Added post quantum ZRTP stats + show ZRTP Post Quantum instead of ZRTP in call encryption settings if available + updated ZRTP SAS dialog with new layout

CHANGELOG.md

@@ -13,6 +13,7 @@ Group changes to describe their impact on the project, as follows:
 ## [4.7.0] - Unreleased
 
 ### Added
+- Post Quantum encryption when using ZRTP
 - Conference creation with scheduling, video, different layouts, showing who is speaking and who is muted, etc...
 - Group calls directly from group chat rooms
 - Chat rooms can be individually muted (no notification when receiving a chat message)

app/src/main/assets/linphonerc_factory

@@ -15,6 +15,7 @@ auto_net_state_mon=1
 auto_answer_replacing_calls=1
 ping_with_options=0
 use_cpim=1
+zrtp_key_agreements_suites=MS_ZRTP_KEY_AGREEMENT_K255_KYB512
 
 [sound]
 #remove this property for any application that is not Linphone public version itself

app/src/main/java/org/linphone/activities/main/settings/viewmodels/CallSettingsViewModel.kt

@@ -290,7 +290,11 @@ class CallSettingsViewModel : GenericSettingsViewModel() {
             encryptionValues.add(MediaEncryption.SRTP.toInt())
         }
         if (core.mediaEncryptionSupported(MediaEncryption.ZRTP)) {
-            labels.add(prefs.getString(R.string.call_settings_media_encryption_zrtp))
+            if (core.postQuantumAvailable) {
+                labels.add(prefs.getString(R.string.call_settings_media_encryption_zrtp_post_quantum))
+            } else {
+                labels.add(prefs.getString(R.string.call_settings_media_encryption_zrtp))
+            }
             encryptionValues.add(MediaEncryption.ZRTP.toInt())
         }
         if (core.mediaEncryptionSupported(MediaEncryption.DTLS)) {

app/src/main/java/org/linphone/activities/voip/data/CallStatisticsData.kt

@@ -28,6 +28,8 @@ class CallStatisticsData(val call: Call) : GenericContactData(call.remoteAddress
 
     val videoStats = MutableLiveData<ArrayList<StatItemData>>()
 
+    val mediaEncryptionStats = MutableLiveData<ArrayList<StatItemData>>()
+
     val isVideoEnabled = MutableLiveData<Boolean>()
 
     private var enabled = false
@@ -48,11 +50,16 @@ class CallStatisticsData(val call: Call) : GenericContactData(call.remoteAddress
 
         val videoEnabled = call.currentParams.isVideoEnabled
         isVideoEnabled.value = videoEnabled
+
+        updateMediaEncryptionStats()
     }
 
     fun enable() {
         enabled = true
         call.addListener(listener)
+
+        // Needed for media encryption stats
+        updateMediaEncryptionStats()
     }
 
     fun disable() {
@@ -65,8 +72,13 @@ class CallStatisticsData(val call: Call) : GenericContactData(call.remoteAddress
         super.destroy()
     }
 
+    private fun updateMediaEncryptionStats() {
+        initCallStats()
+    }
+
     private fun initCallStats() {
         val audioList = arrayListOf<StatItemData>()
+
         audioList.add(StatItemData(StatType.CAPTURE))
         audioList.add(StatItemData(StatType.PLAYBACK))
         audioList.add(StatItemData(StatType.PAYLOAD))
@@ -79,9 +91,26 @@ class CallStatisticsData(val call: Call) : GenericContactData(call.remoteAddress
         audioList.add(StatItemData(StatType.SENDER_LOSS))
         audioList.add(StatItemData(StatType.RECEIVER_LOSS))
         audioList.add(StatItemData(StatType.JITTER))
+
         audioStats.value = audioList
 
