[network/ruqola] src/core/encryption: Allow to decrypt one room

Git commit e3420cb785adc7e4976b5764bc5ef5789268e3bc by Laurent Montel.
Committed on 06/08/2026 at 05:20.
Pushed by mlaurent into branch 'master'.

Allow to decrypt one room

M  +24   -3    src/core/encryption/e2ekeymanager.cpp
M  +2    -0    src/core/encryption/e2ekeymanager.h

https://invent.kde.org/network/ruqola/-/commit/e3420cb785adc7e4976b5764bc5ef5789268e3bc

diff --git a/src/core/encryption/e2ekeymanager.cpp b/src/core/encryption/e2ekeymanager.cpp
index 63b13b3fbc..e16db85f62 100644
--- a/src/core/encryption/e2ekeymanager.cpp
+++ b/src/core/encryption/e2ekeymanager.cpp
@@ -587,9 +587,9 @@ bool E2eKeyManager::decryptRoomsSessionKeys() const
     }
 
     RoomModel *model = mAccount->roomModel();
-    for (Room *room : model->rooms()) {
-        if (!room->e2EKey().isEmpty()) {
-            room->decryptSessionKeyWithPrivateKey(privateKey);
+    for (Room *r : model->rooms()) {
+        if (!r->e2EKey().isEmpty()) {
+            r->decryptSessionKeyWithPrivateKey(privateKey);
         }
     }
 
@@ -598,4 +598,25 @@ bool E2eKeyManager::decryptRoomsSessionKeys() const
     return true;
 }
 
+bool E2eKeyManager::decryptRoomSessionKeys(Room *r) const
+{
+#if USE_E2E_SUPPORT
+    if (mDecodedPrivateKey.isEmpty()) {
+        return false;
+    }
+
+    RSA *privateKey = EncryptionUtils::privateKeyFromPEM(mDecodedPrivateKey);
+    if (!privateKey) {
+        qCWarning(RUQOLA_ENCRYPTION_LOG) << "decryptRoomsSessionKeys: failed to load private key from PEM";
+        return false;
+    }
+
+    if (!r->e2EKey().isEmpty()) {
+        r->decryptSessionKeyWithPrivateKey(privateKey);
+    }
+    RSA_free(privateKey);
+#endif
+    return true;
+}
+
 #include "moc_e2ekeymanager.cpp"
diff --git a/src/core/encryption/e2ekeymanager.h b/src/core/encryption/e2ekeymanager.h
index e71e0c33eb..3209b5f4d0 100644
--- a/src/core/encryption/e2ekeymanager.h
+++ b/src/core/encryption/e2ekeymanager.h
@@ -14,6 +14,7 @@ namespace QKeychain
 {
 class Job;
 }
+class Room;
 class LIBRUQOLACORE_EXPORT E2eKeyManager : public QObject
 {
     Q_OBJECT
@@ -50,6 +51,7 @@ public:
 
     void verifyExistingKeyForTest(const QJsonObject &json);
     [[nodiscard]] bool decryptRoomsSessionKeys() const;
+    [[nodiscard]] bool decryptRoomSessionKeys(Room *r) const;
 
 Q_SIGNALS:
     void needDecodeEncryptionKey();