The Stack Overflow podcast is back! Listen to an interview with our new CEO.

Questions tagged [disk-encryption]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
3
votes
1answer
60 views

Data recovery from encrypted phone based on glitches in the encryption?

To make a long story short I needed to root my phone and didn't notice the warning that unlocking the bootloader erased all contents of the memory. I contacted a data recovery company and told them ...
1
vote
0answers
21 views

Recovery approach for lost partition and encrypted F2FS

The Problem and Mystery My ZTE Axon 7 [Android 7] inexplicably wiped its emulated storage area /storage/emulated/0 while retaining all installed applications, albeit with settings wiped clean. There ...
0
votes
0answers
22 views

What happens to the encryption key on forget sd card?

Recently my sd card, formatted as internal storage, got inaccessible for the phone (moto g5) for some reason. If "forget sd card" option was selected, does it wipe out the sd card encryption key from /...
1
vote
1answer
1k views

TWRP 3.3.0 cannot decrypt data partition

I just updated to TWRP 3.3.0 from older PitchBlackTWRP but now TWRP does not ask for the password any more. Tried manually decrypting and manually wiping from TWRP terminal. Did not help. recovery --...
1
vote
1answer
59 views

Sony F5121: Forgot Device Encryption Passwort, locked bootloader

I forget the device encryption password for my F5121 (locked bootloader). Is there any way to hard-reset the device, so I can use it again (I don't care about the data on it)? I already tried some ...
0
votes
0answers
210 views

How do I check if my Android SD is encrypted?

I can't remember if I encrypted it already or not. How do I verify that? Under SETTINGS - SECURITY - ENCRYPTION, there is just "Encrypted phone", but nothing related to the SD card. The SD is NOT ...
1
vote
1answer
282 views

If /system partition is never encrypted (even in “full-disk” encryption), how is it protected?

It seems that Android's "full-disk-encrytpion" is only concerned about encrypting the data or internal storage partition. It says: Full-disk encryption is the process of encoding all user data on ...
1
vote
1answer
879 views

Remove boot password from the command line

I just tried to remove the boot password on a Android Oreo device using the following command: $ vdc cryptfs changepw password original_password "" 200 5478 0 Even though the status indicated ...
5
votes
1answer
2k views

How can I find out if my device uses FBE or FDE?

Assuming that I have full access (root if neccesary) to a device running vanilla Android 8.1, how can I know if it is using Full Disk Encryption or File Based Encryption?
3
votes
1answer
209 views

Decrypting manually Android 4.4.2 partitions pulled from phone (SM-G313HN)

Way how I got to this point is that my phone somehow had restarted in my pocket and was asking for password which I entered but upon entering password it restarted so I was basically stuck in bootloop....
0
votes
2answers
110 views

What's the point of encryption with 3x3 in OnePlus 5 if it has 409104 combinations meaning it can be cracked under a second with any modern processor? [closed]

I am not sure what I am missing, but decryption the sdcard should be as easy as opening it if it it that few possible combinations. So what's the point of it? To clarify I mean booting into recovery ...
1
vote
0answers
210 views

Android 5.1 full phone encryption stuck 12+ hours in

Similar thread to this one. None of the answers were helpful. It's an unrooted Android 5.1. The device has been factory reset. Once I begin the encryption process, screen is stuck with displaying ...
3
votes
1answer
125 views

On devices with encryption enabled, can any apps start before the PIN is entered?

On devices with encryption enabled that require you to enter a PIN before the device finishes booting, can any apps (including built-in ones like chrome or gmail) start before the PIN is entered?
1
vote
1answer
193 views

A way to enable data encryption by default (device to be encrypted on first boot)

I did some research on data security that Android has in it's implementation FDE and FBE. I have a clear picture on how both work, but I need something a little different. What is the best way to ...
0
votes
1answer
1k views

Do android phones have hardware chips for encryption? If it's software only, then what is the performance/battery impact?

Do android phones have hardware support for the OOTB full phone encryption or is it entirely done in software? If there are phones which have hardware support for encryption then where could I find a ...
0
votes
2answers
2k views

How do I encrypt a new SD card?