+        val mediaEncryptionList = arrayListOf<StatItemData>()
+
+        mediaEncryptionList.add(StatItemData(StatType.MEDIA_ENCRYPTION))
+
+        // ZRTP stats are only available when authentication token isn't null !
+        if (call.currentParams.mediaEncryption == MediaEncryption.ZRTP && call.authenticationToken != null) {
+            mediaEncryptionList.add(StatItemData(StatType.ZRTP_CIPHER_ALGO))
+            mediaEncryptionList.add(StatItemData(StatType.ZRTP_KEY_AGREEMENT_ALGO))
+            mediaEncryptionList.add(StatItemData(StatType.ZRTP_HASH_ALGO))
+            mediaEncryptionList.add(StatItemData(StatType.ZRTP_AUTH_TAG_ALGO))
+            mediaEncryptionList.add(StatItemData(StatType.ZRTP_AUTH_SAS_ALGO))
+        }
+
+        mediaEncryptionStats.value = mediaEncryptionList
+
         val videoList = arrayListOf<StatItemData>()
+
         videoList.add(StatItemData(StatType.CAPTURE))
         videoList.add(StatItemData(StatType.PLAYBACK))
         videoList.add(StatItemData(StatType.PAYLOAD))
@@ -98,6 +127,7 @@ class CallStatisticsData(val call: Call) : GenericContactData(call.remoteAddress
         videoList.add(StatItemData(StatType.RECEIVED_RESOLUTION))
         videoList.add(StatItemData(StatType.SENT_FPS))
         videoList.add(StatItemData(StatType.RECEIVED_FPS))
+
         videoStats.value = videoList
     }
 
@@ -106,6 +136,9 @@ class CallStatisticsData(val call: Call) : GenericContactData(call.remoteAddress
             for (stat in audioStats.value.orEmpty()) {
                 stat.update(call, stats)
             }
+            for (stat in mediaEncryptionStats.value.orEmpty()) {
+                stat.update(call, stats)
+            }
         } else if (stats.type == StreamType.Video) {
             for (stat in videoStats.value.orEmpty()) {
                 stat.update(call, stats)

app/src/main/java/org/linphone/activities/voip/data/StatItemData.kt

@@ -23,6 +23,7 @@ import androidx.lifecycle.MutableLiveData
 import java.text.DecimalFormat
 import org.linphone.R
 import org.linphone.core.*
+import org.linphone.utils.AppUtils
 
 enum class StatType(val nameResource: Int) {
     CAPTURE(R.string.call_stats_capture_filter),
@@ -41,7 +42,13 @@ enum class StatType(val nameResource: Int) {
     RECEIVED_RESOLUTION(R.string.call_stats_video_resolution_received),
     SENT_FPS(R.string.call_stats_video_fps_sent),
     RECEIVED_FPS(R.string.call_stats_video_fps_received),
-    ESTIMATED_AVAILABLE_DOWNLOAD_BW(R.string.call_stats_estimated_download)
+    ESTIMATED_AVAILABLE_DOWNLOAD_BW(R.string.call_stats_estimated_download),
+    MEDIA_ENCRYPTION(R.string.call_stats_media_encryption),
+    ZRTP_CIPHER_ALGO(R.string.call_stats_zrtp_cipher_algo),
+    ZRTP_KEY_AGREEMENT_ALGO(R.string.call_stats_zrtp_key_agreement_algo),
+    ZRTP_HASH_ALGO(R.string.call_stats_zrtp_hash_algo),
+    ZRTP_AUTH_TAG_ALGO(R.string.call_stats_zrtp_auth_tag_algo),
+    ZRTP_AUTH_SAS_ALGO(R.string.call_stats_zrtp_sas_algo)
 }
 
 class StatItemData(val type: StatType) {
@@ -75,6 +82,26 @@ class StatItemData(val type: StatType) {
             StatType.SENT_FPS -> "${call.currentParams.sentFramerate}"
             StatType.RECEIVED_FPS -> "${call.currentParams.receivedFramerate}"
             StatType.ESTIMATED_AVAILABLE_DOWNLOAD_BW -> "${stats.estimatedDownloadBandwidth} kbit/s"
+            StatType.MEDIA_ENCRYPTION -> {
+                when (call.currentParams.mediaEncryption) {
+                    MediaEncryption.ZRTP -> {
+                        if (stats.isZrtpKeyAgreementAlgoPostQuantum) {
+                            AppUtils.getString(R.string.call_settings_media_encryption_zrtp_post_quantum)
+                        } else {
+                            AppUtils.getString(R.string.call_settings_media_encryption_zrtp)
+                        }
+                    }
+                    MediaEncryption.DTLS -> AppUtils.getString(R.string.call_settings_media_encryption_dtls)
+                    MediaEncryption.SRTP -> AppUtils.getString(R.string.call_settings_media_encryption_srtp)
+                    MediaEncryption.None -> AppUtils.getString(R.string.call_settings_media_encryption_none)
+                    else -> "Unexpected!"
+                }
+            }
+            StatType.ZRTP_CIPHER_ALGO -> stats.zrtpCipherAlgo
+            StatType.ZRTP_KEY_AGREEMENT_ALGO -> stats.zrtpKeyAgreementAlgo
+            StatType.ZRTP_HASH_ALGO -> stats.zrtpHashAlgo
+            StatType.ZRTP_AUTH_TAG_ALGO -> stats.zrtpAuthTagAlgo
+            StatType.ZRTP_AUTH_SAS_ALGO -> stats.zrtpSasAlgo
         }
     }
 }

