Android Question video/audio/pdf encryption

[zavaree]

Hi
i want encrypt video/audio/pdf file.
My files are on the server. when user open/play file download file and decryption in app and run.
which way you suggested for me ?

 

[Erel]

You can use B4XEncryption to encrypt or decrypt the files. However if the files are large then it might be too slow.

Another option is to stream the video directly from the server.

 

[zavaree]

You can use B4XEncryption to encrypt or decrypt the files. However if the files are large then it might be too slow.

Another option is to stream the video directly from the server.

thx erel.
How much file size should I use to use this function?
because i want user play/open file in offline mode to.

 

[Erel]

Hard to say. You should test it. You can use B4J to encrypt the file.
https://www.b4x.com/android/forum/threads/b4xencryption.48177/#content

How to convert a file to an array of bytes?
Here: https://www.b4x.com/android/forum/threads/70111/#content