I'm on Android Nougat with an encrypted phone. I added a new SD card but cannot find an option to encrypt it too. How do I go about encrypting the new SD card?
1
vote
0answers
1k views

Encryption in Vivo android phones

Vivo phones like Y53, does not have any option for full device encryption or SD card encryption. Is it enabled by default? Are there ways to do it using Third party apps?
1
vote
1answer
698 views

LineageOS encryption not working dispite being told it is

I used to use cyanogenmod 13 on my nexus 5, i had the encryption enabled and it would ask me for my passcode at boot and i could not access any data from anything until i did this. I've now updated ...
1
vote
0answers
126 views

How can I allow a second user account to unlock my device after a reboot?

I recently damaged the screen on my phone and am sending it in for repair. The repair shop I am using wants to be able to access certain features of the device, like the camera, Wi-Fi, etc, in order ...
2
votes
0answers
379 views

How to decrpyt & extract data from encrypted removable SD card from another device?

My Xperia z5 died for an unknown reason and I had to send it for repair. I had an SD card inside for my pictures and kept it home. After a longer time, Sony sent me a new phone. Happy, I put back my ...
0
votes
1answer
77 views

Encryption state after changing PIN

I enabled device encryption but android didn't gave me the chance to choose a new password instead it used the lock screen's. I came back to screen lock settings and changed the password and ...
2
votes
1answer
992 views

Stuck in boot after encrypting

Device Name: Lenovo K3 Note OS: Lineage OS 14.1 (Android 7.1) Recovery: CWM ; Accessible Bootloader Status: Unlocked and Accessible Root Status: Rooted Accessible via adb I used the Android's ...
2
votes
1answer
2k views

Decrypt /data without formatting

As the title suggests, is it possible on Android N (7.0/7.1)? I Googled around but all solution suggests that I format /data. And if I keep using the stock ROM without flashing Forced Encryption ...
6
votes
1answer
3k views

Nougat: How to use Full Disk Encryption instead of File Based Encryption?

Nougat comes with File Based Encryption (FBE) and Direct Boot. I would like to return to Full Disk Encryption (FDE) instead (or in addition to FBE) and make sure the data partition is fully encrypted ...
2
votes
1answer
5k views

How to Have Device Encryption With Magisk Systemless Root Installed?

I am currently owning a OnePlus 3 64 GB device rooted with Magisk v13.0 (96f8efc) and MagiskSU's systemless root, and using the following ROM, which is based of Android 7.1.2 (Lieanage OS): ...
1
vote
1answer
96 views

Undo failed encryption?

I am on Android 6 (AOKP), TWRP installed, and Xposed/Xprivacy. I wanted to encrypt the device from the settings dialog but apparently that failed - it just sits there with the boot animation doing ...
1
vote
1answer
3k views

Moto G3 (android marshmallow) not detecting SD card anymore (solution?)

About a month ago the Moto G (3rdGen) of my wife was not able to recognize the SD-card 32GB Trancend premium 400x (which was formatted as adoptable storage) anymore. On this card were very important ...
2
votes
0answers
177 views

Transfer adoptable SD card to another ROM

Is it possible to use an adoptable SD card on another ROM, by copying the encryption key located at /data/misc/vold/*.key? According to the Android documentation : .. Keys are associated with ...
1
vote
0answers
55 views

Benefit of using Android encryption if my files are in sdcard?

I tried using Settings > Security > Encryption but found out it did not encrypt the sdcard. My question now is, what kind of data is being protected by Android's built in encryption ? Is there ...
2
votes
0answers
169 views

Where are the TEE's keys stored and under which conditions are they reset?

Context: full-disk encryption in Android 6.0, specifically key derivation and storage. I have a device running Android 6.0 with full disk encryption. I need to make a backup of the device, wipe the ...
6
votes
0answers
380 views

Is it possible to crack encrypted device?

I have device powered by Qualcomm MSM8974AC Snapdragon 801 cpu and running Cyanogenmod 13 (6.0.1 android) rom with unlocked bootloader and TWRP (3.0) recovery. ROM has security patch level December ...
0
votes
2answers
427 views

Full Disk Encryption on Google Pixel XL vs Google Nexus 6P

I am wondering if I have the same full disk encryption with a Google Pixel XL as I did with the Google Nexus 6P. On the Google Nexus 6P it would not load anything before being prompted for a password,...
1
vote
0answers
414 views

Smart Lock, and multi-factor authentication?

