string());
for(auto i: dividers(dataString->length())){
if(i <= 10)
replDivs->append(i);
else
continue;
}
ui->horizontalSlider_2->setRange(0, replDivs->size() - 1);
ui->horizontalSlider_2->setEnabled(true);
ui->horizontalSlider_2->setValue(1);
ui->horizontalSlider_2->setValue(0);
ui->spinBox->setMinimum(2);
ui->spinBox->setEnabled(true);
});
QObject::connect(ui->horizontalSlider, &QSlider::valueChanged,
[=](){ui->label_4->setText(QString::number(divs->at(ui->horizontalSlider->value())));});
QObject::connect(ui->horizontalSlider_2, &QSlider::valueChanged,[=]() {
ui->label_5->setText(QString::number(replDivs->at(ui->horizontalSlider_2->value())));
ui->spinBox->setMaximum((dataString->length()) / (ui->label_5->text().toUInt()) - 1);
});
ui->pushButton_2->setText("=>");
ui->pushButton_2->setMinimumSize(50,50);
ui->pushButton_3->setText("=>");
ui->pushButton_3->setMinimumSize(50,50);
ui->label_3->setText("");
ui->label_4->setText("");
ui->label_5->setText("");
QObject::connect(ui->pushButton_2, &QPushButton::clicked, [=](){
if(ui->lineEdit->text().isEmpty())
QMessageBox::warning(this, tr("Ошибка!"),
tr("Не выбран файл."), QMessageBox::Ok, QMessageBox::NoButton);
else {
QImage res(im1->size(), QImage::Format_RGB32);
res = *im1;
QString poliS = sel_poli((quint32)ui->label_4->text().toUInt());
if(poliS == "!")
QMessageBox::warning(this, tr("Ошибка!"),
tr("Нет подходящего полинома под данную длину ключа."),
QMessageBox::Ok, QMessageBox::NoButton);
else{
QString str = poliS;
str.replace("x", "x<span style=\" vertical-align:super;\">");
str.replace("+", "</span>+");
str = "<html><head/><body><p><span style=\" font-size:12pt;\">Полином: " + str + "</span</p></body></html>";
ui->label_3->setText(str);
quint32 poli = 0;
poliS.replace("+1", "+0");
poliS.remove(QChar('x'), Qt::CaseInsensitive);
poliS.replace("++", "+1+");
for(int b = 0; b <= poliS.count("+"); b++)
poli |= 1 << (quint32)poliS.section('+', b, b).toUInt();
QList<quint32> randlist = randSeq((quint32)ui->label_4->text().toUInt(),
poli, (quint32)poliS.section('+', 0, 0).toUInt());
QList<QRgb> pixelList;
for(quint32 h = 0; h < (quint32)im1->height(); h++)
for(quint32 w = 0; w < (quint32)im1->width(); w++)
pixelList << im1->pixel(w, h);
for(quint32 block = 0; block < (quint32)pixelList.length();
block += (quint32)randlist.length()){
for(quint32 i = 0; i < (quint32)randlist.length(); i++){
pixelList.swap(i + block, randlist[i] - 1 + block); //вроде работает, но хз
}
}
quint32 imwidth = im1->width();
for(quint32 h = 0; h < (quint32)im1->height(); h++)
for(quint32 w = 0; w < imwidth; w++){
res.setPixel(w, h, pixelList[h * imwidth + w]);
}
ui->modlabel->setPixmap(QPixmap::fromImage(res));
}
}
});
QObject::connect(ui->pushButton_3, &QPushButton::clicked, [=](){
if(ui->lineEdit->text().isEmpty())
QMessageBox::warning(this, tr("Ошибка!"),
tr("Не выбран файл."), QMessageBox::Ok, QMessageBox::NoButton);
else {
QImage res(im2->size(), QImage::Format_RGB32);
quint32 len_block = (quint32)ui->label_5->text().toUInt();
if(ui->radioButton->isChecked()){
//QHash<QString, QString> *repltable = new QHash<QString, QString>;
QHash<QString, QString> *repltable = new QHash<QString, QString>;
QString *ldataString = new QString(*dataString); //копируем dataString в ldataString, чтобы dataString не изменилась
QList<quint32> *psp = new QList<quint32>(randSeq(1 << len_block, 0b10000000011011, 13));
for(quint32 i = 0; i < 1 << len_block; i++ ) { //заполнение таблицы
auto tmp = QByteArray::number(i, 2).rightJustified(len_block, '0');
repltable->insert(tmp, QByteArray::number(psp->at(i)-1, 2).rightJustified(len_block, '0'));
}
//quint32 step = ui->label_5->text().toUInt(); // step == len_block
for(quint32 i = 0; i < ldataString->length(); i += len_block)
ldataString->replace(i, len_block, repltable->value(ldataString->mid(i, len_block)));
for(quint32 i = 0; i < ldataString->length(); i += 8)
*(res.bits() + i/8) = (uchar)ldataString->mid(i, 8).toUInt(0, 2);
ui->modlabel_2->setPixmap(QPixmap::fromImage(res));
delete repltable;
delete ldataString;
delete psp;
}
else if(ui->radioButton_2->isChecked()){
QString *ldataString = new QString(*dataString); //копируем dataString в ldataString, чтобы dataString не изменилась
quint32 kolvo_tab = ui->spinBox->text().toUInt(); //для 2 режима
//quint32 kolvo_tab = (dataString->length()) / len_block; //для 3 режима
for(quint32 j = 0; j < kolvo_tab; j++) {
QHash<QString, QString> repltable;
