diff --git a/core/handlers/rosterhandler.cpp b/core/handlers/rosterhandler.cpp
index ceaab2d..2e59971 100644
--- a/core/handlers/rosterhandler.cpp
+++ b/core/handlers/rosterhandler.cpp
@@ -39,6 +39,10 @@ void Core::RosterHandler::initialize() {
     connect(acc->bm, &QXmppBookmarkManager::bookmarksReceived, this, &RosterHandler::bookmarksReceived);
 
     connect(acc, &Account::pepSupportChanged, this, &RosterHandler::onPepSupportedChanged);
+
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+    connect(acc->th, &TrustHandler::trustLevelsChanged, this, &RosterHandler::onTrustChanged);
+#endif
 }
 
 Core::RosterHandler::~RosterHandler() {
@@ -214,10 +218,13 @@ void Core::RosterHandler::onContactGroupAdded(const QString& group) {
     if (contact->groupsCount() == 1) {
         // not sure i need to handle it here, the situation with grouped and ungrouped contacts handled on the client anyway
     }
-    
+
     QMap<QString, QVariant> cData({
         {"name", contact->getName()},
         {"state", QVariant::fromValue(contact->getSubscriptionState())},
+#if (QXMPP_VERSION) >= QT_VERSION_CHECK(1, 5, 0)
+        {"trust", QVariant::fromValue(acc->th->getSummary(contact->jid))},
+#endif
         {"encryption", contact->isEncryptionEnabled()}
     });
     addToGroup(contact->jid, group);
@@ -229,7 +236,7 @@ void Core::RosterHandler::onContactGroupRemoved(const QString& group) {
     if (contact->groupsCount() == 0) {
         // not sure i need to handle it here, the situation with grouped and ungrouped contacts handled on the client anyway
     }
-    
+
     emit acc->removeContact(contact->jid, group);
     removeFromGroup(contact->jid, group);
 }
@@ -246,12 +253,14 @@ void Core::RosterHandler::onContactEncryptionChanged(bool value) {
 
 void Core::RosterHandler::onContactSubscriptionStateChanged(Shared::SubscriptionState cstate) {
     Contact* contact = static_cast<Contact*>(sender());
-    QMap<QString, QVariant> cData({
-        {"state", QVariant::fromValue(cstate)},
-    });
-    emit acc->changeContact(contact->jid, cData);
+    emit acc->changeContact(contact->jid, {{"state", QVariant::fromValue(cstate)}});
 }
 
+void Core::RosterHandler::onTrustChanged(const QString& jid, const Shared::TrustSummary& trust) {
+    emit acc->changeContact(jid, {{"trust", QVariant::fromValue(trust)}});
+}
+
+
 void Core::RosterHandler::addToGroup(const QString& jid, const QString& group) {
     std::map<QString, std::set<QString>>::iterator gItr = groups.find(group);
     if (gItr == groups.end()) {
@@ -296,18 +305,18 @@ Core::RosterItem * Core::RosterHandler::getRosterItem(const QString& jid) {
 Core::Conference * Core::RosterHandler::getConference(const QString& jid) {
     Conference* item = 0;
     std::map<QString, Conference*>::const_iterator coitr = conferences.find(jid.toLower());
-    if (coitr != conferences.end()) {
+    if (coitr != conferences.end())
         item = coitr->second;
-    }
+
     return item;
 }
 
 Core::Contact * Core::RosterHandler::getContact(const QString& jid) {
     Contact* item = 0;
     std::map<QString, Contact*>::const_iterator citr = contacts.find(jid.toLower());
-    if (citr != contacts.end()) {
+    if (citr != contacts.end())
         item = citr->second;
-    }
+
     return item;
 }
 
@@ -527,7 +536,6 @@ void Core::RosterHandler::handleOffline() {
     }
 }
 
-
 void Core::RosterHandler::onPepSupportedChanged(Shared::Support support) {
     if (support == Shared::Support::supported) {
         for (const std::pair<const QString, Contact*>& pair : contacts) {
diff --git a/core/handlers/rosterhandler.h b/core/handlers/rosterhandler.h
index 63f291c..61f3d7a 100644
--- a/core/handlers/rosterhandler.h
+++ b/core/handlers/rosterhandler.h
@@ -34,6 +34,8 @@
 
