partial work towards core encryption functionality

bootstrap.sh

@@ -10,7 +10,7 @@ INSTALL_DIR=libs
 # just for convenience
 BASE_DIR=${SCRIPT_DIR}/${INSTALL_DIR}
 
-SODIUM_VER=0.7.0
+SODIUM_VER=1.0.0
 
 # directory names of cloned repositories
 SODIUM_DIR=libsodium-$SODIUM_VER

core.cpp

@@ -21,6 +21,7 @@
 #include "widget/widget.h"
 
 #include <tox/tox.h>
+#include <tox/toxencryptsave.h>
 
 #include <ctime>
 #include <functional>
@@ -110,6 +111,12 @@ Core::~Core()
         alcCloseDevice(alOutDev);
     if (alInDev)
         alcCaptureCloseDevice(alInDev);
+
+    if (pwhash)
+    {
+        delete[] pwhash;
+        pwhash = nullptr;
+    }
 }
 
 Core* Core::getInstance()
@@ -1405,3 +1412,43 @@ QList<CString> Core::splitMessage(const QString &message)
 
     return splittedMsgs;
 }
+
+void Core::setPassword(QString& password)
+{
+    if (!pwhash)
+        pwhash = new uint8_t[TOX_HASH_LENGTH];
+    CString str(password);
+    tox_hash(pwhash, str.data(), str.size());
+    password.clear();
+}
+
+bool Core::encryptFile(const QString& path)
+{
+    QFile file(path);
+    if (!file.exists()) {
+        qWarning() << "Core::encryptFile: file" << path << "DNE";
+        return false;
+    }
+    if (!file.open(QIODevice::ReadOnly)) {
+        qCritical() << "Core::encryptFile:" << path << " cannot be opened";
+        return false;
+    }
+    QByteArray data = file.readAll();
+    file.close();
+
+    uint8_t[] out = new uint8_t[data.size() + TOX_PASS_ENCRYPTION_EXTRA_LENGTH];
+    if (tox_pass_encrypt(data.data(), data.size(), pwhash, TOX_HASH_LENGTH, out)
+                        == -1)
+    {
+        qWarning() << "Core::encryptFile:" << "encryption of" << path << "failed";
+        return false;
+    }
+
+    if (!file.open(QIODevice::WriteOnly)) {
+        qCritical() << "Core::encryptFile:" << path << " cannot be opened for writing";
+        return false;
+    }
+    file.write(reinterpret_cast<char*>out, data.size() + TOX_PASS_ENCRYPTION_EXTRA_LENGTH);
+    file.close();
+    return true;
+}

core.h

@@ -94,6 +94,9 @@ public slots:
 
     void micMuteToggle(int callId);
 
+    void setPassword(QString& password);
+    bool encryptFile(const QString& path);
+
 signals:
     void connected();
     void disconnected();
@@ -231,6 +234,7 @@ private:
     int dhtServerId;
     static QList<ToxFile> fileSendQueue, fileRecvQueue;
     static ToxCall calls[];
+    uint8_t* pwhash = nullptr; // use the pw's hash as the "pw"
 
     static const QString CONFIG_FILE_NAME;
     static const int videobufsize;