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Ecnryptable note

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This commit is contained in:
Aurélie Delhaie
2022-02-08 17:59:05 +01:00
parent d661cc7b42
commit 64d216fcf2
21 changed files with 294 additions and 91 deletions
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2
src/frames/aboutdialog.ui
View File

@@ -71,7 +71,7 @@
<item>
<widget class="QLabel" name="label_3">
<property name="text">
<string>Version 1.1.0.0</string>
<string>Version 1.2.0.0</string>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>

23
src/frames/mainwindow.cpp
View File

@@ -14,6 +14,7 @@ MainWindow::MainWindow(QWidget *parent)
connect(ui->noteList, &QListWidget::currentRowChanged, this, &MainWindow::selectionChanged);
connect(ui->titleEdit, &QLineEdit::textChanged, this, &MainWindow::titleChanged);
connect(ui->contentEdit, &QPlainTextEdit::textChanged, this, &MainWindow::contentChanged);
connect(ui->actionEncrypt, &QAction::triggered, this, &MainWindow::encryptNote);
const QFont fixedFont = QFontDatabase::systemFont(QFontDatabase::FixedFont);
ui->contentEdit->setFont(fixedFont);
this->savemng = new SaveManager();
@@ -55,8 +56,13 @@ void MainWindow::selectionChanged(int i)
ui->titleEdit->setDisabled(false);
ui->contentEdit->setDisabled(false);
ui->titleEdit->setText(n->getTitle());
ui->contentEdit->setPlainText(n->getContent());
ui->markdownViewer->setMarkdown(n->getContent());
if (n->isEncrypted())
{
ui->contentEdit->setPlainText(n->getEncryptedContent("azertyuiop"));
} else {
ui->contentEdit->setPlainText(n->getContent());
}
ui->markdownViewer->setMarkdown(ui->contentEdit->toPlainText());
}
void MainWindow::removeSelected()
@@ -71,6 +77,7 @@ void MainWindow::removeSelected()
void MainWindow::save()
{
ui->actionSave->setDisabled(true);
if (this->currentIndex > -1)
{
Note *n = this->savemng->getNoteByIndex(this->currentIndex);
@@ -89,6 +96,7 @@ void MainWindow::titleChanged()
n->setTitle(ui->titleEdit->text());
ui->noteList->item(this->currentIndex)->setText(ui->titleEdit->text());
}
ui->actionSave->setDisabled(false);
timer->start(1000);
}
@@ -99,6 +107,16 @@ void MainWindow::showAboutBox()
dialog.exec();
}
void MainWindow::encryptNote()
{
if (this->currentIndex > -1)
{
Note *n = this->savemng->getNoteByIndex(this->currentIndex);
n->encrypt("azertyuiop");
savemng->flushSave();
}
}
void MainWindow::contentChanged()
{
timer->stop();
@@ -108,6 +126,7 @@ void MainWindow::contentChanged()
n->setContent(ui->contentEdit->toPlainText());
ui->markdownViewer->setMarkdown(ui->contentEdit->toPlainText());
}
ui->actionSave->setDisabled(false);
timer->start(1000);
}

1
src/frames/mainwindow.h
View File

@@ -30,6 +30,7 @@ private slots:
void contentChanged();
void titleChanged();
void showAboutBox();
void encryptNote();
private:
Ui::MainWindow *ui;