app/src/main/java/org/linphone/activities/voip/fragments/StatusFragment.kt

@@ -112,9 +112,13 @@ class StatusFragment : GenericFragment<VoipStatusFragmentBinding>() {
         viewModel.zrtpReadSas = toRead.uppercase(Locale.getDefault())
         viewModel.zrtpListenSas = toListen.uppercase(Locale.getDefault())
         viewModel.showIcon = true
-        viewModel.iconResource = R.drawable.security_2_indicator
+        viewModel.iconResource = if (call.audioStats?.isZrtpKeyAgreementAlgoPostQuantum == true) {
+            R.drawable.security_post_quantum
+        } else {
+            R.drawable.security_2_indicator
+        }
 
-        val dialog: Dialog = DialogUtils.getDialog(requireContext(), viewModel)
+        val dialog: Dialog = DialogUtils.getVoipDialog(requireContext(), viewModel)
 
         viewModel.showDeleteButton(
             {

app/src/main/res/layout/dialog.xml

@@ -43,62 +43,6 @@
             android:gravity="center"
             android:text="@{viewModel.message, default=Message}"/>
 
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:layout_margin="5dp"
-            android:orientation="vertical"
-            android:visibility="@{viewModel.showZrtp ? View.VISIBLE : View.GONE, default=gone}">
-
-            <LinearLayout
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_gravity="center"
-                android:gravity="center"
-                android:orientation="vertical">
-
-                <TextView
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="@string/dialog_zrtp_local_sas"
-                    android:gravity="center"
-                    android:textAppearance="@style/dialog_zrtp_white_font" />
-
-                <TextView
-                    android:text="@{viewModel.zrtpReadSas}"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_marginLeft="5dp"
-                    android:textAppearance="@style/dialog_zrtp_colored_font" />
-
-            </LinearLayout>
-
-            <LinearLayout
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="center"
-                android:gravity="center"
-                android:orientation="vertical">
-
-                <TextView
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:text="@string/dialog_zrtp_remote_sas"
-                    android:gravity="center"
-                    android:textAppearance="@style/dialog_zrtp_white_font" />
-
-                <TextView
-                    android:text="@{viewModel.zrtpListenSas}"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_marginLeft="5dp"
-                    android:textAppearance="@style/dialog_zrtp_colored_font" />
-
-            </LinearLayout>
-
-        </LinearLayout>
-
         <LinearLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"

app/src/main/res/layout/voip_call_stat_cell.xml

@@ -26,6 +26,7 @@
             style="@style/call_stats_font"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginLeft="5dp"
             android:maxLines="1"
             android:ellipsize="end"
             android:gravity="center" />

app/src/main/res/layout/voip_call_stats_cell.xml

@@ -16,6 +16,24 @@
         android:gravity="center"
         android:orientation="vertical">
 
+        <TextView
+            style="@style/call_stats_title_font"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center_vertical|center"
+            android:text="@string/call_settings_encryption_title"
+            tools:gravity="center" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:paddingLeft="5dp"
+            android:paddingRight="5dp"
+            android:paddingBottom="10dp"
+            app:entries="@{data.mediaEncryptionStats}"
+            app:layout="@{@layout/voip_call_stat_cell}" />
+
         <TextView
             style="@style/call_stats_title_font"
             android:layout_width="wrap_content"

app/src/main/res/layout/voip_dialog.xml

@@ -15,99 +15,208 @@
         android:clickable="true"
         android:focusable="true">
 
