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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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No encryption on Samsung Xcover 7

On the Android smartphones I have used so far (e.g. devices from Sony, Motorola, Google or Nokia), there was always an option somewhere in the settings that allowed the smartphone to be encrypted. As ...
Simon's user avatar
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1 answer
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How safe is factory reset if I didn't have a pin or password?

Some months ago I had to return a phone to the store and all I did was factory reset to erase everything (I did it two times too). Now I'm getting paranoid about how safe my information is and if it's ...
Hola ktal's user avatar
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53 views

In fastboot mode my phone appear locked

My phone is Huawei mate 8 when i try to install a twrp is appear locked in fastboot mode & i cant unlock oem. I cant acces to my data. Any one have an idea about recovery data from fastboot mode. ...
Mondher Kassaoui's user avatar
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59 views

Android 13 configuration stops on picking screen lock

tl;dr My phone has become "bricked". After wiping all the data it regain normal functionality, but I cannot complete Android initial configuration due to phone stopping on selection of a ...
trejder's user avatar
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Recovering Whatsapp crypt8 file

I would like to re-read some old whatsapp chats that are in a .crypt8 file; I have put the database in my new phone after reinstalling the app and so on (I was already able to use this procedure for ...
Dext3er's user avatar
1 vote
0 answers
533 views

TWRP fails to mount data partition with error, says Invalid argument

I have a Fairphone 4 with /e/OS that I accidentally left a long download running overnight until the storage filled up. The phone also ran out of battery during this, and now it won't boot. The ...
StaticallyTypedRice's user avatar
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0 answers
92 views

Force enable encryption for portable SD card

There should be an option to encrypt SD card (formatted as portable) in the settings, but some manufacturers disable it while some (e.g. Samsung) have it enabled. If that is a built-in Android feature ...
CluelessNoob's user avatar
2 votes
1 answer
917 views

How can I access my phone with a broken screen when TWRP decryption is unavailable?

Recently I broke the screen and digitizer of my phone and now want to be able to get my data off or even control it. While researching I stumbled upon scrcpy which gives you full access to your device ...
Kippi's user avatar
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0 answers
3k views

"Your encrypted data is locked on this device" error message

The question is simple, I just want to know what does below message means? Your encrypted data is locked on this device For security, you can no longer access your encrypted data on this device. Try ...
Paul Ixas's user avatar
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0 answers
37 views

S9 died black screen cell gone but I need to decrypt my SD card- Help!

My S9 black screen death, now GONE. TMobile replaced now I have a Moto G5 android. It does see the files but does not open. I have encrypted my SD card not aware I had to decrypt from my S9 but now I ...
2M PWR's user avatar
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How to copy screen lock password from one device to another in Android11?

So I'm trying on copying the Android 11 screen lock password to another same device our customer does not want to set the password one by one and I find out a resolution: copying files However it ...
jason yu's user avatar
2 votes
1 answer
128 views

With magisk, how to bypass boot-time password input?

I have an phone with magisk and termux installed, and now functions as a mini server at home. Whenever I need to reboot the phone, I need to manually unlock the phone with GUI to get termux running, ...
ccaapton's user avatar
2 votes
0 answers
435 views

How do you decrypt EncryptedSharedPreferences on a rooted emulator

I'm trying to put together a PoC to show that a root user can decrypt any app data that relies on the keystore. On a rooted emulator, I installed an app that uses EncryptedSharedPreferences. I can see ...
catanman's user avatar
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1 vote
1 answer
431 views

Disable Encryption without wiping data in Custom Rom

Does it possible to disable encryption in Android10+ without wiping data partition to access personal data? (unlocked bootloader) In other words, Can I trust custom roms to protect my data?
a farahabadi's user avatar
2 votes
0 answers
227 views

Andriod encryption/decryption

My Android phone is dead, but I want to recover my data. I removed eMMC using chip-off and acquired the image/dump file (userdata.bin) using Easy JTAG. The phone had Andriod 9, which uses Full Disk ...
Sarfraz Shaikh's user avatar
1 vote
1 answer
177 views

Can my employer read my notes if I use their Wifi?

I have "Colornote" app in my android device and I'm using that app for many years. I write my passwords and many other personal things. My workplace has wifi and I use it regularly. Often my ...
ramanujan's user avatar
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How to regain lost access to encrypted data, known lock pattern

My S10e is running LineageOS 19.1, rooted with Lygisk. After one specific reboot after changing the SIM card, it entered a boot loop where it showed the Lineage boot animation for a few minutes, then ...
nopopem's user avatar
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3 votes
1 answer
3k views

Is Samsung Knox really that great and how can I achieve near-Knox level security on a rooted device?

When I first started learning about installing custom ROMs like LineageOS, it wasn't long before I was made aware of the security implications involved, particularly with unlocking the bootloader. The ...
FOSS Guru's user avatar
1 vote
0 answers
418 views

Final steps to repair corrupted F2FS SD Card - How to fix "can't read superblock"

[I modified the question to reflect the progress] The TLDR version is, the card is adopted storage that says corrupted f2fs. I used the process detailed Here but when I tried to mount the decrypted SD ...
Captain-Science's user avatar
1 vote
1 answer
1k views

Finding Decryption Key and how to use it to decrypt

Nokia 6.1+ device using pixel experience ROM based on Android 12. Adopted SD card as internal storage and removed it without 'Eject'. Afterwards couldn't read the data even on the device itself. ...
Abhishek Rawat's user avatar
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0 answers
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SD card Adopted as Internal storage [duplicate]

Using Pixel experience Rom based on Android 12 on Nokia 6.1+. Mistakenly adopted SD card as internal storage and while the files/data was being transferred from phone to Sd card/ shared internal ...
Abhishek Rawat's user avatar
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0 answers
256 views

Do apps like iMyFone LockWiper actually work?

