Merge pull request #70 from saturneric/dev/2.0.8/saturnericv2.0.9

Develop 2.0.9.1

4 files changed, 1087 insertions, 0 deletions

diff --git a/src/ui/dialog/key_generate/KeygenDialog.cpp b/src/ui/dialog/key_generate/KeygenDialog.cpp
new file mode 100644
index 00000000..42160ec9
--- /dev/null
+++ b/src/ui/dialog/key_generate/KeygenDialog.cpp
@@ -0,0 +1,407 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GpgFrontend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * All the source code of GpgFrontend was modified and released by
+ * Saturneric<[email protected]> starting on May 12, 2021.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#include "KeygenDialog.h"
+
+#include "core/function/GlobalSettingStation.h"
+#include "core/function/gpg/GpgKeyOpera.h"
+#include "dialog/WaitingDialog.h"
+#include "ui/SignalStation.h"
+
+namespace GpgFrontend::UI {
+
+KeyGenDialog::KeyGenDialog(QWidget* parent)
+    : GeneralDialog(typeid(KeyGenDialog).name(), parent) {
+  button_box_ =
+      new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+
+  auto& settings = GlobalSettingStation::GetInstance().GetUISettings();
+
+  // max expire date time
+  bool longer_expiration_date = false;
+  try {
+    longer_expiration_date = settings.lookup("general.longer_expiration_date");
+    LOG(INFO) << "longer_expiration_date" << longer_expiration_date;
+
+  } catch (...) {
+    LOG(ERROR) << _("Setting Operation Error") << _("longer_expiration_date");
+  }
+
+  max_date_time_ = longer_expiration_date
+                       ? QDateTime::currentDateTime().toLocalTime().addYears(30)
+                       : QDateTime::currentDateTime().toLocalTime().addYears(2);
+
+  this->setWindowTitle(_("Generate Key"));
+  this->setModal(true);
+
+  connect(this, &KeyGenDialog::SignalKeyGenerated, SignalStation::GetInstance(),
+          &SignalStation::SignalKeyDatabaseRefresh);
+
+  generate_key_dialog();
+}
+
+void KeyGenDialog::generate_key_dialog() {
+  key_usage_group_box_ = create_key_usage_group_box();
+
+  auto* groupGrid = new QGridLayout(this);
+  groupGrid->addWidget(create_basic_info_group_box(), 0, 0);
+  groupGrid->addWidget(key_usage_group_box_, 1, 0);
+
+  auto* nameList = new QWidget(this);
+  nameList->setLayout(groupGrid);
+
+  auto* vbox2 = new QVBoxLayout();
+  vbox2->addWidget(nameList);
+  vbox2->addWidget(error_label_);
+  vbox2->addWidget(button_box_);
+
+  this->setLayout(vbox2);
+
+  set_signal_slot();
+
+  refresh_widgets_state();
+}
+
+void KeyGenDialog::slot_key_gen_accept() {
+  std::stringstream error_stream;
+
+  /**
+   * check for errors in keygen dialog input
+   */
+  if ((name_edit_->text()).size() < 5) {
+    error_stream << "  " << _("Name must contain at least five characters.")