-        <View
-            android:id="@+id/background"
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_marginStart="10dp"
-            android:layout_marginEnd="10dp"
-            android:background="@drawable/shape_dialog_background"
-            app:layout_constraintTop_toTopOf="@id/dialog_message"
-            app:layout_constraintBottom_toBottomOf="@id/bottom_barrier"/>
-
-        <TextView
-            android:id="@+id/cancel_button"
-            style="@style/big_orange_button_font"
-            android:layout_width="0dp"
-            app:layout_constraintWidth_max="@dimen/voip_dialog_button_max_width"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="10dp"
-            android:background="@drawable/shape_rect_gray_button"
-            android:gravity="center"
-            android:onClick="@{() -> viewModel.onCancelClicked()}"
-            android:padding="10dp"
-            android:text="@{viewModel.cancelLabel, default=Cancel}"
-            android:visibility="@{viewModel.showCancel ? View.VISIBLE : View.GONE}"
-            app:layout_constraintEnd_toStartOf="@id/delete_button"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toStartOf="@id/background"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintHorizontal_chainStyle="spread"/>
-
-        <TextView
-            android:id="@+id/delete_button"
-            style="@style/big_orange_button_font"
-            android:layout_width="0dp"
-            app:layout_constraintWidth_max="@dimen/voip_dialog_button_max_width"
-            android:layout_height="wrap_content"
-            android:background="@drawable/shape_rect_orange_button"
-            android:gravity="center"
-            android:onClick="@{() -> viewModel.onDeleteClicked()}"
-            android:padding="10dp"
-            android:text="@{viewModel.deleteLabel, default=Delete}"
-            android:visibility="@{viewModel.showDelete ? View.VISIBLE : View.GONE}"
-            app:layout_constraintEnd_toStartOf="@id/ok_button"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toEndOf="@id/cancel_button" />
-
-        <TextView
-            android:id="@+id/ok_button"
-            style="@style/big_orange_button_font"
-            android:layout_width="0dp"
-            app:layout_constraintWidth_max="@dimen/voip_dialog_button_max_width"
-            android:layout_height="wrap_content"
-            android:layout_marginEnd="10dp"
-            android:background="@drawable/shape_rect_green_button"
-            android:gravity="center"
-            android:onClick="@{() -> viewModel.onOkClicked()}"
-            android:padding="10dp"
-            android:text="@{viewModel.okLabel, default=OK}"
-            android:visibility="@{viewModel.showOk ? View.VISIBLE : View.GONE}"
-            app:layout_constraintEnd_toEndOf="@id/background"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintBottom_toBottomOf="parent"
-            app:layout_constraintStart_toEndOf="@id/delete_button" />
-
         <androidx.constraintlayout.widget.Barrier
             android:id="@+id/top_barrier"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             app:barrierDirection="top"
-            app:barrierMargin="-10dp"
+            app:constraint_referenced_ids="dialog_icon, dialog_title, dialog_message" />
-            app:constraint_referenced_ids="ok_button,delete_button,cancel_button"/>
 
-        <androidx.constraintlayout.widget.Barrier
+        <View
-            android:id="@+id/bottom_barrier"
+            android:id="@+id/background"
-            android:layout_width="wrap_content"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            android:layout_marginStart="10dp"
+            android:layout_marginEnd="10dp"
+            android:layout_marginBottom="-20dp"
+            android:layout_marginTop="-10dp"
+            android:background="@drawable/shape_dialog_background"
+            app:layout_constraintBottom_toBottomOf="@id/buttons_bottom_barrier"
+            app:layout_constraintTop_toTopOf="@id/top_barrier"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent" />
+
+        <ImageView
+            android:id="@+id/dialog_icon"
+            android:layout_width="60dp"
+            android:layout_height="60dp"
+            android:layout_marginBottom="10dp"
+            android:adjustViewBounds="true"
+            android:contentDescription="@{viewModel.title}"
+            android:src="@{viewModel.iconResource, default=@drawable/security_alert_indicator}"
+            android:visibility="@{viewModel.showIcon ? View.VISIBLE : View.GONE}"
+            app:layout_constraintVertical_chainStyle="packed"
+            app:layout_constraintBottom_toTopOf="@id/dialog_title"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <TextView
+            android:id="@+id/dialog_title"
+            style="@style/dialog_title_font"
+            android:layout_width="0dp"
             android:layout_height="wrap_content"
-            app:barrierDirection="bottom"
+            android:layout_margin="10dp"
-            app:barrierMargin="20dp"
+            android:gravity="center"
-            app:constraint_referenced_ids="ok_button,delete_button,cancel_button"/>
+            android:text="@{viewModel.title, default=Title}"
+            android:visibility="@{viewModel.showTitle ? View.VISIBLE : View.GONE}"
+            app:layout_constraintBottom_toTopOf="@id/dialog_message"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_icon" />
 
