Unable to view encrypted pdf files

[Faizan-26]

Bug description

Environment

• Flutter version: 3.32.5
• syncfusion_flutter_pdfviewer version: 30.1.39
• syncfusion_flutter_pdf version: 30.1.39
• Platform: Android 10

Expected Behavior

The PDF should load and display correctly after entering the correct password in the dialog.

Actual Behavior

• Password dialog appears correctly
• After entering the correct password, the viewer shows a blank page
• Error description : there was an error opening this document

Additional Context

• The same PDF can be opened in other PDF viewers with the same password
• The encryption and password protection are confirmed working as the PDF requires a password in other viewers

Steps to reproduce

1. Encrypt Pdf File.
2. Open using syncfusion pdf viewer

Code sample

Code sample

 body: SfPdfViewer.file(
          File(widget.pdfFile!),
          key: ValueKey(widget.pdfFile),
          onDocumentLoadFailed: (PdfDocumentLoadFailedDetails details) {
            ScaffoldMessenger.of(context).showSnackBar(
              SnackBar(content: Text('Error: ${details.error}')),
            );
            print(details.description);
            print(details.error);
          },
          onDocumentLoaded: (PdfDocumentLoadedDetails details) {
            print(
                'PDF loaded successfully: ${details.document.pages.count} pages');
          },
        ),

Screenshots or Video

Screenshots / Video demonstration

Stack Traces

Stack Traces

+639 ms] D/ProfileInstaller(17461): Installing profile for com.easypdf.android
[+5875 ms] I/flutter (17461): The provided `password` property is empty so unable to load the encrypted document.
[   +1 ms] I/flutter (17461): Empty Password Error
[+1034 ms] D/ImeFocusController(17461): onViewFocusChanged, view=io.flutter.embedding.android.FlutterView{e627402 VFE...... .F...... 0,0-1080,2340 #1},
mServedView=DecorView@5a0299b[MainActivity]
[   +1 ms] V/ImeFocusController(17461): checkFocus: view=DecorView@5a0299b[MainActivity] next=io.flutter.embedding.android.FlutterView{e627402 VFE...... .F....ID 0,0-1080,2340 #1}
force=false package=com.easypdf.android
[  +81 ms] D/InputConnectionAdaptor(17461): The input method toggled cursor monitoring on
[  +95 ms] D/InsetsController(17461): show(ime(), fromIme=true)
[  +13 ms] D/InsetsController(17461): show(ime(), fromIme=true)
[+8748 ms] I/flutter (17461): There was an error opening this document.
[   +1 ms] I/flutter (17461): Error
[ +153 ms] D/InputConnectionAdaptor(17461): The input method toggled cursor monitoring off
[+4038 ms] I/AssistStructure(17461): Flattened final assist data: 468 bytes, containing 1 windows, 3 views
[   +5 ms] D/InputConnectionAdaptor(17461): The input method toggled cursor monitoring on
[  +11 ms] D/InsetsController(17461): show(ime(), fromIme=true)

On which target platforms have you observed this bug?

Android

Flutter Doctor output

Doctor output

PS D:\development\Easy-Pdf\easy_pdf> flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel stable, 3.32.5, on Microsoft Windows [Version 10.0.19045.6093], locale en-PK)
[√] Windows Version (10 Pro 64-bit, 22H2, 2009)
[√] Android toolchain - develop for Android devices (Android SDK version 35.0.1)
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Build Tools 2022 17.14.7)
[√] Android Studio (version 2024.3)
[√] VS Code (version 1.101.2)
[√] Connected device (4 available)
[√] Network resources

• No issues found!

[immankumarsync]

Hi @Faizan-26,
We are unable to replicate the reported issue, and the encrypted PDF document is loaded properly on Android 10 platform. Please find the sample we used to replicate the issue and the video recording of the issue replication attempt.

Sample.zip

Screen.Recording.2025-07-11.171203.mp4

We suspect that the issue you are facing is document specific. Kindly share the document in which you are facing the issue to replicate the issue at our end and provide you with the prompt solution at the earliest.

If you feel that the document cannot be shared publicly, you may create a ticket in our support portal to share the requested files securely.

[Ahmed-hussien90]

Same problem

[immankumarsync]

We suspect that the issue you are facing is document specific. Kindly share the document in which you are facing the issue to replicate the issue at our end and provide you with the prompt solution at the earliest.

If you feel that the document cannot be shared publicly, you may create a ticket in our support portal to share the requested files securely.

@Ahmed-hussien90, kindly share the PDF document (and the password to open the PDF document) in which you face the issue to analyze the issue at our end.

[Faizan-26]

@immankumarsync , I have tried many pdf files not specific file still faced same issue. Although i am an attaching example file with password : 123456. Facing same issue on all files.

test232453.pdf

For now, I have implemented a temporary workaround to unlock the PDF file before viewing it and then lock it again with the same password upon disposal.

[immankumarsync]

@Faizan-26, the shared document is loaded properly in the SfPdfViewer widget. Please find the attached video for reference. Kindly run the attached sample and check whether the similar issue occurs in it.

Screen.Recording.2025-07-15.140118.mp4

sfpdfviewer_gh2393.zip

Kindly share a simple sample or a modified version of our sample to replicate the issue at our end.

[Deepak1799]

We are closing this issue since we do not have enough information to proceed further. You can reopen this anytime and share the requested details to proceed further.