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Questions tagged [encryption]

Encryption is the process of transforming information to make it unreadable to anyone except those possessing special knowledge.

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Encrypted Storage when booting to LineageOS?

I'm attempting to flash LineageOS 16 to my Moto G(5S) Plus. I found an unofficial rom online and it appears to be installing just fine. However, when booting for the first time, the phone displays the ...
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25 views

Samsung Galaxy s10e requires password every few days, is it possible to disable safely?

Galaxy s10e, protected by a very long password and fingerprints. I specifically went for a very long password intending to only type it in after restarting the phone. In fact, the phone requires ...
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23 views

Install TWRP on encrypted device

I would like to install TWRP on an encrypted device to make a backup and maybe reinstall firmware. (Samsung SMT-530) The reason I wanna do this is because when restarting, I am able to enter password ...
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43 views

Does encrypting an Android phone also encrypt old, deleted files?

I'm going to be selling my phone soon. The advice seems to be to encrypt it then performs a Factory Reset. But does the ​​whole ​​internal memory get encrypted, or just the current, visible files? If ...
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1answer
60 views

Encryption Unsuccessful even after system backup restore

The steps I performed: Flashed TWRP with Odin Made backup Flashed LineageOS 14.1 with TWRP Flashed SuperSU with TWRP Flashed Open GApps with TWRP There was a problem, Google Play Services kept ...
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1answer
55 views

Is the Samsung Galaxy S9 encrypted by default or can it be encrypted?

Basically, I travel a lot with my phone and having it encrypted would be very useful in knowing that a crook wouldn't be able to gain access to my data should my phone be stolen. I heard from one ...
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60 views

Decrypt userdata files using device and complete filesystem dump

My Oneplus 5 got softbricked (touch input completely stopped working some time after an update and nothing could be done about it). This happened soon (a couple of weeks) after it was updated to ...
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SD card not encrypted

I have an android device lg v30 and recently I purchased an sdcard for it. Naturally, I enabled encryption on the sd card (full encryption). Encryption completed successfully. I used the card for ...
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155 views

How to Decrypt Huawei Safe File?

I am using Huawei Nova 3i and I have forgotten my password for File Safebox. But here I can see all my files encrypted. It would be great if I can decrypt them so that I can get back all my files. ...
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2answers
297 views

TWRP decrypt password

TWRP 3.2.3 asks for a decrypt password at startup, which I never set. Ignoring with 'cancel' leads to the main menu, but then the internal storage is marked as 0 byte (e.g. when trying to backup), ...
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22 views

Which component of the Android protocol stack performs cellular encryption?

I understand that the SIM Card plays a significant role in generating keys for the encryption and decryption of cellular traffic, but are these keys passed to the Android architecture so that it can ...
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Android S8-MAX device encryption

I have an android s8-max device which appears to be running android version 8.1.0. In the security it doesnt give me an option to encrypt the device, as on power up i want to supply a password before ...
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65 views

Tell TWRP to decrypt for ota

Old versions of TWRP would prompt for the password to decrypt the phone prior to performing an ota, however new versions are able to apply otas without requiring decryption. This is great in practise ...
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1answer
60 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 ...
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188 views

Unable to Decrypt SD Card after reboot my Samsung s7 Edge?

I moved my important files in Encrypted SD card from my Phone & removed SD card for reboot the phone. After complete the reboot i am unable to find my files in encrypted SD card. When i put my SD ...
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56 views

How to access an encrypted external SD card with all apps?

I have encrypted both the device and the external SD card of a previously unencrypted Samsung phone running Android 6.0.1. After encrypting the SD card, apparently some apps can not access the files ...
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38 views

Running an Android app in an encrypted container

Is there a way to encrypt apps (and appdata) on an Android device. I use an Android 7.1 device and don't want that there is any APP or especially Malware which can spy on appdata like my WhatsApp data....
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1answer
48 views

Android Encryption Key in windows manual backup

I did a factory reset and then realized that I didn't decrypt my SD Card. I know that the data is probably lost, but I made a complete copy of the Internal Storage connecting the Samsung J5 mobile to ...
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1answer
448 views

Huawei File Safe Stuck/not working

I have created a safe on the SD using the files app on my Huawei P20 Lite. It worked fine, until I decided to create a second one. Now, it no longer asks for my fingerprint, but for my password. After ...
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1answer
147 views

How to restore an encrypted SD card backup after factory reset?

I did a factory reset and then realized that I didn't decrypt my SD Card. I know that the data is probably lost, but I did make a complete copy of the Internal Storage. Is there a way to copy back ...
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2answers
130 views

Make a “adb shell” batch file?

Is a way I can make a batch file that'll run "adb shell twrp decrypt 0000" and go all the way to 9999?
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0answers
122 views

Connection between PIN/password and encryption keys in Android

I am trying to piece together some information about the security system in Android. Particularly about how user's password/PIN is connected with encryption keys in file-based encryption mode. I'm ...
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280 views

How to read (or restore) files on encrypted SD card after update to Android Oreo?

My situation I have been using the encryption of my Android phone’s external SD Card on a Samsung Galaxy J3 (2017) Duos (SM-J330F) ever since I got it. I have recently updated my OS to Android 8.0 (...
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230 views

What kind of encryption is required for LineageOS on Xiaomi Redmi Note 5 (whyred) to boot?

Having my Redmi Note 5 stuck at the LineageOS logo, I tried different ROMs like Resurrection Remix OS. They work well. After some reserach, I found a hint to some kind of encryption in the LineageOS ...
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48 views

My android isn't recognizing the password to “use the encrypted device memory.”