+                 << std::endl;
+  }
+  if (email_edit_->text().isEmpty() ||
+      !check_email_address(email_edit_->text())) {
+    error_stream << "  " << _("Please give a email address.") << std::endl;
+  }
+
+  /**
+   * primary keys should have a reasonable expiration date (no more than 2 years
+   * in the future)
+   */
+  if (date_edit_->dateTime() > max_date_time_) {
+    error_stream << "  " << _("Expiration time too long.") << std::endl;
+  }
+
+  auto err_string = error_stream.str();
+
+  if (err_string.empty()) {
+    /**
+     * create the string for key generation
+     */
+    gen_key_info_->SetName(name_edit_->text().toStdString());
+    gen_key_info_->SetEmail(email_edit_->text().toStdString());
+    gen_key_info_->SetComment(comment_edit_->text().toStdString());
+
+    gen_key_info_->SetKeyLength(key_size_spin_box_->value());
+
+    if (expire_check_box_->checkState()) {
+      gen_key_info_->SetNonExpired(true);
+    } else {
+      gen_key_info_->SetExpireTime(
+          boost::posix_time::from_time_t(date_edit_->dateTime().toTime_t()));
+    }
+
+    GpgGenKeyResult result;
+    gpgme_error_t error = false;
+    auto thread = QThread::create([&]() {
+      error = GpgKeyOpera::GetInstance().GenerateKey(gen_key_info_, result);
+    });
+    thread->start();
+
+    auto* dialog = new WaitingDialog(_("Generating"), this);
+    dialog->show();
+
+    while (thread->isRunning()) {
+      QCoreApplication::processEvents();
+    }
+
+    dialog->close();
+
+    LOG(INFO) << "generate done";
+
+    if (gpgme_err_code(error) == GPG_ERR_NO_ERROR) {
+      auto* msg_box = new QMessageBox((QWidget*)this->parent());
+      msg_box->setAttribute(Qt::WA_DeleteOnClose);
+      msg_box->setStandardButtons(QMessageBox::Ok);
+      msg_box->setWindowTitle(_("Success"));
+      msg_box->setText(_("The new key pair has been generated."));
+      msg_box->setModal(true);
+      msg_box->open();
+
+      LOG(INFO) << "generate success";
+
+      emit SignalKeyGenerated();
+      this->close();
+    } else {
+      QMessageBox::critical(this, _("Failure"), _("Key generation failed."));
+    }
+
+  } else {
+    /**
+     * create error message
+     */
+    error_label_->setAutoFillBackground(true);
+    QPalette error = error_label_->palette();
+    error.setColor(QPalette::Window, "#ff8080");
+    error_label_->setPalette(error);
+    error_label_->setText(err_string.c_str());
+
+    this->show();
+  }
+}
+
+void KeyGenDialog::slot_expire_box_changed() {
+  if (expire_check_box_->checkState()) {
+    date_edit_->setEnabled(false);
+  } else {
+    date_edit_->setEnabled(true);
+  }
+}
+
+QGroupBox* KeyGenDialog::create_key_usage_group_box() {
+  auto* groupBox = new QGroupBox(this);
+  auto* grid = new QGridLayout(this);
+
+  groupBox->setTitle(_("Key Usage"));
+
+  auto* encrypt = new QCheckBox(_("Encryption"), groupBox);
+  encrypt->setTristate(false);
+
+  auto* sign = new QCheckBox(_("Signing"), groupBox);
+  sign->setTristate(false);
+
+  auto* cert = new QCheckBox(_("Certification"), groupBox);
+  cert->setTristate(false);
+
+  auto* auth = new QCheckBox(_("Authentication"), groupBox);
+  auth->setTristate(false);
+
+  key_usage_check_boxes_.push_back(encrypt);
+  key_usage_check_boxes_.push_back(sign);
+  key_usage_check_boxes_.push_back(cert);
+  key_usage_check_boxes_.push_back(auth);
+
+  grid->addWidget(encrypt, 0, 0);
+  grid->addWidget(sign, 0, 1);
+  grid->addWidget(cert, 1, 0);
+  grid->addWidget(auth, 1, 1);
+
+  groupBox->setLayout(grid);
+
+  return groupBox;
+}
+
+void KeyGenDialog::slot_encryption_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowEncryption(false);
+  } else {
+    gen_key_info_->SetAllowEncryption(true);
+  }
+}
+
+void KeyGenDialog::slot_signing_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowSigning(false);
+  } else {
+    gen_key_info_->SetAllowSigning(true);
+  }
+}
+
+void KeyGenDialog::slot_certification_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowCertification(false);
+  } else {
+    gen_key_info_->SetAllowCertification(true);
+  }
+}
+
+void KeyGenDialog::slot_authentication_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowAuthentication(false);