         <TextView
             android:id="@+id/dialog_message"
             style="@style/dialog_message_font"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:padding="10dp"
             android:layout_marginStart="20dp"
+            android:layout_marginTop="10dp"
             android:layout_marginEnd="20dp"
             android:gravity="center"
             android:text="@{viewModel.message, default=Message}"
-            app:layout_constraintBottom_toTopOf="@id/top_barrier"
+            app:layout_constraintBottom_toTopOf="@id/dialog_zrtp_1"
-            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintEnd_toEndOf="@id/background"
-            app:layout_constraintStart_toStartOf="parent" />
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_title" />
+
+        <androidx.constraintlayout.widget.Group
+            android:id="@+id/dialog_zrtp_group"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:visibility="@{viewModel.showZrtp ? View.VISIBLE : View.GONE}"
+            app:constraint_referenced_ids="dialog_zrtp_1, dialog_zrtp_sas_1, dialog_zrtp_2, dialog_zrtp_sas_2" />
+
+        <TextView
+            android:id="@+id/dialog_zrtp_1"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="10dp"
+            android:gravity="center"
+            android:text="@string/dialog_zrtp_local_sas"
+            android:textAppearance="@style/dialog_zrtp_white_font"
+            app:layout_constraintBottom_toTopOf="@id/dialog_zrtp_sas_1"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_message" />
+
+        <TextView
+            android:id="@+id/dialog_zrtp_sas_1"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="5dp"
+            android:gravity="center"
+            android:text="@{viewModel.zrtpReadSas}"
+            android:textAppearance="@style/dialog_zrtp_colored_font"
+            app:layout_constraintBottom_toTopOf="@id/dialog_zrtp_2"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_zrtp_1" />
+
+        <TextView
+            android:id="@+id/dialog_zrtp_2"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="10dp"
+            android:gravity="center"
+            android:text="@string/dialog_zrtp_remote_sas"
+            android:textAppearance="@style/dialog_zrtp_white_font"
+            app:layout_constraintBottom_toTopOf="@id/dialog_zrtp_sas_2"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_zrtp_sas_1" />
+
+        <TextView
+            android:id="@+id/dialog_zrtp_sas_2"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginLeft="5dp"
+            android:gravity="center"
+            android:text="@{viewModel.zrtpListenSas}"
+            android:textAppearance="@style/dialog_zrtp_colored_font"
+            app:layout_constraintBottom_toTopOf="@id/cancel_button"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_zrtp_2" />
+
+        <TextView
+            android:id="@+id/cancel_button"
+            style="@style/big_orange_button_font"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="10dp"
+            android:layout_marginTop="20dp"
+            android:layout_marginBottom="10dp"
+            android:background="@drawable/shape_rect_gray_button"
+            android:ellipsize="end"
+            android:gravity="center"
+            android:onClick="@{() -> viewModel.onCancelClicked()}"
+            android:padding="10dp"
+            android:singleLine="true"
+            android:text="@{viewModel.cancelLabel, default=Cancel}"
+            android:visibility="@{viewModel.showCancel ? View.VISIBLE : View.GONE}"
+            app:layout_constraintEnd_toStartOf="@id/delete_button"
+            app:layout_constraintHorizontal_chainStyle="spread"
+            app:layout_constraintStart_toStartOf="@id/background"
+            app:layout_constraintTop_toBottomOf="@id/dialog_zrtp_sas_2"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintWidth_max="@dimen/voip_dialog_button_max_width" />
+
+        <TextView
+            android:id="@+id/delete_button"
+            style="@style/big_orange_button_font"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="10dp"
+            android:layout_marginTop="20dp"
+            android:layout_marginEnd="10dp"
+            android:layout_marginBottom="10dp"
+            android:background="@drawable/shape_rect_orange_button"
+            android:ellipsize="end"
+            android:gravity="center"
+            android:onClick="@{() -> viewModel.onDeleteClicked()}"
+            android:padding="10dp"
+            android:singleLine="true"
+            android:text="@{viewModel.deleteLabel, default=Delete}"
+            android:visibility="@{viewModel.showDelete ? View.VISIBLE : View.GONE}"
+            app:layout_constraintEnd_toStartOf="@id/ok_button"
+            app:layout_constraintStart_toEndOf="@id/cancel_button"
+            app:layout_constraintTop_toBottomOf="@id/dialog_zrtp_sas_2"
+            app:layout_constraintWidth_max="@dimen/voip_dialog_button_max_width" />
+
+        <TextView
+            android:id="@+id/ok_button"
+            style="@style/big_orange_button_font"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginEnd="10dp"
+            android:layout_marginBottom="10dp"
+            android:background="@drawable/shape_rect_green_button"
+            android:ellipsize="end"
+            android:gravity="center"
+            android:onClick="@{() -> viewModel.onOkClicked()}"
+            android:padding="10dp"
+            android:singleLine="true"
+            android:text="@{viewModel.okLabel, default=OK}"
+            android:visibility="@{viewModel.showOk ? View.VISIBLE : View.GONE}"
+            app:layout_constraintEnd_toEndOf="@id/background"
+            app:layout_constraintStart_toEndOf="@id/delete_button"
+            app:layout_constraintTop_toTopOf="@id/delete_button"
+            app:layout_constraintWidth_max="@dimen/voip_dialog_button_max_width" />
+
+        <androidx.constraintlayout.widget.Barrier
+            android:id="@+id/buttons_top_barrier"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:barrierDirection="bottom"
+            app:constraint_referenced_ids="dialog_message, dialog_zrtp_sas_2" />
+
+        <androidx.constraintlayout.widget.Barrier
+            android:id="@+id/buttons_bottom_barrier"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            app:barrierDirection="bottom"
+            app:constraint_referenced_ids="ok_button,delete_button,cancel_button" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 

