/**
* Returns decrypted note text if it is encrypted
* The crypto key has to be set in the object
*/
QString Note::getDecryptedNoteText() {
QString noteText = this->noteText;
QString encryptedNoteText = getEncryptedNoteText();
if (encryptedNoteText == "") {
return noteText;
}
// decrypt the note text
BotanWrapper botanWrapper;
botanWrapper.setPassword(cryptoPassword);
botanWrapper.setSalt(BOTAN_SALT);
QString decryptedNoteText = botanWrapper.Decrypt(encryptedNoteText);
// fallback to SimpleCrypt
if (decryptedNoteText == "") {
SimpleCrypt *crypto = new SimpleCrypt(static_cast<quint64>(cryptoKey));
decryptedNoteText = crypto->decryptToString(encryptedNoteText);
}
if (decryptedNoteText == "") {
return noteText;
}
// get regular expression for the encrypted string
QRegularExpression re = getEncryptedNoteTextRegularExpression();
// replace the encrypted text with the decrypted text
noteText.replace(re, decryptedNoteText);
return noteText;
}
/**
* Encrypts the note text with the note's crypto key
*/
QString Note::encryptNoteText() {
// split the text into a string list
QStringList noteTextLines = this->noteText.split(
QRegExp("(\\r\\n)|(\\n\\r)|\\r|\\n"));
// keep the first two lines unencrypted
noteText = noteTextLines.at(0) + "\n" + noteTextLines.at(1) + "\n\n" +
QString(NOTE_TEXT_ENCRYPTION_PRE_STRING) + "\n";
// remove the first two lines for encryption
noteTextLines.removeFirst();
noteTextLines.removeFirst();
// remove the 3rd line too if it is empty
if (noteTextLines.at(0) == "") {
noteTextLines.removeFirst();
}
// join the remaining lines
QString text = noteTextLines.join("\n");
// empty notes will be detected as "can't be decrypted",
// so we will add a space
if (text.isEmpty()) {
text = " ";
}
// encrypt the text
BotanWrapper botanWrapper;
botanWrapper.setPassword(cryptoPassword);
botanWrapper.setSalt(BOTAN_SALT);
QString encryptedText = botanWrapper.Encrypt(text);
// SimpleCrypt *crypto = new SimpleCrypt(static_cast<quint64>(cryptoKey));
// QString encryptedText = crypto->encryptToString(text);
// add the encrypted text to the new note text
noteText += encryptedText + "\n" +
QString(NOTE_TEXT_ENCRYPTION_POST_STRING);
// store note
store();
return noteText;
}
/**
* Checks if note text can be decrypted
*/
bool Note::canDecryptNoteText() {
QString encryptedNoteText = getEncryptedNoteText();
if (encryptedNoteText == "") {
return false;
}
// decrypt the note text
BotanWrapper botanWrapper;
botanWrapper.setPassword(cryptoPassword);
botanWrapper.setSalt(BOTAN_SALT);
QString decryptedNoteText = botanWrapper.Decrypt(encryptedNoteText);
// fallback to SimpleCrypt
if (decryptedNoteText == "") {
SimpleCrypt *crypto = new SimpleCrypt(static_cast<quint64>(cryptoKey));
decryptedNoteText = crypto->decryptToString(encryptedNoteText);
}
return decryptedNoteText != "";
}
void Krypta::Decrypt(){
if (globFile == "" || ui->txtFileChosen->text() == ""){
QMessageBox msgBox;
msgBox.setText("Error!");
msgBox.setInformativeText("Please choose a file to decrypt!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
} else if (!globFile.endsWith(".Krypt")){
QMessageBox msgBox;
msgBox.setText("File not encrypted");
msgBox.setInformativeText("The File is not encrypted & therefore doesn't need decrypting!\nPlease choose a file that has been encrypted by this program!\nFiles encrypted with this program will bear the .Krypt extension!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
} else if (ui->txtPass->text() == ""){
QMessageBox msgBox;
msgBox.setText("Error");
msgBox.setInformativeText("Please enter a password!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else if (globFile.endsWith(".KryptV")){
QMessageBox msgBox;
msgBox.setText("Encrypted Volume File!");
msgBox.setInformativeText("This File is an encrypted volume! Please encrypt/decrypt volumes by clicking the Volumes button.");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else if (globFile == globKeyFile){
QMessageBox msgBox;
msgBox.setText("Error");
msgBox.setInformativeText("The file to be decrypted cannot be used as a keyfile!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else{
if(ui->chk1Pass->isChecked() && ui->chkKeyfile->isChecked()){