59
src/frames/mainwindow.ui
View File

@@ -120,15 +120,24 @@
</layout>
</widget>
<widget class="QToolBar" name="toolBar">
<property name="enabled">
<bool>true</bool>
</property>
<property name="maximumSize">
<size>
<width>16777215</width>
<height>33</height>
<height>96</height>
</size>
</property>
<property name="windowTitle">
<string>toolBar</string>
</property>
<property name="movable">
<bool>false</bool>
</property>
<property name="toolButtonStyle">
<enum>Qt::ToolButtonTextUnderIcon</enum>
</property>
<attribute name="toolBarArea">
<enum>TopToolBarArea</enum>
</attribute>
@@ -140,12 +149,16 @@
<addaction name="separator"/>
<addaction name="actionSave"/>
<addaction name="separator"/>
<addaction name="actionLock"/>
<addaction name="actionUnlock"/>
<addaction name="actionEncrypt"/>
<addaction name="separator"/>
<addaction name="actionAbout"/>
</widget>
<action name="actionAdd">
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_add_circle_outline_black_18dp.png</normaloff>:/icon/resources/outline_add_circle_outline_black_18dp.png</iconset>
<normaloff>:/icon/resources/outline_add_circle_outline_black_48dp.png</normaloff>:/icon/resources/outline_add_circle_outline_black_48dp.png</iconset>
</property>
<property name="text">
<string>Add</string>
@@ -157,16 +170,19 @@
</property>
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_delete_forever_black_18dp.png</normaloff>:/icon/resources/outline_delete_forever_black_18dp.png</iconset>
<normaloff>:/icon/resources/outline_delete_forever_black_48dp.png</normaloff>:/icon/resources/outline_delete_forever_black_48dp.png</iconset>
</property>
<property name="text">
<string>Remove</string>
</property>
</action>
<action name="actionSave">
<property name="enabled">
<bool>false</bool>
</property>
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_save_black_18dp.png</normaloff>:/icon/resources/outline_save_black_18dp.png</iconset>
<normaloff>:/icon/resources/outline_save_black_48dp.png</normaloff>:/icon/resources/outline_save_black_48dp.png</iconset>
</property>
<property name="text">
<string>Save</string>
@@ -175,12 +191,45 @@
<action name="actionAbout">
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_help_outline_black_18dp.png</normaloff>:/icon/resources/outline_help_outline_black_18dp.png</iconset>
<normaloff>:/icon/resources/outline_help_outline_black_48dp.png</normaloff>:/icon/resources/outline_help_outline_black_48dp.png</iconset>
</property>
<property name="text">
<string>About</string>
</property>
</action>
<action name="actionLock">
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_lock_black_48dp.png</normaloff>:/icon/resources/outline_lock_black_48dp.png</iconset>
</property>
<property name="text">
<string>Lock</string>
</property>
<property name="visible">
<bool>false</bool>
</property>
</action>
<action name="actionUnlock">
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_lock_open_black_48dp.png</normaloff>:/icon/resources/outline_lock_open_black_48dp.png</iconset>
</property>
<property name="text">
<string>Unlock</string>
</property>
<property name="visible">
<bool>false</bool>
</property>
</action>
<action name="actionEncrypt">
<property name="icon">
<iconset resource="../../icons.qrc">
<normaloff>:/icon/resources/outline_shield_black_48dp.png</normaloff>:/icon/resources/outline_shield_black_48dp.png</iconset>
</property>
<property name="text">
<string>Encrypt</string>
</property>
</action>
</widget>
<resources>
<include location="../../icons.qrc"/>

