Use QByteArray to store the master key

Fixes #1

qml/pages/MainPage.qml

@@ -119,7 +119,7 @@ Page {
 
     onStatusChanged: {
         if (status === PageStatus.Activating) {
-            var isReady = manager.getName() !== "" && manager.getKey() !== "";
+            var isReady = manager.getName() !== "";
             site.enabled = isReady;
 
             if (!isReady) {

src/mpwmanager.cpp

@@ -40,11 +40,6 @@ MPWManager::~MPWManager()
 {
 }
 
-QString MPWManager::getKey() const
-{
-    return m_key;
-}
-
 QString MPWManager::getName() const
 {
     return m_name;
@@ -54,8 +49,14 @@ void MPWManager::setUserData(const QString &name, const QString &password)
 {
     m_name = name;
 
-    m_key = QString::fromLatin1((const char*) mpw_masterKeyForUser(name.toLatin1().data(),
-                                   password.toLatin1().data(), MPAlgorithmVersionCurrent));
+    const uint8_t* k = mpw_masterKeyForUser(name.toUtf8().data(), password.toUtf8().data(),
+                                            MPAlgorithmVersionCurrent);
+
+    if (k) {
+        m_key = QByteArray::fromRawData((const char*) k, MP_dkLen);
+    } else {
+        qCritical() << "Error during master key generation";
+    }
 }
 
 QString MPWManager::getPassword(const QString &site, PasswordType type, const int counter) const
@@ -73,7 +74,12 @@ QString MPWManager::getPassword(const QString &site, PasswordType type, const in
         default: qCritical() << "Unrecognized password type" << type;
     }
 
-    return QString::fromLatin1(mpw_passwordForSite((const unsigned char*) m_key.toLatin1().data(),
-                             site.toLatin1().data(), t, counter, MPSiteVariantPassword, NULL,
-                             MPAlgorithmVersionCurrent));
+    const char* p = mpw_passwordForSite((const unsigned char*) m_key.data(), site.toUtf8().data(),
+                                        t, counter, MPSiteVariantPassword, NULL, MPAlgorithmVersionCurrent);
+
+    if (p) {
+        return QString::fromUtf8(p);
+    } else {
+        return QString();
+    }
 }

src/mpwmanager.h

@@ -39,13 +39,12 @@ public:
     explicit MPWManager(QObject *parent = 0);
     virtual ~MPWManager();
 
-    Q_INVOKABLE QString getKey() const;
     Q_INVOKABLE QString getName() const;
     Q_INVOKABLE void setUserData(const QString &name, const QString &password);
     Q_INVOKABLE QString getPassword(const QString &site, PasswordType type, const int counter) const;
 
 private:
-    QString m_key;
+    QByteArray m_key;
     QString m_name;
 };
 

translations/harbour-mpw.ts

@@ -39,7 +39,7 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <location filename="../qml/pages/MainPage.qml" line="128"/>
+        <location filename="../qml/pages/MainPage.qml" line="126"/>
         <source>Please fill your name and master key in the Settings page!</source>
         <translation type="unfinished"></translation>
     </message>