I've been through a number of steps attempting to save my device data. I previously asked this question. Is it possible to save an encrypted data partition so that I can decrypt it later? I couldn't ...
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58 views

Is it possible to save an encrypted data partition so that I can decrypt it later?

I have a rooted samsung galaxy s4 sph l720 with an encrypted data partition. It's currently a soft brick. I'm confident I could wipe the device and start over from scratch but then I'd lose everything ...
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61 views

HTC one m8 data corrupted

I noticed many people have this exact same problem but no one ever said if they got through with it. My phone managed to encrypt itself, i went to get my charging port repaired and when the phone was ...
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36 views

How can I use the fingerprint sensor on my unencrypted phone?

Searching for the cause of decreased screen-on time after updating the firmware on my phone (the standby time is generally excellent), I realised it was not encrypted before, and as I had to change ...
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0answers
2k views

How to fix bootloop or decrypt /data in TWRP?

I am trying to recover the data from a default/factory encrypted Samsung Galaxy S7 Edge stuck in a bootloop (i.e.: restarting endlessly when booting the system). It is using the stock rom. Only the ...
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247 views

Decrypting Android Nougat adopted storage

I changed my phone from a LineageOS (Android: 7.1.2 - LineageOS: 14.1-20180704-NIGHTLY-FP2) to regular Android and used my SD-Card on the first start-up of the new phone. The new phone (Huawei Mate 10 ...
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0answers
149 views

Can a Whatsapp account be spoofed?

I've had a big privacy concern lately regarding the safety of my Whatsapp account. Ever since my phone was stolen from me and returned by certain malicious individuals, I've had the weirdest feeling ...
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1answer
240 views

Device encryption fails, gives no error and just restarts

Got a redmi note 5 pro, some time ago and I have been fiddling with it. I tried to encrypt the device when it ran Resurrection Remix OS, for some reason, it appears to be working and then less than 30 ...
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36 views

Removing Encryption from Android Backup

I made a backup of my android using twrp recovery, at that time I had setup PIN as password in the device. After that, i installed some other custom OS, but later thought of switching to it, ...
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1answer
417 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 ...
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277 views

`Decryption Unsuccessful` when trying to restore user data

After an update I either forgot my log-in pattern, or the update broke it. I tried numerous versions of what I remembered my pattern to be, but I exceeded the maximum number of allowed tries, and the ...
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1answer
2k views

How to fix “Encryption unsuccessful” and bootloop issue on Andriod 8.1?

My Nexus 6p boot looped and is showing "Encryption unsuccessful" error with a RESET PHONE button. Resetting the phone is not helping and it shows the same "Encryption unsuccessful" error again. ...
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347 views

Resurrection Remix is stuck at the encryption screen

I have a Motorola Moto G4 Play phone. I flashed Resurrection Remix 6.1 official build (based on Oreo) and TWRP 3.2.1. Then, I installed Magisk and allowed the root for apps (inc. terminal emulator) ...
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93 views

How APK with fake password protected works

I came across an Android application which runs normally on the device but raised an error when I tried to unzip its APK - it requires me to provide the password in order to decompress the APK file. ...
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186 views

My HTC phone wont let me put password in to decrypt phone - no keyboard

Keyboard does not come up to put code in. Anyone know what to do?
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1answer
285 views

File-based encryption security and backup/restore considerations

I'm evaluating making the move to file-based encryption on my device, but am having trouble finding satisfying answers to the following questions: Apps can place data in either a Credential Encrypted ...
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56 views

How to enable back decrypt button on Nougat+ on adb?

I tried on Samsung phone but there no choose like that special when you by new phone its encrypted by default, also I tried to root my Android Nougat without wipe /data wish encrypted no luck it show ...
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1answer
905 views

How to encrypt SD card on Nokia 6.1?

Is there any way to encrypt the SD card on Nokia 6.1? I didn't find any option to do it. (The current Android version is Android One 8.1.0) Product page: Nokia 6.1
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50 views

Encrypt phone remotely

I need to mass-encrypt the whole SDCard in some Android smartphones through a tcp/ip connection. While I'm fairly new to Android scripting I was wondering whether it is possibile to execute the ...
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34 views

Secure device while giving for service

I want to give my mobile device for servicing. The service personnel asked me for the pin code. I have lot of personal data in my device I don't want to leave it open for them. Is there a way I can ...
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0answers
268 views

Mount encrypted emulated avd userdata-qemu.img.qcow2

I'm trying to make a backup of my AVD. To speed things up, I like to make incremental backups. Backing up the *.img.qcow2 file(s) is inefficient. I'd like to be able to mount the filesystem that ...
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1answer
745 views

Setting/finding Android 7 encryption password

With some hassle I updated the 2016 firmware on my Lenovo P2 to Android 7 (I think my carrier decided that their own app was more important than security updates). Now that I wanted to put the TWRP ...
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1answer
68 views

Is Google Photos synchronisation secure on public wifi

Can someone (owner of public nw or intruder) perform man in the middle attack and steal the photos while they are getting synced over public wifi? Assuming they don't have any control on my cell phone,...
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1answer
817 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?
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1answer
342 views

Unable to recover SD card used as internal memory after factory reset

I have Motorolla G3 Android 6.0 phone. I am using 32 gb SD card as internal storage. After removing my 32gb card I did factory reset, now after factory reset my device doesn't recognize my SD card its ...
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87 views

How do Google and Samsung's “find my device” service can bypass Android's Secured Lock Screen ?

As I know, when the phone is locked that means it has been encrypted. So how do Google and Samsung's "find my device" service can bypass Android's Secured Lock Screen (https://android.gadgethacks.com/...