107
src/models/note.cpp
View File

@@ -2,27 +2,35 @@
Note::Note()
{
QUuid uid = QUuid::createUuid();
this->uuid = uid.toString(QUuid::StringFormat::WithoutBraces);
}
QJsonObject Note::toJson()
{
QJsonObject o;
o["uuid"] = this->uuid;
o["title"] = this->title;
o["content"] = this->content;
o["encrypted"] = this->encrypted;
return o;
}
Note *Note::fromJson(QJsonObject o)
{
Note *n = new Note();
n->uuid = o["uuid"].toString(n->uuid);
n->title = o["title"].toString();
n->content = o["content"].toString();
n->encrypted = o["encrypted"].toBool(false);
return n;
}
QString Note::getUuid()
{
return uuid;
}
QString Note::getTitle()
{
return title;
@@ -30,7 +38,47 @@ QString Note::getTitle()
QString Note::getContent()
{
return content;
if (!this->encrypted)
{
return content;
}
return "";
}
QString Note::getEncryptedContent(QString passwd)
{
if (this->encrypted)
{
using namespace CryptoPP;
std::string password = passwd.toStdString();
QString bytes = QByteArray::fromBase64(QByteArray::fromStdString(this->content.toStdString()));
std::string encoded = bytes.toStdString();
std::string iv = encoded.substr(0, TAG_SIZE);
std::string cipher = encoded.substr(TAG_SIZE + 1, encoded.length());
std::string recovered;
try {
GCM< AES >::Decryption d;
d.SetKeyWithIV((const unsigned char*)password.c_str(), sizeof(password.c_str()), (const unsigned char*)iv.c_str(), sizeof(iv.c_str()));
AuthenticatedDecryptionFilter df( d,
new StringSink(recovered),
AuthenticatedDecryptionFilter::DEFAULT_FLAGS, TAG_SIZE
);
StringSource ss2(cipher, true,
new Redirector(df)
);
return QString::fromStdString(recovered);
} catch (CryptoPP::Exception& e) {
std::cout << e.GetWhat() << "\n";
}
}
return "";
}
bool Note::isEncrypted()
{
return this->encrypted;
}
void Note::setTitle(QString value)
@@ -40,6 +88,57 @@ void Note::setTitle(QString value)
void Note::setContent(QString value)
{
if (!this->encrypted) {
this->content = value;
}
}
// TODO encrypt avec le mot de passe
bool Note::setEncryptedContent(QString value, QString passwd)
{
if (this->encrypted) {
using namespace CryptoPP;
AutoSeededRandomPool prng;
std::string password = passwd.toStdString();
std::string pdata = value.toStdString();
std::string cipher, encoded;
SecByteBlock key(AES::MAX_KEYLENGTH + AES::BLOCKSIZE);
SecByteBlock iv(AES::BLOCKSIZE);
prng.GenerateBlock(iv, iv.size());
try
{
GCM<AES>::Encryption e;
e.SetKeyWithIV(key, sizeof(key), iv, sizeof(iv));
StringSource ss1(pdata, true,
new AuthenticatedEncryptionFilter(e,
new StringSink(cipher), false, TAG_SIZE
)
);
std::string s(reinterpret_cast< char const* >(iv.data())) ;
encoded = s + cipher;
auto bytes = QByteArray::fromStdString(encoded);
this->content = bytes.toBase64();
return true;
}
catch(CryptoPP::Exception& e)
{
std::cout << e.GetWhat() << "\n";
return false;
}
}
return false;
}
void Note::encrypt(QString password)
{
if (!this->encrypted && (password.length() >= 6)) {
this->encrypted = true;
if (!setEncryptedContent(this->content, password))
{
this->encrypted = false;
}
}
}

25
src/models/note.h
View File

@@ -1,8 +1,25 @@
#ifndef NOTE_H
#define NOTE_H
#define TAG_SIZE 12
#include <iostream>
#include <string>
#include <QString>
#include <QJsonObject>
#include <QUuid>
#include <QMessageBox>
#include <crypto++/modes.h>
#include <crypto++/aes.h>
#include <crypto++/filters.h>
#include <crypto++/cryptlib.h>
#include <crypto++/sha.h>
#include <crypto++/hkdf.h>
#include <crypto++/osrng.h>
#include <crypto++/gcm.h>
#include <crypto++/rijndael.h>
class Note
{
@@ -12,15 +29,23 @@ public:
QJsonObject toJson();
static Note* fromJson(QJsonObject o);
QString getUuid();
QString getTitle();
QString getContent();
QString getEncryptedContent(QString passwd);
bool isEncrypted();
void setTitle(QString value);
void setContent(QString value);
bool setEncryptedContent(QString value, QString passwd);
void encrypt(QString password);
private:
QString uuid;
QString title;
QString content;
bool encrypted;
};
#endif // NOTE_H

4
src/services/savemanager.cpp
View File

@@ -8,6 +8,10 @@ SaveManager::SaveManager()
SaveManager::~SaveManager()
{
flushSave();
foreach (Note *n, notes)
{
delete n;
}
}
void SaveManager::flushSave()