+  } else {
+    gen_key_info_->SetAllowAuthentication(true);
+  }
+}
+
+void KeyGenDialog::slot_activated_key_type(int index) {
+  qDebug() << "key type index changed " << index;
+
+  gen_key_info_->SetAlgo(
+      this->key_type_combo_box_->itemText(index).toStdString());
+  refresh_widgets_state();
+}
+
+void KeyGenDialog::refresh_widgets_state() {
+  qDebug() << "refresh_widgets_state called";
+
+  if (gen_key_info_->IsAllowEncryption())
+    key_usage_check_boxes_[0]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[0]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeEncryption())
+    key_usage_check_boxes_[0]->setDisabled(false);
+  else
+    key_usage_check_boxes_[0]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowSigning())
+    key_usage_check_boxes_[1]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[1]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeSigning())
+    key_usage_check_boxes_[1]->setDisabled(false);
+  else
+    key_usage_check_boxes_[1]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowCertification())
+    key_usage_check_boxes_[2]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[2]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeCertification())
+    key_usage_check_boxes_[2]->setDisabled(false);
+  else
+    key_usage_check_boxes_[2]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowAuthentication())
+    key_usage_check_boxes_[3]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[3]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeAuthentication())
+    key_usage_check_boxes_[3]->setDisabled(false);
+  else
+    key_usage_check_boxes_[3]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowNoPassPhrase())
+    no_pass_phrase_check_box_->setDisabled(false);
+  else
+    no_pass_phrase_check_box_->setDisabled(true);
+
+  key_size_spin_box_->setRange(gen_key_info_->GetSuggestMinKeySize(),
+                               gen_key_info_->GetSuggestMaxKeySize());
+  key_size_spin_box_->setValue(gen_key_info_->GetKeyLength());
+  key_size_spin_box_->setSingleStep(gen_key_info_->GetSizeChangeStep());
+}
+
+void KeyGenDialog::set_signal_slot() {
+  connect(button_box_, &QDialogButtonBox::accepted, this,
+          &KeyGenDialog::slot_key_gen_accept);
+  connect(button_box_, &QDialogButtonBox::rejected, this,
+          &KeyGenDialog::reject);
+
+  connect(expire_check_box_, &QCheckBox::stateChanged, this,
+          &KeyGenDialog::slot_expire_box_changed);
+
+  connect(key_usage_check_boxes_[0], &QCheckBox::stateChanged, this,
+          &KeyGenDialog::slot_encryption_box_changed);
+  connect(key_usage_check_boxes_[1], &QCheckBox::stateChanged, this,
+          &KeyGenDialog::slot_signing_box_changed);
+  connect(key_usage_check_boxes_[2], &QCheckBox::stateChanged, this,
+          &KeyGenDialog::slot_certification_box_changed);
+  connect(key_usage_check_boxes_[3], &QCheckBox::stateChanged, this,
+          &KeyGenDialog::slot_authentication_box_changed);
+
+  connect(key_type_combo_box_, qOverload<int>(&QComboBox::currentIndexChanged),
+          this, &KeyGenDialog::slot_activated_key_type);
+
+  connect(no_pass_phrase_check_box_, &QCheckBox::stateChanged, this,
+          [this](int state) -> void {
+            if (state == 0) {
+              gen_key_info_->SetNonPassPhrase(false);
+            } else {
+              gen_key_info_->SetNonPassPhrase(true);
+            }
+          });
+}
+
+bool KeyGenDialog::check_email_address(const QString& str) {
+  return re_email_.match(str).hasMatch();
+}
+
+QGroupBox* KeyGenDialog::create_basic_info_group_box() {
+  error_label_ = new QLabel();
+  name_edit_ = new QLineEdit(this);
+  email_edit_ = new QLineEdit(this);
+  comment_edit_ = new QLineEdit(this);
+  key_size_spin_box_ = new QSpinBox(this);
+  key_type_combo_box_ = new QComboBox(this);
+
+  for (auto& algo : GenKeyInfo::GetSupportedKeyAlgo()) {
+    key_type_combo_box_->addItem(QString::fromStdString(algo));
+  }
+  if (!GenKeyInfo::GetSupportedKeyAlgo().empty()) {
+    key_type_combo_box_->setCurrentIndex(0);
+  }
+
+  date_edit_ =
+      new QDateTimeEdit(QDateTime::currentDateTime().addYears(2), this);
