+#ifdef HAVE_QCA2
+ _cipher = 0;
+
+ // Get the cipher key from CoreNetwork if present
+ CoreNetwork *coreNetwork = qobject_cast<CoreNetwork *>(network);
+ if (coreNetwork) {
+ QByteArray key = coreNetwork->readChannelCipherKey(channelname);
+ if (!key.isEmpty()) {
+ setEncrypted(cipher()->setKey(key));
+ }
+ }
+#endif
+}
+
+
+CoreIrcChannel::~CoreIrcChannel()
+{
+#ifdef HAVE_QCA2
+ // Store the cipher key in CoreNetwork, including empty keys if a cipher
+ // exists. There is no need to store the empty key if no cipher exists; no
+ // key was present when instantiating and no key was set during the
+ // channel's lifetime.
+ CoreNetwork *coreNetwork = qobject_cast<CoreNetwork *>(network());
+ if (coreNetwork && _cipher) {
+ coreNetwork->storeChannelCipherKey(name(), _cipher->key());
+ }
+
+ delete _cipher;
+#endif
+}
+
+
+#ifdef HAVE_QCA2
+Cipher *CoreIrcChannel::cipher() const
+{
+ if (!_cipher)
+ _cipher = new Cipher();
+
+ return _cipher;
+}
+
+
+void CoreIrcChannel::setEncrypted(bool e)
+{
+ IrcChannel::setEncrypted(e);
+
+ if (!Cipher::neededFeaturesAvailable())
+ return;
+
+ if (e) {
+ if (topic().isEmpty())
+ return;
+
+ QByteArray decrypted = cipher()->decryptTopic(topic().toLatin1());
+ setTopic(decodeString(decrypted));
+ }