Display upgrade verification prompt

Riot/Assets/en.lproj/Vector.strings

@@ -1560,6 +1560,11 @@ Tap the + to start adding people.";
 "key_verification_self_verify_current_session_alert_message" = "Other users may not trust it.";
 "key_verification_self_verify_current_session_alert_validate_action" = "Verify";
 
+// Legacy to Rust security upgrade
+
+"key_verification_self_verify_security_upgrade_alert_title" = "Encryption upgraded";
+"key_verification_self_verify_security_upgrade_alert_message" = "The end-to-end encryption has been upgraded to be more secure. Please re-verify your account.";
+
 // Unverified sessions
 "key_verification_alert_title" = "You have unverified sessions";
 "key_verification_alert_body" = "Review to ensure your account is safe.";

Riot/Experiments/CryptoSDKFeature.swift

@@ -40,7 +40,18 @@ import MatrixSDKCrypto
         RiotSettings.shared.enableCryptoSDK
     }
 
+    var needsVerificationUpgrade: Bool {
+        get {
+            return RiotSettings.shared.showVerificationUpgradeAlert
+        }
+        set {
+            RiotSettings.shared.showVerificationUpgradeAlert = newValue
+        }
+    }
+
     private static let FeatureName = "ios-crypto-sdk"
+    private static let FeatureNameV2 = "ios-crypto-sdk-v2"
+
     private let remoteFeature: RemoteFeaturesClientProtocol
     private let localFeature: PhasedRolloutFeature
 
@@ -98,6 +109,13 @@ import MatrixSDKCrypto
     }
 
     private func isFeatureEnabled(userId: String) -> Bool {
-        remoteFeature.isFeatureEnabled(Self.FeatureName) || localFeature.isEnabled(userId: userId)
+        // This feature includes app version with a bug, and thus will not be rolled out to 100% users
+        remoteFeature.isFeatureEnabled(Self.FeatureName)
+
+        // Second version of the remote feature with a bugfix and released eventually to 100% users
+        || remoteFeature.isFeatureEnabled(Self.FeatureNameV2)
+
+        // Local feature
+        || localFeature.isEnabled(userId: userId)
     }
 }

Riot/Generated/Strings.swift

@@ -3027,6 +3027,14 @@ public class VectorL10n: NSObject {
   public static var keyVerificationSelfVerifyCurrentSessionAlertValidateAction: String { 
     return VectorL10n.tr("Vector", "key_verification_self_verify_current_session_alert_validate_action") 
   }
+  /// Your end-to-end encryption algorithms have been upgraded to be more secure. Please re-verify your account.
+  public static var keyVerificationSelfVerifySecurityUpgradeAlertMessage: String { 
+    return VectorL10n.tr("Vector", "key_verification_self_verify_security_upgrade_alert_message") 
+  }
+  /// Encryption upgraded
+  public static var keyVerificationSelfVerifySecurityUpgradeAlertTitle: String { 
+    return VectorL10n.tr("Vector", "key_verification_self_verify_security_upgrade_alert_title") 
+  }
   /// Review
   public static var keyVerificationSelfVerifyUnverifiedSessionsAlertValidateAction: String { 
     return VectorL10n.tr("Vector", "key_verification_self_verify_unverified_sessions_alert_validate_action") 

Riot/Managers/Settings/RiotSettings.swift

@@ -211,6 +211,9 @@ final class RiotSettings: NSObject {
     @UserDefault(key: "hideVerifyThisSessionAlert", defaultValue: false, storage: defaults)
     var hideVerifyThisSessionAlert
 
+    @UserDefault(key: "showVerificationUpgradeAlert", defaultValue: false, storage: defaults)
+    var showVerificationUpgradeAlert
+
     @UserDefault(key: "matrixApps", defaultValue: false, storage: defaults)
     var matrixApps
 

Riot/Modules/Home/AllChats/AllChatsViewController.swift

@@ -985,8 +985,22 @@ extension AllChatsViewController: SplitViewMasterViewControllerProtocol {
     private func presentVerifyCurrentSessionAlert(with session: MXSession) {
         MXLog.debug("[AllChatsViewController] presentVerifyCurrentSessionAlertWithSession")
 
-        let alert = UIAlertController(title: VectorL10n.keyVerificationSelfVerifyCurrentSessionAlertTitle,
-                                      message: VectorL10n.keyVerificationSelfVerifyCurrentSessionAlertMessage,
+        let title: String
+        let message: String
+
+        if
+            let feature = MXSDKOptions.sharedInstance().cryptoSDKFeature,
+            feature.isEnabled && feature.needsVerificationUpgrade
+        {
+            title = VectorL10n.keyVerificationSelfVerifySecurityUpgradeAlertTitle
+            message = VectorL10n.keyVerificationSelfVerifySecurityUpgradeAlertMessage
+        } else {
+            title = VectorL10n.keyVerificationSelfVerifyCurrentSessionAlertTitle
+            message = VectorL10n.keyVerificationSelfVerifyCurrentSessionAlertMessage
+        }
+
+        let alert = UIAlertController(title: title,
+                                      message: message,
                                       preferredStyle: .alert)
 
         alert.addAction(UIAlertAction(title: VectorL10n.keyVerificationSelfVerifyCurrentSessionAlertValidateAction,

changelog.d/pr-7454.change

@@ -0,0 +1 @@
+Verification: Display upgrade verification prompt