+  date_edit_->setMinimumDateTime(QDateTime::currentDateTime());
+  date_edit_->setMaximumDateTime(max_date_time_);
+  date_edit_->setDisplayFormat("dd/MM/yyyy hh:mm:ss");
+  date_edit_->setCalendarPopup(true);
+  date_edit_->setEnabled(true);
+
+  expire_check_box_ = new QCheckBox(this);
+  expire_check_box_->setCheckState(Qt::Unchecked);
+
+  no_pass_phrase_check_box_ = new QCheckBox(this);
+  no_pass_phrase_check_box_->setCheckState(Qt::Unchecked);
+
+  auto* vbox1 = new QGridLayout;
+
+  vbox1->addWidget(new QLabel(QString(_("Name")) + ": "), 0, 0);
+  vbox1->addWidget(new QLabel(QString(_("Email Address")) + ": "), 1, 0);
+  vbox1->addWidget(new QLabel(QString(_("Comment")) + ": "), 2, 0);
+  vbox1->addWidget(new QLabel(QString(_("Expiration Date")) + ": "), 3, 0);
+  vbox1->addWidget(new QLabel(QString(_("Never Expire")) + ": "), 3, 3);
+  vbox1->addWidget(new QLabel(QString(_("KeySize (in Bit)")) + ": "), 4, 0);
+  vbox1->addWidget(new QLabel(QString(_("Key Type")) + ": "), 5, 0);
+  vbox1->addWidget(new QLabel(QString(_("Non Pass Phrase")) + ": "), 6, 0);
+
+  vbox1->addWidget(name_edit_, 0, 1, 1, 3);
+  vbox1->addWidget(email_edit_, 1, 1, 1, 3);
+  vbox1->addWidget(comment_edit_, 2, 1, 1, 3);
+  vbox1->addWidget(date_edit_, 3, 1);
+  vbox1->addWidget(expire_check_box_, 3, 2);
+  vbox1->addWidget(key_size_spin_box_, 4, 1);
+  vbox1->addWidget(key_type_combo_box_, 5, 1);
+  vbox1->addWidget(no_pass_phrase_check_box_, 6, 1);
+
+  auto basicInfoGroupBox = new QGroupBox();
+  basicInfoGroupBox->setLayout(vbox1);
+  basicInfoGroupBox->setTitle(_("Basic Information"));
+
+  return basicInfoGroupBox;
+}
+
+}  // namespace GpgFrontend::UI
diff --git a/src/ui/dialog/key_generate/KeygenDialog.h b/src/ui/dialog/key_generate/KeygenDialog.h
new file mode 100644
index 00000000..baf10dbf
--- /dev/null
+++ b/src/ui/dialog/key_generate/KeygenDialog.h
@@ -0,0 +1,184 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GpgFrontend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#ifndef __KEYGENDIALOG_H__
+#define __KEYGENDIALOG_H__
+
+#include "core/GpgContext.h"
+#include "core/GpgGenKeyInfo.h"
+#include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
+
+namespace GpgFrontend::UI {
+
+/**
+ * @brief
+ *
+ */
+class KeyGenDialog : public GeneralDialog {
+  Q_OBJECT
+
+ public:
+  /**
+   * @details Constructor of this class
+   *
+   * @param ctx The current GpgME context
+   * @param key The key to show details of
+   * @param parent The parent of this widget
+   */
+  explicit KeyGenDialog(QWidget* parent = nullptr);
+
+ signals:
+  /**
+   * @brief
+   *
+   */
+  void SignalKeyGenerated();
+
+ private:
+  /**
+   * @brief Create a key usage group box object
+   *
+   * @return QGroupBox*
+   */
+  QGroupBox* create_key_usage_group_box();
+
+  /**
+   * @brief Create a basic info group box object
+   *
+   * @return QGroupBox*
+   */
+  QGroupBox* create_basic_info_group_box();
+
+  /**
+   * @brief
+   *
+   */
+  QRegularExpression re_email_{
+      R"((?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\]))"};
+
+  /**
+   * @brief
+   *
+   */
+  QStringList error_messages_;  ///< List of errors occurring when checking
+                                ///< entries of line edits
+  std::unique_ptr<GenKeyInfo> gen_key_info_ =
+      std::make_unique<GenKeyInfo>();  ///<
+  QDialogButtonBox* button_box_;       ///< Box for standard buttons
+  QLabel* error_label_{};              ///< Label containing error message
+  QLineEdit* name_edit_{};             ///< Line edit for the keys name
+  QLineEdit* email_edit_{};            ///< Line edit for the keys email
+  QLineEdit* comment_edit_{};          ///< Line edit for the keys comment
+  QSpinBox* key_size_spin_box_{};      ///< Spinbox for the keys size (in bit)
+  QComboBox* key_type_combo_box_{};    ///< Combobox for Key type
+  QDateTimeEdit* date_edit_{};         ///< Date edit for expiration date
+  QCheckBox* expire_check_box_{};      ///< Checkbox, if key should expire
+  QCheckBox* no_pass_phrase_check_box_{};
+  QGroupBox* key_usage_group_box_{};  ///< Group of Widgets detecting the usage
