2 Part Google Authenticator QR code fails to decode part 2 image

[undermark5]

Version

2.2.2

Source

Google Play

Vault encryption

Yes (with biometric unlock)

Device

Pixel 5a

Android version

Android 13

ROM

Rooted Stock

Steps to reproduce

Generate 2 part export QR code from Google Authenticator, save images as screenshots, try to import via scanning image selecting both images.

What do you expect to happen?

Import to be successful

What happens instead?

Fails with exception com.google.zxing.NotFoundException

Log

No response

[michaelschattgen]

Thank you for your report. Sometimes we get similar reports and we notice that the ZXing libary that we use to scan qr codes can be a bit hit or miss in certain situations when scanning from images. Could you try cropping the images to just the QR Code (while leaving some space around the QR code) and try again?

[undermark5]

Ya, I saw some stack overflow posts discussing issues with image sizes being to large, so I already tried cropping it some, and just tried cropping it again to basically as small as possible, and the same error occurs, obviously I can export a subset of my codes and theoretically could import them in smaller batches, or transfer them to another device and try the camera instead.

[michaelschattgen]

Hmm yeah I just tried to export a lot of codes through the Export feature in Google Authenticator which also gave me 2 QR codes. Both screenshots (Pixel 7 Pro) seem to work for me in both dark mode and light mode, even without cropping. I'll try to use my Pixel 5a tomorrow in case it has something to do with screen size. Otherwise it's going to be really difficult for us to fix this.

[undermark5]

I mean, I do Android development full time, so I'm pretty comfortable with building and running apps, so I may take a closer look myself, may not come across anything, but can't hurt to try.

[alexbakker]

If you don't mind spending some time, it would be very helpful if we had an example QR code to test with. It can't contain any of your actual TOTP secrets of course, so you'd have to import some dummy ones into a new install of Google Authenticator and export those until you get another QR code that fails to scan in Aegis.

I tried to reproduce this, but couldn't find a case where this goes wrong in the 40 Google Authenticator QR codes I tried: https://alexbakker.me/u/p5cankx54c.mp4

_{(Google Authenticator takes a hilarious 10 seconds to start with that many entries)}

[OneZenD]

I had 51 to export and got 6 QR's. They all failed with the above message, regardless of a cropped photo or not, when attempting to import from the first screen.

When I skipped the initial import and completed setup of the app then did the import from the + Scan image option. I would get a different error stating that Codes 2,3,4,5,6 were not found. But it said this for all 6 QR's. It goes on to mention that you might be missing some of your tokens. You can cancel or Import 10 tokens Anyway. I did the import anyway on all 6 QR's and all of them are now in Aegis.

Hope this info might help troubleshoot or others who are moving over a large number.

I am also wondering if cutting 10 unit batches during the export could also be a possible workaround?

[alexbakker]

@OneZenD

That doesn't sound related to this issue.

They all failed with the above message, regardless of a cropped photo or not, when attempting to import from the first screen.

As you discovered, you can't import from QR codes during the initial setup process of Aegis.

I would get a different error stating that Codes 2,3,4,5,6 were not found

If you selected all of the 6 QR code images in one go, instead of using "Scan image" 6 times, Aegis would not have shown an error telling you about missing QR codes.

[waldis007]

@alexbakker

I would get a different error stating that Codes 2,3,4,5,6 were not found

If you selected all of the 6 QR code images in one go, instead of using "Scan image" 6 times, Aegis would not have shown an error telling you about missing QR codes.

I tried scanning all of my 6 QR codes via "+Scan Image" and am getting "Incomplete Google Authenticator export detected. Some QR codes are missing from your import. The following codes were not found: QR code 3, QR code 4" And lets me import only 37 codes.

EDIT: I recreated the 6 QR codes in Google Authenticator, this time it complained about the QR code 1 and QR code 2, and offered to import 37 tokens again...

ANOTHER EDIT: It is giving the following error on those QR code images:

[image_name].jpg/jpeg: com.beemdevelopment.aegis.helpers.QrCodeHelper$DecodeError: com.google.zxing.NotFoundException

YET ANOTHER EDIT: I succeeded to import all my codes by exporting no more than 20 codes from Google Authenticator at a time, thus producing two QR codes, screenshot them, and then via "+Scan Image" which worked fine. So there are issues with either the generation of the QR codes via Google Authenticator, or... But, yeah, the two-at-a-time solution works fine.