if (globKeyFile == "" || ui->txtKeyfile->text() == ""){
QMessageBox msgBox;
msgBox.setText("No Keyfile");
msgBox.setInformativeText("Please choose a keyfile!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else{
QString fileName = QFileDialog::getSaveFileName(this, "Save a file", "", "Any (*.*)");
BotanWrapper cWrapper;
QString cEncrypted = globFile;
QString cDecrypted = fileName;
QString hashedPassword = (ui->txtPass->text() + globKeyFile);
QString skein512 = QSkeinHash(hashedPassword, QSkeinHash::hb512).toHexString();
cWrapper.setPassword(skein512);
cWrapper.setPassword2(skein512);
cWrapper.setPassword3(skein512);
cWrapper.DecryptFile(cEncrypted, cDecrypted);
if(ui->chkDelOrig->isChecked()){
QFile orig(globFile);
orig.remove();
}
this->Clear();
}
} else if (ui->chk1Pass->isChecked() && !ui->chkKeyfile->isChecked()){
QString fileName = QFileDialog::getSaveFileName(this, "Save a file", "", "Any (*.*)");
BotanWrapper cWrapper;
QString cEncrypted = globFile;
QString cDecrypted = fileName;
cWrapper.setPassword(ui->txtPass->text());
cWrapper.setPassword2(ui->txtPass->text());
cWrapper.setPassword3(ui->txtPass->text());
cWrapper.DecryptFile(cEncrypted, cDecrypted);
if(ui->chkDelOrig->isChecked()){
QFile orig(globFile);
orig.remove();
}
this->Clear();
} else if (ui->chkKeyfile->isChecked() && !ui->chk1Pass->isChecked()){
if (globKeyFile == "" || ui->txtKeyfile->text() == ""){
QMessageBox msgBox;
msgBox.setText("No Keyfile");
msgBox.setInformativeText("Please choose a keyfile!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else if (ui->txtPass2->text() == "" || ui->txtPass3->text() == ""){
QMessageBox msgBox;
msgBox.setText("Missing Password(s)");
msgBox.setInformativeText("Please enter a second and/or third password!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else{
QString fileName = QFileDialog::getSaveFileName(this, "Save a file", "", "Any (*.*)");//globFile.replace(QString(".Krypt"), QString(""))
BotanWrapper cWrapper;
QString cEncrypted = globFile;
QString cDecrypted = fileName;
QString hashedPassword1 = (ui->txtPass->text() + globKeyFile);
QString hashedPassword2 = (ui->txtPass2->text() + globKeyFile);
QString hashedPassword3 = (ui->txtPass3->text() + globKeyFile);
QString skein5121 = QSkeinHash(hashedPassword1, QSkeinHash::hb512).toHexString();
QString skein5122 = QSkeinHash(hashedPassword2, QSkeinHash::hb512).toHexString();
QString skein5123 = QSkeinHash(hashedPassword3, QSkeinHash::hb512).toHexString();
cWrapper.setPassword(skein5121);
cWrapper.setPassword2(skein5122);
cWrapper.setPassword3(skein5123);
cWrapper.DecryptFile(cEncrypted, cDecrypted);
if(ui->chkDelOrig->isChecked()){
QFile orig(globFile);
orig.remove();
}
this->Clear();
}
} else{
if(ui->txtPass2->text() == "" || ui->txtPass3->text() == ""){
QMessageBox msgBox;
msgBox.setText("Missing Password(s)");
msgBox.setInformativeText("Please enter a second and/or third password!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
msgBox.exec();
this->Clear();
} else{
QString fileName = QFileDialog::getSaveFileName(this, "Save a file", "", "Any (*.*)");
BotanWrapper cWrapper;
QString cEncrypted = globFile;
QString cDecrypted = fileName;
cWrapper.setPassword(ui->txtPass->text());
cWrapper.setPassword2(ui->txtPass2->text());
cWrapper.setPassword3(ui->txtPass3->text());
cWrapper.DecryptFile(cEncrypted, cDecrypted);
if(ui->chkDelOrig->isChecked()){
QFile orig(globFile);
orig.remove();
}
this->Clear();
}
}
}
}
void ExtractVolume::ExtractVol(){
QString ZipFile = globFile;
qDebug() << ZipFile;
if(ZipFile.endsWith(".KryptV")){
if (ui->txtPass1->text() == ""){
QMessageBox msgBox;
msgBox.setText("Error");
// msgBox.setIcon();
msgBox.setInformativeText("Please enter a password!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
// return 0;
this->Clear();
} else if(!ui->chk1Pass->isChecked() && (ui->txtPass2->text() == "" || ui->txtPass3->text() == "")){
QMessageBox msgBox;
msgBox.setText("Missing Password(s)");
// msgBox.setIcon();
msgBox.setInformativeText("Please enter a second and/or third password!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
//return 0;
this->Clear();