app/src/main/res/values-es/strings.xml

@@ -414,7 +414,7 @@
     <string name="call_settings_media_encryption_none">Ninguno</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="call_settings_encryption_mandatory_title">La encriptación de los medios es obligatoria</string>
     <string name="call_settings_overlay_title">Notificación de llamada superpuesta</string>
     <string name="call_settings_system_wide_overlay_summary">Se le pedirá que conceda el permiso de superposición</string>

app/src/main/res/values-fr/strings.xml

@@ -277,7 +277,8 @@
     <string name="call_settings_media_encryption_none">Aucun</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_zrtp_post_quantum">ZRTP Post Quantique</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="content_description_menu_history">Historique</string>
     <string name="content_description_go_to_contact">Afficher les détails du contact</string>
     <string name="content_description_call_quality_0">La qualité est très mauvaise</string>
@@ -737,4 +738,10 @@
     <string name="conference_scheduled_terminated_filter">Terminées</string>
     <string name="conference_scheduled_future_filter">Programmées</string>
     <string name="content_description_chat_message_meeting_attachment">Invitation à une réunion</string>
+    <string name="call_stats_media_encryption">Chiffrement du média :</string>
+    <string name="call_stats_zrtp_cipher_algo">Algorithme de chiffrement :</string>
+    <string name="call_stats_zrtp_key_agreement_algo">Algorithme d\'échange de clef :</string>
+    <string name="call_stats_zrtp_hash_algo">Algorithme de hachage :</string>
+    <string name="call_stats_zrtp_auth_tag_algo">Algorithme d\'authentification :</string>
+    <string name="call_stats_zrtp_sas_algo">Algorithme SAS :</string>
 </resources>

app/src/main/res/values-hu/strings.xml

@@ -224,7 +224,7 @@
     <string name="call_settings_encryption_title">Média titkosítás</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="call_settings_encryption_mandatory_title">Média titkosítása kötelező</string>
     <string name="call_settings_overlay_title">Hívás értesítés átfedése</string>
     <string name="call_settings_system_wide_overlay_title">Átfedés megjelenítése az alkalmazáson kívül</string>