+                                      ///< of the Key
+  QDateTime max_date_time_;           ///<
+  std::vector<QCheckBox*> key_usage_check_boxes_;  ///< ENCR, SIGN, CERT, AUTH
+
+  /**
+   * @brief
+   *
+   */
+  void generate_key_dialog();
+
+  /**
+   * @details Refresh widgets state by GenKeyInfo
+   */
+  void refresh_widgets_state();
+
+  /**
+   * @brief Set the signal slot object
+   *
+   */
+  void set_signal_slot();
+
+  /**
+   * @brief
+   *
+   * @param str
+   * @return true
+   * @return false
+   */
+  bool check_email_address(const QString& str);
+
+ private slots:
+
+  /**
+   * @details when expirebox was checked/unchecked, enable/disable the
+   * expiration date box
+   */
+  void slot_expire_box_changed();
+
+  /**
+   * @details check all lineedits for false entries. Show error, when there is
+   * one, otherwise generate the key
+   */
+  void slot_key_gen_accept();
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_encryption_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_signing_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_certification_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_authentication_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param index
+   */
+  void slot_activated_key_type(int index);
+};
+
+}  // namespace GpgFrontend::UI
+
+#endif  // __KEYGENDIALOG_H__
diff --git a/src/ui/dialog/key_generate/SubkeyGenerateDialog.cpp b/src/ui/dialog/key_generate/SubkeyGenerateDialog.cpp
new file mode 100644
index 00000000..806c0e50
--- /dev/null
+++ b/src/ui/dialog/key_generate/SubkeyGenerateDialog.cpp
@@ -0,0 +1,344 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GpgFrontend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#include "SubkeyGenerateDialog.h"
+
+#include "core/function/GlobalSettingStation.h"
+#include "core/function/gpg/GpgKeyGetter.h"
+#include "core/function/gpg/GpgKeyOpera.h"
+#include "dialog/WaitingDialog.h"
+#include "ui/SignalStation.h"
+
+namespace GpgFrontend::UI {
+
+SubkeyGenerateDialog::SubkeyGenerateDialog(const KeyId& key_id, QWidget* parent)
+    : GeneralDialog(typeid(SubkeyGenerateDialog).name(), parent),
+      key_(GpgKeyGetter::GetInstance().GetKey(key_id)) {
+  auto& settings = GlobalSettingStation::GetInstance().GetUISettings();
+
+  // max expire date time
+  bool longer_expiration_date = false;
+  try {
+    longer_expiration_date = settings.lookup("general.longer_expiration_date");
+    LOG(INFO) << "longer_expiration_date" << longer_expiration_date;
+
+  } catch (...) {
+    LOG(ERROR) << _("Setting Operation Error") << _("longer_expiration_date");
+  }
+
+  max_date_time_ = longer_expiration_date
+                       ? QDateTime::currentDateTime().toLocalTime().addYears(30)
+                       : QDateTime::currentDateTime().toLocalTime().addYears(2);
+
+  button_box_ =
+      new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+
+  key_usage_group_box_ = create_key_usage_group_box();
+
+  auto* groupGrid = new QGridLayout(this);
+  groupGrid->addWidget(create_basic_info_group_box(), 0, 0);
+  groupGrid->addWidget(key_usage_group_box_, 1, 0);
+
+  auto* nameList = new QWidget(this);
+  nameList->setLayout(groupGrid);
+
+  auto* vbox2 = new QVBoxLayout();
+  vbox2->addWidget(nameList);
+  vbox2->addWidget(error_label_);
+  vbox2->addWidget(button_box_);
+
+  this->setWindowTitle(_("Generate New Subkey"));
+  this->setLayout(vbox2);
+  this->setModal(true);
+
+  connect(this, &SubkeyGenerateDialog::SignalSubKeyGenerated,
+          SignalStation::GetInstance(),
+          &SignalStation::SignalKeyDatabaseRefresh);
+
+  set_signal_slot();
+  refresh_widgets_state();
+}
+
+QGroupBox* SubkeyGenerateDialog::create_key_usage_group_box() {
+  auto* groupBox = new QGroupBox(this);
+  auto* grid = new QGridLayout(this);
+
+  groupBox->setTitle(_("Key Usage"));
+
+  auto* encrypt = new QCheckBox(_("Encryption"), groupBox);
+  encrypt->setTristate(false);
+
+  auto* sign = new QCheckBox(_("Signing"), groupBox);
+  sign->setTristate(false);
+
+  auto* cert = new QCheckBox(_("Certification"), groupBox);
+  cert->setTristate(false);
+
+  auto* auth = new QCheckBox(_("Authentication"), groupBox);