QList<quint32> psp = randSeq(1 << len_block, 0b10000000011011, 13);
for(quint32 i = 0; i < 1 << len_block; i++ ) { //заполнение таблицы
repltable[QByteArray::number(i, 2).rightJustified(len_block, '0')] =
QByteArray::number(psp[i]-1, 2).rightJustified(len_block, '0');
}
for(quint32 k = j * len_block; k < ldataString->length(); k += len_block * kolvo_tab)
ldataString->replace(k, len_block, repltable.value(ldataString->mid(k, len_block)));
}
for(quint32 i = 0; i < ldataString->length(); i += 8)
*(res.bits() + i/8) = (uchar)ldataString->mid(i, 8).toUInt(0, 2);
ui->modlabel_2->setPixmap(QPixmap::fromImage(res));
delete ldataString;
}
else if(ui->radioButton_3->isChecked()){
QString *ldataString = new QString(*dataString); //копируем dataString в ldataString, чтобы dataString не изменилась
//quint32 kolvo_tab = ui->spinBox->text().toUInt(); //для 2 режима
quint32 kolvo_tab = (dataString->length()) / len_block; //для 3 режима
for(quint32 j = 0; j < kolvo_tab; j++) {
QHash<QString, QString> repltable;
QList<quint32> psp = randSeq(1 << len_block, 0b10000000011011, 13);
for(quint32 i = 0; i < 1 << len_block; i++ ) { //заполнение таблицы
repltable[QByteArray::number(i, 2).rightJustified(len_block, '0')] =
QByteArray::number(psp[i]-1, 2).rightJustified(len_block, '0');
}
for(quint32 k = j * len_block; k < ldataString->length(); k += len_block * kolvo_tab)
ldataString->replace(k, len_block, repltable.value(ldataString->mid(k, len_block)));
}
for(quint32 i = 0; i < ldataString->length(); i += 8)
*(res.bits() + i/8) = (uchar)ldataString->mid(i, 8).toUInt(0, 2);
ui->modlabel_2->setPixmap(QPixmap::fromImage(res));
delete ldataString;
}
}
});
QObject::connect(ui->pushButton_5, &QPushButton::clicked, [=](){
switch (ui->tabWidget->tabBar()->currentIndex()){
case 0:{
QString path = QFileDialog::getSaveFileName(this, tr("Сохранить"), "./", tr("(*.bmp)"));
QFile file(path);
if(!file.open(QIODevice::WriteOnly)){
QMessageBox::critical(this, tr("Ошибка"), tr("Ошибка сохранения"), QMessageBox::Ok, QMessageBox::NoButton);
return -1;
}
ui->modlabel->pixmap()->save(&file, "BMP");
file.close();
break;
}
case 1:{
QString path = QFileDialog::getSaveFileName(this, tr("Сохранить"), "./", tr("(*.bmp)"));
QFile file(path);
if(!file.open(QIODevice::WriteOnly)){
QMessageBox::critical(this, tr("Ошибка"), tr("Ошибка сохранения"), QMessageBox::Ok, QMessageBox::NoButton);
return -1;
}
ui->modlabel_2->pixmap()->save(&file, "BMP");
file.close();
break;
}
}
});
}
MainWindow::~MainWindow()
{
delete ui;
}
QList<quint32> MainWindow::randSeq(quint32 k, quint32 poli, quint32 st) //st -- степень многочлена
{
QList<quint32> res;
quint32 n=1, randd;
n <<= st;
poli = poli & (((n << 1) - 1) >> 1); //убирается первая единица из полинома
//должно быть k < n !!!
qsrand(std::chrono::duration_cast<std::chrono::nanoseconds> //Инициализация генератора
(std::chrono::system_clock::now().time_since_epoch()).count()); //с помощью <chrono>
randd=qrand() % (n - 1) + 1; //иницилизирующее число (0 < randd < n)
for(quint32 i = 0; i<n-1; i++){
quint32 tmp = poli & randd;
quint32 sum = 0;
while(tmp != 0){
sum ^= (tmp & 1);
tmp >>= 1;
}
randd = (randd >> 1) | (sum << (st - 1));
if(randd <= k)
res << randd;
}
return res;
}
QVector<quint32> MainWindow::dividers(quint32 n)
{
if (n == 0)
return QVector<quint32>();
QVector<quint32> divs(1, n);
// Если проверяем 1 - выводим уже готовый вектор, содержащий только саму 1
if (n == 1)
return divs;
// делителем n
for (quint32 d = n / 2; d > 1; --d)
// Проверка на делимость нацело
if (n % d == 0)
// Если очередное число является делителем, добавляем его в вектор
divs.push_back(d);
return divs;
}
QString MainWindow::sel_poli(quint32 len_key) //выбор полинома
{
QList<QString> poli_list;
poli_list << "x5+x2+1" << "x6+x1+1" << "x7+x3+1" << "x9+x4+1" << "x10+x3+1"
<< "x11+x2+1" << "x12+x6+x4+x1+1" << "x13+x4+x3+x1+1" << "x14+x10+x6+x1+1" << "x15+x1+1"
<< "x16+x12+x3+x1+1" << "x17+x3+1" << "x18+x7+1" << "x19+x5+x2+x1+1" << "x20+x3+1"
<< "x21+x2+1" << "x22+x1+1" << "x23+x5+1" << "x25+x3+1" << "x28+x3+1"
<< "x29+x2+1" << "x31+x3+1";// << "x33+x13+1" << "x35+x2+1" << "x36+x11+1"
// << "x39+x4+1" << "x41+x20+1" << "x47+x20+1" << "x49+x22+1";
quint32 bit_key = 0; //количество бит в длине ключа
for(quint32 tmp = len_key; tmp != 0; bit_key++){
tmp >>= 1;
}
QString poli;
for(int i = 0; i < poli_list.size(); i++){
poli = poli_list.at(i);
if(poli.section('+', 0, 0).remove(QChar('x')).toUInt() > bit_key)
return poli;
}
return "!";
}