Merge pull request #49 from saturneric/develop-2.0.5

v2.0.5

1 files changed, 120 insertions, 0 deletions

diff --git a/src/core/function/KeyPackageOperator.cpp b/src/core/function/KeyPackageOperator.cpp
new file mode 100644
index 00000000..67fa3fac
--- /dev/null
+++ b/src/core/function/KeyPackageOperator.cpp
@@ -0,0 +1,120 @@
+/**
+ * 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 "KeyPackageOperator.h"
+
+#include "FileOperator.h"
+#include "function/PassphraseGenerator.h"
+#include "function/gpg/GpgKeyGetter.h"
+#include "function/gpg/GpgKeyImportExporter.h"
+#include "qt-aes/qaesencryption.h"
+
+namespace GpgFrontend {
+
+bool KeyPackageOperator::GeneratePassphrase(
+    const std::filesystem::path& phrase_path, std::string& phrase) {
+  phrase = PassphraseGenerator::GetInstance().Generate(256);
+  LOG(INFO) << "Generated passphrase: " << phrase.size() << " bytes";
+  return FileOperator::WriteFileStd(phrase_path, phrase);
+}
+
+bool KeyPackageOperator::GenerateKeyPackage(
+    const std::filesystem::path& key_package_path,
+    const std::string& key_package_name, KeyIdArgsListPtr& key_ids,
+    std::string& phrase, bool secret) {
+  LOG(INFO) << "Generating key package: " << key_package_name;
+
+  ByteArrayPtr key_export_data = nullptr;
+  if (!GpgKeyImportExporter::GetInstance().ExportKeys(key_ids, key_export_data,
+                                                      secret)) {
+    LOG(ERROR) << "Failed to export keys";
+    return false;
+  }
+
+  auto key = QByteArray::fromStdString(phrase);
+  auto data = QString::fromStdString(*key_export_data).toLocal8Bit().toBase64();
+
+  auto hash_key = QCryptographicHash::hash(key, QCryptographicHash::Sha256);
+  QAESEncryption encryption(QAESEncryption::AES_256, QAESEncryption::ECB,
+                            QAESEncryption::Padding::ISO);
+  auto encoded = encryption.encode(data, hash_key);
+
+  LOG(INFO) << "Writing key package: " << key_package_name;
+  return FileOperator::WriteFileStd(key_package_path, encoded.toStdString());
+}
+
+bool KeyPackageOperator::ImportKeyPackage(
+    const std::filesystem::path& key_package_path,
+    const std::filesystem::path& phrase_path,
+    GpgFrontend::GpgImportInformation& import_info) {
+
+  LOG(INFO) << "Importing key package: " << key_package_path.u8string();
+
+  std::string encrypted_data;
+  FileOperator::ReadFileStd(key_package_path, encrypted_data);
+
+  if (encrypted_data.empty()) {
+    LOG(ERROR) << "Failed to read key package: " << key_package_path.u8string();
+    return false;
+  };
+
+  std::string passphrase;
+  FileOperator::ReadFileStd(phrase_path, passphrase);
+  LOG(INFO) << "Passphrase: " << passphrase.size() << " bytes";
+  if (passphrase.size() != 256) {
+    LOG(ERROR) << "Failed to read passphrase: " << phrase_path.u8string();
+    return false;
+  }
+
+  auto hash_key = QCryptographicHash::hash(
+      QByteArray::fromStdString(passphrase), QCryptographicHash::Sha256);
+  auto encoded = QByteArray::fromStdString(encrypted_data);
+
+  QAESEncryption encryption(QAESEncryption::AES_256, QAESEncryption::ECB,
+                            QAESEncryption::Padding::ISO);
+
+  auto decoded = encryption.removePadding(encryption.decode(encoded, hash_key));
+  auto key_data = QByteArray::fromBase64(decoded);
+
+  LOG(INFO)  << "key data" << key_data.size();
+  if (!key_data.startsWith(GpgConstants::PGP_PUBLIC_KEY_BEGIN) &&
+      !key_data.startsWith(GpgConstants::PGP_PRIVATE_KEY_BEGIN)) {
+    return false;
+  }
+
+  auto key_data_ptr = std::make_unique<ByteArray>(key_data.toStdString());
+  import_info =
+      GpgKeyImportExporter::GetInstance().ImportKey(std::move(key_data_ptr));
+  return true;
+}
+
+std::string KeyPackageOperator::GenerateKeyPackageName() {
+  return generate_key_package_name();
+}
+
+}  // namespace GpgFrontend