+  auth->setTristate(false);
+
+  key_usage_check_boxes_.push_back(encrypt);
+  key_usage_check_boxes_.push_back(sign);
+  key_usage_check_boxes_.push_back(cert);
+  key_usage_check_boxes_.push_back(auth);
+
+  grid->addWidget(encrypt, 0, 0);
+  grid->addWidget(sign, 0, 1);
+  grid->addWidget(cert, 1, 0);
+  grid->addWidget(auth, 1, 1);
+
+  groupBox->setLayout(grid);
+
+  return groupBox;
+}
+
+QGroupBox* SubkeyGenerateDialog::create_basic_info_group_box() {
+  error_label_ = new QLabel();
+  key_size_spin_box_ = new QSpinBox(this);
+  key_type_combo_box_ = new QComboBox(this);
+
+  for (auto& algo : GenKeyInfo::GetSupportedKeyAlgo()) {
+    key_type_combo_box_->addItem(QString::fromStdString(algo));
+  }
+  if (!GenKeyInfo::GetSupportedKeyAlgo().empty()) {
+    key_type_combo_box_->setCurrentIndex(0);
+  }
+
+  date_edit_ =
+      new QDateTimeEdit(QDateTime::currentDateTime().addYears(2), this);
+  date_edit_->setMinimumDateTime(QDateTime::currentDateTime());
+  date_edit_->setMaximumDateTime(max_date_time_);
+  date_edit_->setDisplayFormat("dd/MM/yyyy hh:mm:ss");
+  date_edit_->setCalendarPopup(true);
+  date_edit_->setEnabled(true);
+
+  expire_check_box_ = new QCheckBox(this);
+  expire_check_box_->setCheckState(Qt::Unchecked);
+
+  auto* vbox1 = new QGridLayout;
+
+  vbox1->addWidget(new QLabel(QString(_("Expiration Date")) + ": "), 2, 0);
+  vbox1->addWidget(new QLabel(QString(_("Never Expire")) + ": "), 2, 3);
+  vbox1->addWidget(new QLabel(QString(_("KeySize (in Bit)")) + ": "), 1, 0);
+  vbox1->addWidget(new QLabel(QString(_("Key Type")) + ": "), 0, 0);
+
+  vbox1->addWidget(date_edit_, 2, 1);
+  vbox1->addWidget(expire_check_box_, 2, 2);
+  vbox1->addWidget(key_size_spin_box_, 1, 1);
+  vbox1->addWidget(key_type_combo_box_, 0, 1);
+
+  auto basicInfoGroupBox = new QGroupBox();
+  basicInfoGroupBox->setLayout(vbox1);
+  basicInfoGroupBox->setTitle(_("Basic Information"));
+
+  return basicInfoGroupBox;
+}
+
+void SubkeyGenerateDialog::set_signal_slot() {
+  connect(button_box_, &QDialogButtonBox::accepted, this,
+          &SubkeyGenerateDialog::slot_key_gen_accept);
+  connect(button_box_, &QDialogButtonBox::rejected, this,
+          &SubkeyGenerateDialog::reject);
+
+  connect(expire_check_box_, &QCheckBox::stateChanged, this,
+          &SubkeyGenerateDialog::slot_expire_box_changed);
+
+  connect(key_usage_check_boxes_[0], &QCheckBox::stateChanged, this,
+          &SubkeyGenerateDialog::slot_encryption_box_changed);
+  connect(key_usage_check_boxes_[1], &QCheckBox::stateChanged, this,
+          &SubkeyGenerateDialog::slot_signing_box_changed);
+  connect(key_usage_check_boxes_[2], &QCheckBox::stateChanged, this,
+          &SubkeyGenerateDialog::slot_certification_box_changed);
+  connect(key_usage_check_boxes_[3], &QCheckBox::stateChanged, this,
+          &SubkeyGenerateDialog::slot_authentication_box_changed);
+
+  connect(key_type_combo_box_, qOverload<int>(&QComboBox::currentIndexChanged),
+          this, &SubkeyGenerateDialog::slot_activated_key_type);
+}
+
+void SubkeyGenerateDialog::slot_expire_box_changed() {
+  if (expire_check_box_->checkState()) {
+    date_edit_->setEnabled(false);
+  } else {
+    date_edit_->setEnabled(true);
+  }
+}
+
+void SubkeyGenerateDialog::refresh_widgets_state() {
+  qDebug() << "refresh_widgets_state called";
+
+  if (gen_key_info_->IsAllowEncryption())
+    key_usage_check_boxes_[0]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[0]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeEncryption())
+    key_usage_check_boxes_[0]->setDisabled(false);
+  else
+    key_usage_check_boxes_[0]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowSigning())
+    key_usage_check_boxes_[1]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[1]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeSigning())
+    key_usage_check_boxes_[1]->setDisabled(false);
+  else
+    key_usage_check_boxes_[1]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowCertification())
+    key_usage_check_boxes_[2]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[2]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeCertification())