} else{
if (ui->chk1Pass->isChecked() && ui->chkUseKeyfile->isChecked()){
QString NewDir = QFileDialog::getSaveFileName(this, "Save the extracted volume", "", "Any (*.*)");
QFileInfo name = NewDir;
QString base = name.baseName();
QString tempZip = dir + "/" + base + ".zip";
BotanWrapper cWrapper;
QString hashedPassword = (ui->txtPass1->text() + globKeyFile);
QString skein512 = QSkeinHash(hashedPassword, QSkeinHash::hb512).toHexString();
cWrapper.setPassword(skein512);
cWrapper.setPassword2(skein512);
cWrapper.setPassword3(skein512);
cWrapper.DecryptFile(ZipFile, tempZip);
//List the contents of a zip file
ListContents(tempZip);
//Decompress an archive to a directory
DecompressDir(tempZip,NewDir);
QFile elIF(tempZip);
elIF.remove();
QMessageBox msgBox;
msgBox.setText("Success!");
// msgBox.setIcon();
msgBox.setInformativeText("Volume successfully extracted!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
//return 0;
this->Clear();
} else if(ui->chk1Pass->isChecked() && !ui->chkUseKeyfile->isChecked()){
QString NewDir = QFileDialog::getSaveFileName(this, "Save the extracted volume", "", "Any (*.*)");
QFileInfo name = NewDir;
QString base = name.baseName();
QString tempZip = dir + "/" + base + ".zip";
BotanWrapper cWrapper;
cWrapper.setPassword(ui->txtPass1->text());
cWrapper.setPassword2(ui->txtPass1->text());
cWrapper.setPassword3(ui->txtPass1->text());
cWrapper.DecryptFile(ZipFile, tempZip);
//List the contents of a zip file
ListContents(tempZip);
//Decompress an archive to a directory
DecompressDir(tempZip,NewDir);
QFile elIF(tempZip);
elIF.remove();
QMessageBox msgBox;
msgBox.setText("Success!");
// msgBox.setIcon();
msgBox.setInformativeText("Volume successfully extracted!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
//return 0;
this->Clear();
} else if(ui->chkUseKeyfile->isChecked() && !ui->chk1Pass->isChecked()){
QString NewDir = QFileDialog::getSaveFileName(this, "Save the extracted volume", "", "Any (*.*)");
QFileInfo name = NewDir;
QString base = name.baseName();
QString tempZip = dir + "/" + base + ".zip";
BotanWrapper cWrapper;
QString hashedPassword = (ui->txtPass1->text() + globKeyFile);
QString hashedPassword2 = (ui->txtPass2->text() + globKeyFile);
QString hashedPassword3 = (ui->txtPass3->text() + globKeyFile);
QString skein512 = QSkeinHash(hashedPassword, QSkeinHash::hb512).toHexString();
QString skein5122 = QSkeinHash(hashedPassword2, QSkeinHash::hb512).toHexString();
QString skein5123 = QSkeinHash(hashedPassword3, QSkeinHash::hb512).toHexString();
cWrapper.setPassword(skein512);
cWrapper.setPassword2(skein5122);
cWrapper.setPassword3(skein5123);
cWrapper.DecryptFile(ZipFile, tempZip);
//List the contents of a zip file
ListContents(tempZip);
//Decompress an archive to a directory
DecompressDir(tempZip,NewDir);
QFile elIF(tempZip);
elIF.remove();
QMessageBox msgBox;
msgBox.setText("Success!");
// msgBox.setIcon();
msgBox.setInformativeText("Volume successfully extracted!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
//return 0;
this->Clear();
} else{
QString NewDir = QFileDialog::getSaveFileName(this, "Save the extracted volume", "", "Any (*.*)");
QFileInfo name = NewDir;
QString base = name.baseName();
QString tempZip = dir + "/" + base + ".zip";
BotanWrapper cWrapper;
cWrapper.setPassword(ui->txtPass1->text());
cWrapper.setPassword2(ui->txtPass2->text());
cWrapper.setPassword3(ui->txtPass3->text());
cWrapper.DecryptFile(ZipFile, tempZip);
//List the contents of a zip file
ListContents(tempZip);
//Decompress an archive to a directory
DecompressDir(tempZip,NewDir);
QFile elIF(tempZip);
elIF.remove();
QMessageBox msgBox;
msgBox.setText("Success!");
// msgBox.setIcon();
msgBox.setInformativeText("Volume successfully extracted!");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
//return 0;
this->Clear();
}}} else{
QMessageBox msgBox;
msgBox.setText("Error!");
// msgBox.setIcon();
msgBox.setInformativeText("The selected file is not a volume created with this program and cannot\n be extracted.");
msgBox.setStandardButtons(QMessageBox::Ok);
msgBox.setDefaultButton(QMessageBox::Ok);
int ret = msgBox.exec();
//return 0;
this->Clear();
}
}