 #include <shared/enums.h>
 #include <shared/message.h>
+#include <shared/trustsummary.h>
+
 #include <core/contact.h>
 #include <core/conference.h>
 #include <core/delayManager/manager.h>
@@ -75,6 +77,7 @@ private slots:
     void onRosterItemAdded(const QString& bareJid);
     void onRosterItemChanged(const QString& bareJid);
     void onRosterItemRemoved(const QString& bareJid);
+    void onTrustChanged(const QString& jid, const Shared::TrustSummary& trust);
     
     void onMucRoomAdded(QXmppMucRoom* room);
     void onMucJoinedChanged(bool joined);
diff --git a/core/handlers/trusthandler.cpp b/core/handlers/trusthandler.cpp
index 35e1bc6..c866d6f 100644
--- a/core/handlers/trusthandler.cpp
+++ b/core/handlers/trusthandler.cpp
@@ -79,7 +79,25 @@ Core::TrustHandler::KeyCache * Core::TrustHandler::createNewCache(const QString&
 QXmppTask<void> Core::TrustHandler::resetAll(const QString& encryption) {
     securityPolicies->removeRecord(encryption);
     ownKeys->removeRecord(encryption);
-    getCache(encryption)->drop();
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return Core::makeReadyTask();
+
+    KeyCache* cache = itr->second;
+    std::map<QString, Keys> keys = cache->readAll();
+    cache->drop();
+
+    for (const std::pair<const QString, Keys>& pair : keys) {
+        bool empty = true;
+        for (const std::pair<const QByteArray, Shared::TrustLevel>& trust : pair.second) {
+            if (trust.second != Shared::TrustLevel::undecided) {
+                empty = false;
+                break;
+            }
+        }
+        if (!empty)
+            emit trustLevelsChanged(pair.first, getSummary(pair.first));
+    }
 
     return Core::makeReadyTask();
 }
@@ -109,6 +127,7 @@ QXmppTask<QHash<QString, QMultiHash<QString, QByteArray>>> Core::TrustHandler::s
     QHash<QString, QMultiHash<QString, QByteArray>> modifiedKeys;
     Shared::TrustLevel oldLevel = convert(oldTrustLevel);
     Shared::TrustLevel newLevel = convert(newTrustLevel);
+    std::set<QString> modifiedJids;
     KeyCache* cache = getCache(encryption);
     for (const QString& keyOwnerJid : keyOwnerJids) {
         Keys map = cache->getRecord(keyOwnerJid);
@@ -118,13 +137,16 @@ QXmppTask<QHash<QString, QMultiHash<QString, QByteArray>>> Core::TrustHandler::s
             if (current == oldLevel) {
                 current = newLevel;
                 modifiedKeys[encryption].insert(keyOwnerJid, pair.first);
+                modifiedJids.insert(keyOwnerJid);
                 ++count;
             }
         }
-        if (count > 0) {
+        if (count > 0)
             cache->changeRecord(keyOwnerJid, map);
-        }
     }
+    for (const QString& jid : modifiedJids)
+        emit trustLevelsChanged(jid, getSummary(jid));
+
     return Core::makeReadyTask(std::move(modifiedKeys));
 }
 
@@ -135,6 +157,7 @@ QXmppTask<QHash<QString, QMultiHash<QString, QByteArray>>> Core::TrustHandler::s
 {
     QHash<QString, QMultiHash<QString, QByteArray>> modifiedKeys;
     Shared::TrustLevel level = convert(trustLevel);
+    std::set<QString> modifiedJids;
     KeyCache* cache = getCache(encryption);
 
     for (MultySB::const_iterator itr = keyIds.begin(), end = keyIds.end(); itr != end; ++itr) {
@@ -150,14 +173,20 @@ QXmppTask<QHash<QString, QMultiHash<QString, QByteArray>>> Core::TrustHandler::s
             }
             if (changed) {
                 modifiedKeys[encryption].insert(keyOwnerJid, keyId);
+                modifiedJids.insert(keyOwnerJid);
                 cache->changeRecord(keyOwnerJid, map);
             }
         } catch (const DataBase::NotFound& e) {
             Keys map({{keyId, level}});
             modifiedKeys[encryption].insert(keyOwnerJid, keyId);
+            modifiedJids.insert(keyOwnerJid);
             cache->addRecord(keyOwnerJid, map);
         }
     }
+
+    for (const QString& jid : modifiedJids)
+        emit trustLevelsChanged(jid, getSummary(jid));
+
     return Core::makeReadyTask(std::move(modifiedKeys));
 }
 
@@ -220,12 +249,41 @@ QXmppTask<QHash<QXmpp::TrustLevel, QMultiHash<QString, QByteArray>>> Core::Trust
 }
 
 QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption) {
-    getCache(encryption)->drop();
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return Core::makeReadyTask();
+
+    KeyCache* cache = itr->second;
+    std::map<QString, Keys> keys = cache->readAll();
+    cache->drop();
+
+    for (const std::pair<const QString, Keys>& pair : keys) {
+        bool empty = true;
+        for (const std::pair<const QByteArray, Shared::TrustLevel>& trust : pair.second) {
+            if (trust.second != Shared::TrustLevel::undecided) {
+                empty = false;
+                break;
+            }
+        }
+        if (!empty)
+            emit trustLevelsChanged(pair.first, getSummary(pair.first));
+    }
+
     return Core::makeReadyTask();
 }
 
 QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption, const QString& keyOwnerJid) {
-    getCache(encryption)->removeRecord(keyOwnerJid);
+    std::map<QString, KeyCache*>::const_iterator itr = keysByProtocol.find(encryption);
+    if (itr == keysByProtocol.end())
+        return Core::makeReadyTask();
+
+    KeyCache* cache = itr->second;
+    try {
+        cache->removeRecord(keyOwnerJid);
+        emit trustLevelsChanged(keyOwnerJid, getSummary(keyOwnerJid));      //TODO there is a probability of notification without the actial change
+    } catch (const DataBase::NotFound& e) {}                                //if the movin entry was empty or if it consisted of Undecided keys
+
+
     return Core::makeReadyTask();
 }
 
@@ -236,14 +294,15 @@ QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption, const
 
     KeyCache* cache = getCache(encryption);
     std::map<QString, Keys> data = cache->readAll();
-    bool changed = false;
+    std::set<QString> modifiedJids;
+
     for (std::map<QString, Keys>::iterator cItr = data.begin(), cEnd = data.end(); cItr != cEnd; /*no increment*/) {
         Keys& byOwner = cItr->second;
         for (Keys::const_iterator itr = byOwner.begin(), end = byOwner.end(); itr != end; /*no increment*/) {
             const QByteArray& keyId = itr->first;
             if (set.erase(keyId)) {
                 byOwner.erase(itr++);
-                changed = true;
+                modifiedJids.insert(cItr->first);
             } else
                 ++itr;
         }
@@ -252,8 +311,12 @@ QXmppTask<void> Core::TrustHandler::removeKeys(const QString& encryption, const
         else
             ++cItr;
     }
-    if (changed)
+    if (modifiedJids.size() > 0) {
         cache->replaceAll(data);
+    }
+
+    for (const QString& jid : modifiedJids)
+        emit trustLevelsChanged(jid, getSummary(jid));
 
     return Core::makeReadyTask();
 }
@@ -278,11 +341,12 @@ QXmppTask<void> Core::TrustHandler::addKeys(
             result.first->second = level;
     }
 
-    if (had) {
+    if (had)
         cache->changeRecord(keyOwnerJid, data);
-    } else {
+    else
         cache->addRecord(keyOwnerJid, data);
-    }
+
+    emit trustLevelsChanged(keyOwnerJid, getSummary(keyOwnerJid));
 
     return Core::makeReadyTask();
 }
diff --git a/core/handlers/trusthandler.h b/core/handlers/trusthandler.h
index d21e0c3..98d7f1e 100644
--- a/core/handlers/trusthandler.h
+++ b/core/handlers/trusthandler.h
@@ -32,6 +32,10 @@ public:
     TrustHandler(Account* account);
     ~TrustHandler();
 
+signals:
+    void trustLevelsChanged(const QString& jid, const Shared::TrustSummary& summary) const;
+
+public:
     typedef QMultiHash<QString, QByteArray> MultySB;
     typedef QHash<QString, MultySB> HashSM;
     typedef const QList<QString>& CLSR;
diff --git a/shared/trustsummary.cpp b/shared/trustsummary.cpp
index 33a3873..eae98bf 100644
--- a/shared/trustsummary.cpp
+++ b/shared/trustsummary.cpp
@@ -138,7 +138,7 @@ bool Shared::TrustSummary::hasTrustedKeys(Shared::EncryptionProtocol protocol) c
 }
 
 bool Shared::TrustSummary::hasUntrustedKeys(Shared::EncryptionProtocol protocol) const {
-        Data::const_iterator itr = data.find(protocol);
+    Data::const_iterator itr = data.find(protocol);
     if (itr == data.end())
         return false;
 
@@ -149,3 +149,11 @@ bool Shared::TrustSummary::hasUntrustedKeys(Shared::EncryptionProtocol protocol)
 
     return false;
 }
+
+bool Shared::TrustSummary::operator==(const Shared::TrustSummary& other) {
+    return data == other.data;
+}
+
+bool Shared::TrustSummary::operator!=(const Shared::TrustSummary& other) {
+    return data != other.data;
+}
diff --git a/shared/trustsummary.h b/shared/trustsummary.h
index 7c79978..e663a9d 100644
--- a/shared/trustsummary.h
+++ b/shared/trustsummary.h
@@ -30,6 +30,9 @@ class TrustSummary {
 public:
     TrustSummary();
 
