iOS local encrypted > "Error loading document: Invalid XOD file: Zip end header data is wrong size"

[Michael Lee]

Hi,

On iOS, we get the error above when viewing local encrypted documents.

We successfully use Cordova file to view local unencrypted documents in iOS.

In Android, using our same Cordova file codebase, we successfully view local encrypted documents in Android.

Q. Has anyone successfully implemented this before ?

Mike

[Matt Parizeau]

Hi Mike,

Can you try this build which contains a fix for viewing documents with Cordova http://www.pdftron.com/ID-zJWLuhTffd3c/WebViewer/WebViewer_2.2.0.46241.zip. Also make sure that if you're setting the "encryption" option in the PDFTron.WebViewer constructor that you also set the option mobileRedirect: false otherwise the encryption parameters won't be able to be applied to the viewer after it redirects.

Matt Parizeau

Software Developer

PDFTron Systems Inc.

[Michael Lee]

Thanks Matt,

Thanks for the response, will try shortly.

We are using HttpPartRetriever().

For the interim and FYI: Encrypted JPG documents initialise (from iOS Cordova File) with StreamingPartRetriever(), but no other formats do.

Mike

[Michael Lee]

Hi Matt,

Still not successful with that build sorry. Will let you know if we have further progress.

I subscribed to the PDFTron Cordova Beta, however Ryan Barr advises nothing for me to see at this present time;

It would be great to see an example of PDFTron initializing encrypted XOD from Cordova File on iOS.

Regards

Mike

[Matt Parizeau]

Hi Mike,

Before preparing that build we tested it by going through the steps in the Cordova sample included with WebViewer. For the encryption specific changes we only changed index.html so that the WebViewer options included the following:

mobileRedirect: false,
encryption: {
  type: 'aes',
  p: 'pass'
}

If you follow these steps are you able to get it to work?

Matt Parizeau

Software Developer

PDFTron Systems Inc.

[Michael Lee]

Hi Matt,

We have that configuration currently. I'll take a look at your cordova example, thanks.

Mike

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[Michael Lee]

Hi Matt,

Can you please provide a private email so we can send you our Cordova implementation; It works on Android, but not iOS.

Regards

Mike

On Tuesday, June 28, 2016 at 12:58:35 PM UTC+12, Michael Lee wrote:

Hi Matt,

We have that configuration currently. I'll take a look at your cordova example, thanks.

Mike

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[Matt Parizeau]

Hi Mike,

You can send to mpar...@pdftron.com, and cc sup...@pdftron.com.

Matt Parizeau

Software Developer

PDFTron Systems Inc.

[Michael Lee]

Thanks for the solution Matt, below.

>>

So to have this working on iOS you should use this build http://www.pdftron.com/ID-zJWLuhTffd3c/WebViewer/WebViewer_2.2.0.47449.zip and in your config file switch to use the StreamingPartRetriever and change the line that sets "decrypt" to: decrypt = window.CoreControls.Encryption.decryptSynchronous;

Mike

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