app/src/main/res/values-pt/strings.xml

@@ -254,7 +254,7 @@
     <string name="call_settings_media_encryption_none">Nenhuma</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="call_settings_use_telecom_manager_title">Melhore as interações com dispositivos bluetooth</string>
     <string name="call_settings_use_telecom_manager_summary">Requer algumas permissões extras</string>
     <string name="call_settings_system_wide_overlay_title">Mostrar sobreposição fora do aplicativo</string>

app/src/main/res/values-ru/strings.xml

@@ -256,7 +256,7 @@
     <string name="call_settings_go_to_android_notification_settings">Настройки уведомлений Android</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="call_settings_auto_start_recording_title">Автоматически начинать запись разговоров</string>
     <string name="chat_settings_file_sharing_url_title">URL сервера обмена</string>
     <string name="chat_settings_file_sharing_url_summary">Не изменяйте, если вы не знаете, что делаете!</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -271,7 +271,7 @@
     <string name="call_settings_media_encryption_none">無</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="call_settings_system_wide_overlay_summary">系統將請您授權「顯示在其他應用程式上層」權限</string>
     <string name="call_settings_rfc2833_dtmf_title">傳送帶内撥號音（RFC 2833）</string>
     <string name="call_settings_auto_start_title">立即開始通話</string>

app/src/main/res/values/strings.xml

@@ -360,6 +360,12 @@
     <string name="call_stats_decoder_name">Decoder:</string>
     <string name="call_stats_player_filter">Player filter:</string>
     <string name="call_stats_capture_filter">Capture filter:</string>
+    <string name="call_stats_media_encryption">Media encryption:</string>
+    <string name="call_stats_zrtp_cipher_algo">Cipher algorithm:</string>
+    <string name="call_stats_zrtp_key_agreement_algo">Key agreement algorithm:</string>
+    <string name="call_stats_zrtp_hash_algo">Hash algorithm:</string>
+    <string name="call_stats_zrtp_auth_tag_algo">Authentication algorithm:</string>
+    <string name="call_stats_zrtp_sas_algo">SAS algorithm:</string>
 
     <!-- Assistant -->
     <string name="assistant_welcome_title">Welcome</string>
@@ -497,7 +503,8 @@
     <string name="call_settings_media_encryption_none">None</string>
     <string name="call_settings_media_encryption_srtp">SRTP</string>
     <string name="call_settings_media_encryption_zrtp">ZRTP</string>
-    <string name="call_settings_media_encryption_dtls">DTLS</string>
+    <string name="call_settings_media_encryption_zrtp_post_quantum">Post Quantum ZRTP</string>
+    <string name="call_settings_media_encryption_dtls">DTLS-SRTP</string>
     <string name="call_settings_encryption_mandatory_title">Media encryption mandatory</string>
     <string name="call_settings_use_telecom_manager_title">Improve interactions with bluetooth devices</string>
     <string name="call_settings_use_telecom_manager_summary">Requires some extra permissions</string>

app/src/main/res/values/styles.xml

@@ -341,7 +341,7 @@
 
     <style name="dialog_title_font" parent="@android:style/TextAppearance.Medium">
         <item name="android:textColor">@color/white_color</item>
-        <item name="android:textSize">21.7sp</item>
+        <item name="android:textSize">20sp</item>
         <item name="android:textStyle">bold</item>
         <item name="android:fontFamily">sans-serif</item>
         <item name="android:lineSpacingExtra">6.7sp</item>
@@ -349,7 +349,7 @@
 
     <style name="dialog_message_font" parent="@android:style/TextAppearance.Small">
         <item name="android:textColor">@color/white_color</item>
-        <item name="android:textSize">21sp</item>
+        <item name="android:textSize">18sp</item>
     </style>
 
     <style name="dialog_cancel_button_font" parent="@android:style/TextAppearance.Medium">
@@ -374,7 +374,7 @@
 
     <style name="dialog_zrtp_white_font" parent="@android:style/TextAppearance.Medium">
         <item name="android:textColor">@color/white_color</item>
-        <item name="android:textSize">20sp</item>
+        <item name="android:textSize">18sp</item>
         <item name="android:fontFamily">sans-serif</item>
         <item name="android:lineSpacingExtra">8.3sp</item>
     </style>