+    bool operator == (const TrustSummary& other);
+    bool operator != (const TrustSummary& other);
+
     void set(EncryptionProtocol protocol, TrustLevel level, uint8_t amount);
     uint8_t increment(EncryptionProtocol protocol, TrustLevel level);
     uint8_t decrement(EncryptionProtocol protocol, TrustLevel level);
diff --git a/ui/models/contact.cpp b/ui/models/contact.cpp
index b963421..8d6def9 100644
--- a/ui/models/contact.cpp
+++ b/ui/models/contact.cpp
@@ -206,10 +206,10 @@ Shared::TrustSummary Models::Contact::getTrust() const {
 }
 
 void Models::Contact::setTrust(const Shared::TrustSummary& p_trust) {
-    //if (trust != p_trust) {
+    if (trust != p_trust) {
         trust = p_trust;
         changed(8);
-    //}
+    }
 }
 
 
@@ -245,7 +245,11 @@ QString Models::Contact::getDisplayedName() const {
 }
 
 void Models::Contact::handleRecconnect() {
-    if (getMessagesCount() > 0) {
+    if (getMessagesCount() > 0)
         feed->requestLatestMessages();
-    }
 }
+
+bool Models::Contact::hasKeys(Shared::EncryptionProtocol protocol) const {
+    return trust.hasKeys(protocol);
+}
+
diff --git a/ui/models/contact.h b/ui/models/contact.h
index 36802cb..e7d767d 100644
--- a/ui/models/contact.h
+++ b/ui/models/contact.h
@@ -59,6 +59,7 @@ public:
     QString getStatus() const;
     QString getDisplayedName() const override;
     Shared::TrustSummary getTrust() const;
+    bool hasKeys(Shared::EncryptionProtocol protocol) const;
     
     void handleRecconnect();        //this is a special method Models::Roster calls when reconnect happens
     
diff --git a/ui/widgets/chat.cpp b/ui/widgets/chat.cpp
index 052d83d..607fab4 100644
--- a/ui/widgets/chat.cpp
+++ b/ui/widgets/chat.cpp
@@ -17,6 +17,7 @@
  */
 
 #include "chat.h"
+#include "ui_conversation.h"
 
 Chat::Chat(Models::Account* acc, Models::Contact* p_contact, QWidget* parent):
     Conversation(false, acc, p_contact, p_contact->getJid(), "", parent),
@@ -28,14 +29,14 @@ Chat::Chat(Models::Account* acc, Models::Contact* p_contact, QWidget* parent):
     setAvatar(p_contact->getAvatarPath());
     
     connect(contact, &Models::Contact::childChanged, this, &Chat::onContactChanged);
+    if (p_contact->hasKeys(Shared::EncryptionProtocol::omemo2))
+        m_ui->encryptionButton->setVisible(true);
 }
 
 Chat::~Chat()
-{
-}
+{}
 
-void Chat::onContactChanged(Models::Item* item, int row, int col)
-{
+void Chat::onContactChanged(Models::Item* item, int row, int col) {
     if (item == contact) {
         switch (col) {
             case 0:
@@ -50,19 +51,20 @@ void Chat::onContactChanged(Models::Item* item, int row, int col)
             case 7:
                 setAvatar(contact->getAvatarPath());
                 break;
+            case 8:
+                m_ui->encryptionButton->setVisible(contact->hasKeys(Shared::EncryptionProtocol::omemo2));
+                break;
         }
     }
 }
 
-void Chat::updateState()
-{
+void Chat::updateState() {
     Shared::Availability av = contact->getAvailability();
     statusIcon->setPixmap(Shared::availabilityIcon(av, true).pixmap(40));
     statusIcon->setToolTip(Shared::Global::getName(av));
 }
 
-Shared::Message Chat::createMessage() const
-{
+Shared::Message Chat::createMessage() const {
     Shared::Message msg = Conversation::createMessage();
     msg.setType(Shared::Message::chat);
     msg.setFrom(account->getFullJid());
@@ -71,14 +73,12 @@ Shared::Message Chat::createMessage() const
     return msg;
 }
 
-void Chat::onMessage(const Shared::Message& data)
-{
+void Chat::onMessage(const Shared::Message& data){
     Conversation::onMessage(data);
     
     if (!data.getOutgoing()) {
         const QString& res = data.getPenPalResource();
-        if (res.size() > 0) {
+        if (res.size() > 0)
             setPalResource(res);
-        }
     }
 }