I am trying to understand how each app and appdata is encrypted for apps installed on SD card.
is it possible to decrypt it or disable this mechanism by registry modification?
How some appdata from SD card can be recovered?
Looking for technical details. Is there any book on this subject?
Regards
BT
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I have a SGH-T999 with Android 4.0.4 which I'm trying to encrypt the SD card of under Settings->Security->Encrypt SD Card.
Under Encryption settings I can select any combination of settings and choose continue after which I am prompted to confirm my password.
However next I get a screen similar to the following:
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Disable SD card encryption?
ø Device will not encrypt new files on SD card
ø Device will decrypt encrypted SD card
ø Decryption may take along time depending on the amount of data. It is recommended that you plug device into charger
ø All open files on SD card will be closed
ø During this process, SD card will not be available
[ Apply ]
--
Any ideas what's going on? I was able to encrypt the device without issue...
Hi dear experts,
Wondering if someone can suggest me if there is any way to recover some picture files from encrypted SD Card.
The issue is that I'm having some problems with my phone connecting to the cell towers and I was trying to show to the Samsung tech support remotely, he ask me to factory reset the phone and I forgot that the SD card was also encrypted with some pictures that I'd like to save.
I red somewhere that some phones or Android versions use the Serial number + the encryption PIN to encrypt the storage, so I encrypt again the phone using the same PIN, then format the SD card, encrypt the SD card and then copy the files from my backup folder in my PC putting the SD card in my PC, copy the files on the PC then install in the phone but still the files are not able to decrypt.
The phone is using the latest standard Tmobile ROM 4.1.2.
Thanks in advance.
Just wanted to give this specific issue with write access to ext SD card for 3rd party apps its own thread. The fix is not mine, found it in another thread with different problem.
After upgrading my HTC One M8 to Lollipop, apps that need write access to the ext SD will get a (confusing) screen in which you need to approve access to the ext SD card.
This is due to Google's new APIs for apps accessing the ext SD card.
However the Documents app in which you can select the ext SD card for write/delete operation, will crash if the ext SD card is not labelled/named.
The fix is simple: use your laptop/PC to label the SD card.
thanks to: http://forum.xda-developers.com/showpost.php?p=58500801&postcount=5
Under Settings > General > Security
I have some questions regarding the encryption
If I encrypt my SD card:
Will new files I transfer from my phone storage to the SD card be encrypted automatically? Or will I have to re-encrypt the entire SD card
How do I de-encrypt the SD card? Can it only be done with the specific phone that I used to encrypt it? Meaning if I encrypt my sd card, and my phone breaks in the futute, I'll never be able to de-encrypt it?
Can I access files on the encrypted card using a file explorer? If so, do I have to enter a password every time I want to look at a file?
That is all. Thanks you in advance.
I’m wondering if there’s a way to make the whole sd-card encrypted and the android system recognizing it as an external sd card? The purpose being that data is safe if the phone would get lost/stolen. I’ve been looking into this guide using cryptsetup, but it only works with an image, and only part of the SD card.