I am using Marshmallow, and I use the built-in encryption mechanism. Typing my password every time the screen locks is a pain. I would like to leverage Smart Lock to have the following ideal ...
1
vote
1answer
4k views

Decrypt android device (CM13/6.0)

I encrypted my device on a lark, but it affected performance too much. I want to decrypt my device, but the place where I could previously initiate the encryption now just show "encrypted". I tried a ...
1
vote
1answer
417 views

Formatting a Corrupted microSD

Received a 128gb Samsung Evo+ microSD card that had originally been encrypted or used as adopted storage on another android device. Current partitions, gpt table /dev/mmcblk0p1 android_meta 16.00 ...
1
vote
1answer
4k views

What is Direct Boot or File Encryption in Android N

The title says it all What is it and how does it help users? While this is a self answered question, additional inputs especially from hands on experience are welcome
1
vote
0answers
403 views

Decryption unsuccessful after enabling a PIN lock when full disk encryption is already activated

I have a Moto G3 with full disk-encryption enabled when I created a PIN lock and after that when my phone was restarted I got the decryption unsuccessful message and I couldn't boot it anymore. I ...
4
votes
1answer
1k views

How does Nougat encryption work technically?

I found the explanation for Android M, how does it work now in Android N? Bonus question: is it right to say that the encryption in N is weaker than the one in M? Because the OS can now be started up ...
12
votes
2answers
17k views

Is it possible to mount on a PC an SD card that has been encrypted by an Android Marshmallow device?

I have a Samsung Galaxy S5 duos with stock Android Marshmallow, and I'm considering encrypting my SD card to prevent access to its contents in case I lose my phone. The main reason of not doing this ...
3
votes
2answers
112 views

If I rarely turn off my phone, are there any benefits to encryption still?

If it becomes the case that my phone is stolen, I would like to make it as difficult as possible, if not impossible, for my data to be accessed without my permission. I understand that Android has ...
3
votes
1answer
5k views

How to resize the /data F2FS partition

Context: I wiped all the partitions from my Moto G device with the TWRP recovery and installed Cyanogen 13 on it. Then I had issues when enabling Encryption: the phone just restarts but does not ...
3
votes
0answers
334 views

Encryption key of android

Is it ever possible to get a backup of my Android smartphone's decryption key (I have my /data partition encrypted) in case something goes wrong? My phone is rooted. I have Galaxy Note 4 SM-N910C.
1
vote
0answers
274 views

Reasons for full disk encryption differences between Nexus & Samsung

I have Nexus 7 and Samsung Note 4. I'm guessing that they are representative of Nexus and Samsung Android devices, respectively. Regarding full disk encryption, Nexus full disk encryption is ...
1
vote
2answers
4k views

Cryptfs : unmounting /data failed: Device or resource busy

I am trying to encrypt my rooted Nexus 5 (running CyanogenMod 13/Marshmallow). Here is how I am doing: With the phone running and connected to USB, make sure that /mnt/asec/ is empty Long-press the ...
6
votes
0answers
121 views

Android 5.0 FDE stopped asking for password during boot

The settings still says encrypted, but it no longer asks for passwod during boot. Lockscreen password is still there. How did this happen (bypassing encryption)? Google search indicated this is not ...
0
votes
1answer
368 views

Online Nandroid Backup and later restore of an encrypted Android L 5.1 device

I am using an Android One phone with rooted Android 5.1 and the Online Nandroid Backup application to do live (o)nandroid backups. I am also using the built-in encryption, which encrypts the /data ...
16
votes
2answers
707 views

Canonical explanation of Android Encryption and Vulnerabilities

Note: Well, the bounty expired and one possible reason could be effort required to address as I gather from comments. Seeing the number of upvotes, it appears to be of interest to others as well. I ...
3
votes
1answer
621 views

Missing encryption

I have recently bought an Android smartphone (Doogee X5) with Android 5.1. But I'm having difficulty locating full disk encryption option. There is nothing in security and storage menus. The closest ...
0
votes
1answer
379 views

CM12.1 on Galaxy S5 in endless boot after encryption enabled, then pattern changed

As written in the title, I have a Galaxy S5 (SM-G900F) with CyanogenMod 12.1 installed ("klte"). Everything worked semifine (apart from occasional reboots), and after a while I decided to encrypt the ...
14
votes
1answer
20k views

How does Marshmallow encryption work technically?

I just installed Marshmallow on a Nexus 5 through a pushed update. I am confused about the way encryption works. I have good technical knowledge of encryption on computers. I would like to gain ...