Added tests for wiping

Author: bram

include/encryptionengine.h

@@ -60,6 +60,18 @@ class EncryptionEngine
     bool encryptDisk(const QString& diskPath, const QString& password, const QString& algorithm, const QString& kdf, int iterations, bool useHMAC, const QStringList& keyfilePaths = QStringList());
     bool decryptDisk(const QString& diskPath, const QString& password, const QString& algorithm, const QString& kdf, int iterations, bool useHMAC, const QStringList& keyfilePaths = QStringList());
 
+    // Disk wiping methods
+    bool secureWipeDisk(const QString& diskPath, int passes = 3, bool verifyWipe = true);
+    bool secureWipePartition(const QString& partitionPath, int passes = 3);
+    enum class WipePattern {
+        ZEROS,
+        ONES,
+        RANDOM,
+        DOD_SHORT, // DoD 5220.22-M short (3 passes)
+        DOD_FULL,  // DoD 5220.22-M full (7 passes)
+        GUTMANN    // Peter Gutmann's 35-pass method
+    };
+    
     // Hidden volume support - encrypt/decrypt specific section of disk
     bool encryptDiskSection(const QString& diskPath, const QString& password, const QString& algorithm, const QString& kdf, int iterations, bool useHMAC, const QStringList& keyfilePaths, qint64 startOffset, qint64 sectionSize);
     bool decryptDiskSection(const QString& diskPath, const QString& password, const QString& algorithm, const QString& kdf, int iterations, bool useHMAC, const QStringList& keyfilePaths, qint64 startOffset, qint64 sectionSize);
@@ -150,6 +162,10 @@ class EncryptionEngine
     void updateEntropyHealthMetrics(const EntropyTestResult& result);
     void hashWhitenData(const QByteArray& input, QByteArray& output);
 
+    // Disk wiping helpers
+    bool writeWipePattern(QFile& diskFile, WipePattern pattern, qint64 size, int passNumber, int totalPasses);
+    bool verifyWipePattern(QFile& diskFile, WipePattern pattern, qint64 size);
+    
     // Entropy health status metrics
     mutable QMutex m_entropyMetricsMutex;
     QString m_entropyHealthStatus = "Unknown";

include/mainwindow.h

@@ -61,6 +61,8 @@ private slots:
     void on_diskBrowseButton_clicked();
     void on_diskKeyfileBrowseButton_clicked();
     void on_refreshDisksButton_clicked();
+    void on_diskSecureWipeCheckBox_toggled(bool checked);
+    void on_wipePatternComboBox_currentIndexChanged(int index);
     void updateProgress(int value);
     void handleFinished(bool success, const QString &errorMessage);
     void showEstimatedTime(double seconds);