+    key_usage_check_boxes_[2]->setDisabled(false);
+  else
+    key_usage_check_boxes_[2]->setDisabled(true);
+
+  if (gen_key_info_->IsAllowAuthentication())
+    key_usage_check_boxes_[3]->setCheckState(Qt::CheckState::Checked);
+  else
+    key_usage_check_boxes_[3]->setCheckState(Qt::CheckState::Unchecked);
+
+  if (gen_key_info_->IsAllowChangeAuthentication())
+    key_usage_check_boxes_[3]->setDisabled(false);
+  else
+    key_usage_check_boxes_[3]->setDisabled(true);
+
+  key_size_spin_box_->setRange(gen_key_info_->GetSuggestMinKeySize(),
+                               gen_key_info_->GetSuggestMaxKeySize());
+  key_size_spin_box_->setValue(gen_key_info_->GetKeyLength());
+  key_size_spin_box_->setSingleStep(gen_key_info_->GetSizeChangeStep());
+}
+
+void SubkeyGenerateDialog::slot_key_gen_accept() {
+  std::stringstream err_stream;
+
+  /**
+   * primary keys should have a reasonable expiration date (no more than 2 years
+   * in the future)
+   */
+  if (date_edit_->dateTime() > QDateTime::currentDateTime().addYears(2)) {
+    err_stream << "  " << _("Expiration time no more than 2 years.") << "  ";
+  }
+
+  auto err_string = err_stream.str();
+
+  if (err_string.empty()) {
+    gen_key_info_->SetKeyLength(key_size_spin_box_->value());
+
+    if (expire_check_box_->checkState()) {
+      gen_key_info_->SetNonExpired(true);
+    } else {
+      gen_key_info_->SetExpireTime(
+          boost::posix_time::from_time_t(date_edit_->dateTime().toTime_t()));
+    }
+
+    GpgError error;
+    auto thread = QThread::create([&]() {
+      LOG(INFO) << "Thread Started";
+      error = GpgKeyOpera::GetInstance().GenerateSubkey(key_, gen_key_info_);
+    });
+    thread->start();
+
+    auto* dialog = new WaitingDialog(_("Generating"), this);
+    dialog->show();
+
+    while (thread->isRunning()) {
+      QCoreApplication::processEvents();
+    }
+    dialog->close();
+
+    if (check_gpg_error_2_err_code(error) == GPG_ERR_NO_ERROR) {
+      auto* msg_box = new QMessageBox((QWidget*)this->parent());
+      msg_box->setAttribute(Qt::WA_DeleteOnClose);
+      msg_box->setStandardButtons(QMessageBox::Ok);
+      msg_box->setWindowTitle(_("Success"));
+      msg_box->setText(_("The new subkey has been generated."));
+      msg_box->setModal(true);
+      msg_box->open();
+
+      emit SignalSubKeyGenerated();
+      this->close();
+    } else
+      QMessageBox::critical(this, _("Failure"), _("Failed to generate key."));
+
+  } else {
+    /**
+     * create error message
+     */
+    error_label_->setAutoFillBackground(true);
+    QPalette error = error_label_->palette();
+    error.setColor(QPalette::Window, "#ff8080");
+    error_label_->setPalette(error);
+    error_label_->setText(err_string.c_str());
+
+    this->show();
+  }
+}
+
+void SubkeyGenerateDialog::slot_encryption_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowEncryption(false);
+  } else {
+    gen_key_info_->SetAllowEncryption(true);
+  }
+}
+
+void SubkeyGenerateDialog::slot_signing_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowSigning(false);
+  } else {
+    gen_key_info_->SetAllowSigning(true);
+  }
+}
+
+void SubkeyGenerateDialog::slot_certification_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowCertification(false);
+  } else {
+    gen_key_info_->SetAllowCertification(true);
+  }
+}
+
+void SubkeyGenerateDialog::slot_authentication_box_changed(int state) {
+  if (state == 0) {
+    gen_key_info_->SetAllowAuthentication(false);
+  } else {
+    gen_key_info_->SetAllowAuthentication(true);
+  }
+}
+
+void SubkeyGenerateDialog::slot_activated_key_type(int index) {
+  qDebug() << "key type index changed " << index;
+  gen_key_info_->SetAlgo(
+      this->key_type_combo_box_->itemText(index).toStdString());
+  refresh_widgets_state();
+}
+
+}  // namespace GpgFrontend::UI
diff --git a/src/ui/dialog/key_generate/SubkeyGenerateDialog.h b/src/ui/dialog/key_generate/SubkeyGenerateDialog.h
new file mode 100644
index 00000000..1e6608b2
--- /dev/null
+++ b/src/ui/dialog/key_generate/SubkeyGenerateDialog.h
@@ -0,0 +1,152 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * This file is part of GpgFrontend.
+ *
+ * GpgFrontend is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GpgFrontend is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The initial version of the source code is inherited from
+ * the gpg4usb project, which is under GPL-3.0-or-later.
+ *
+ * The source code version of this software was modified and released
+ * by Saturneric<[email protected]><[email protected]> starting on May 12, 2021.
+ *
+ */
+
+#ifndef GPGFRONTEND_SUBKEYGENERATEDIALOG_H
+#define GPGFRONTEND_SUBKEYGENERATEDIALOG_H
+
+#include "core/GpgContext.h"
+#include "core/GpgGenKeyInfo.h"
+#include "ui/GpgFrontendUI.h"
+#include "ui/dialog/GeneralDialog.h"
+
+namespace GpgFrontend::UI {
+/**
+ * @brief
+ *
+ */
+class SubkeyGenerateDialog : public GeneralDialog {
+  Q_OBJECT
+
+ public:
+  /**
+   * @brief Construct a new Subkey Generate Dialog object
+   *
+   * @param key_id
+   * @param parent
+   */
+  explicit SubkeyGenerateDialog(const KeyId& key_id, QWidget* parent);
+
+ signals:
+  /**
+   * @brief
+   *
+   */
+  void SignalSubKeyGenerated();
+
+ private:
+  GpgKey key_;  ///<
+
+  std::unique_ptr<GenKeyInfo> gen_key_info_ =
+      std::make_unique<GenKeyInfo>(true);  ///<
+
+  QGroupBox* key_usage_group_box_{};
+  QDialogButtonBox* button_box_;     ///< Box for standard buttons
+  QLabel* error_label_{};            ///< Label containing error message
+  QSpinBox* key_size_spin_box_{};    ///< Spinbox for the keys size (in bit)
+  QComboBox* key_type_combo_box_{};  ///<  Combobox for Key tpe
+  QDateTimeEdit* date_edit_{};       ///< Date edit for expiration date
+  QCheckBox* expire_check_box_{};    ///< Checkbox, if key should expire
+
+  std::vector<QCheckBox*> key_usage_check_boxes_;  ///< ENCR, SIGN, CERT, AUTH
+  QDateTime max_date_time_;                        ///<
+
+  /**
+   * @brief Create a key usage group box object
+   *
+   * @return QGroupBox*
+   */
+  QGroupBox* create_key_usage_group_box();
+
+  /**
+   * @brief Create a basic info group box object
+   *
+   * @return QGroupBox*
+   */
+  QGroupBox* create_basic_info_group_box();
+  /**
+   * @brief Set the signal slot object
+   *
+   */
+  void set_signal_slot();
+
+  /**
+   * @details Refresh widgets state by GenKeyInfo
+   */
+  void refresh_widgets_state();
+
+ private slots:
+
+  /**
+   * @details when expire box was checked/unchecked, enable/disable the
+   * expiration date box
+   */
+  void slot_expire_box_changed();
+
+  /**
+   * @details check all line edits for false entries. Show error, when there is
+   * one, otherwise generate the key
+   */
+  void slot_key_gen_accept();
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_encryption_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_signing_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_certification_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param state
+   */
+  void slot_authentication_box_changed(int state);
+
+  /**
+   * @brief
+   *
+   * @param index
+   */
+  void slot_activated_key_type(int index);
+};
+
+}  // namespace GpgFrontend::UI
+
+#endif  // GPGFRONTEND_SUBKEYGENERATEDIALOG_H