I recently had my phone stolen and would like to know if I should change all my debit cards and other sensitive info. I want to know if is it possible to actually bypass the default lock screen and ...
ng.newbie's user avatar
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1 vote
1 answer
305 views

Is my data secure after factory reset with NO password SET

I had one plus 8 pro brand new phone Android 10. I sold the phone in a week's time. I never set any password or screen lock. I understand android 10 uses file-based encryption. I just did a factory ...
Dave's user avatar
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0 votes
0 answers
178 views

Is FBE + Metadata Encryption secure if pin/password not set

My device is based on Android 11 and does not have a security lock screen. By default it has FBE and Metadata encryption enabled. How secure this encryption is without setting the Pin/password. How is ...
Lavyansi's user avatar
2 votes
1 answer
644 views

Can any data be recovered without a password/PIN?

If someone doesn't know the password required on boot, is there a way to access the data on the device? It should be encrypted, but I read about Samsung adding something called Maintenance Mode where ...
TimSim's user avatar
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2 votes
0 answers
292 views

Decrypt data in recovery after bootloop

I’ve made a little mistake. This year, I’ve installed LineageOS for MicroG on my Fairphone3. It provides OTA updates but with the last one, it is said I must follow the official instructions on ...
Pierre Angot's user avatar
0 votes
1 answer
500 views

How does Android generate FBE Keys

I am trying to understand how FBE and metadata encryption works. I read a lot of pages on FBE that it encrypts each file with different keys, and that those keys are encrypted and hashed with the Lock ...
Lavyansi's user avatar
1 vote
0 answers
80 views

How to secure files in SD card by using adoptable storage?

I asked this question before, and this is a follow-up. I am trying to encrypt my SD card for data security (I don't want some random guy to be able to access my photos/documents/downloads by just ...
CluelessNoob's user avatar
0 votes
0 answers
2k views

Can I use an ecrypted flash drive on Android?

Is it possible to use a flash drive encrypted with LUKS and connected to the phone with an USB OTG cable?
Qwerty-uiop's user avatar
1 vote
0 answers
703 views

TPM (Trusted Platform Module) vs. TEE (Trusted Execution Environment) - can credentials be *stored* on both?

TPM is physically isolated from the rest of the system (i.e. it is a standalone chip on the mainboard), while TEE is a secure area of the main CPU. The key function of both TPM and TEE is to do ...
Shakalakah's user avatar
1 vote
0 answers
240 views

FBE securely wipe all data

According to android documentation the FBE system has two different levels. Credential Encrypted (CE) storage and Device Encrypted (DE) storage. Does a factory reset of an FBE phone reset the keys of ...
sbump3's user avatar
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0 votes
0 answers
288 views

Encrypt files using Android shell tools

I want to encrypt and decrypt some files (symmetrically and asymmetrically) on the Android command line, including the one in the TWRP recovery. Is there a program which can do this? I've tried ...
Kippi's user avatar
  • 65
0 votes
0 answers
657 views

Cannot Mount userdata partition on Android 11

I have pulled a block of encrypted userdata partition ".img" and trying to mount it on unecnrypted device (same device with encryption set to off). My device is rooted. My userdata is ...
Lavyansi's user avatar
1 vote
0 answers
655 views

How to decrypt (FBE) file-based encryption Adoptable Storage Android 12 [duplicate]

I backed up encrypted data of adopted internal storage on my PC & then Formatted the SD card as portable storage. But I have not factory reset my android system so the key for decryption must be ...
Abhishek Rawat's user avatar
0 votes
0 answers
37 views

How to Read the Key from phone internal storage generated when formatted sd card as internal storage? [duplicate]

If I manage to get root access to my device, where to find and how to read the decryption Key? I selected sd card to be used as internal storage and removed it without Using 'Eject' , that too ...
Abhishek Rawat's user avatar
1 vote
0 answers
631 views

Encrypting an SD card so that it will also work on a new phone

I have a LG G8 running Android 10. Your basic, unrooted, stock ROM phone commercial phone. It has a 64GB SD card where I place most of my data. I want to know how I could achieve the following 2 goals ...
jerkstorecalled's user avatar
1 vote
0 answers
36 views

Samsung's note-taking app encryption algorithms

Does anyone know what's the encryption algorithm used in Samsung's Android note-taking app?
Vince's user avatar
  • 11
0 votes
1 answer
1k views

Is it possible to dump an Android partition with file-based encryption (FBE)?

Consider an unrooted Android 9.0 device with file-based encrypted (FBE), a locked bootloader and only recovery and download modes available. Is there any way to dump the internal storage either to the ...
srhslvmn's user avatar
  • 289
0 votes
1 answer
609 views

Does File-Based Encryption (FBE) in contrast to Full-Disk Encryption (FDE) allow deletion of individual encrypted files?

As far as I understand, Android 9.0 switched from Full-Disk Encryption (FDE) to File-Based Encryption (FBE), which means that encryption is done on a file-by-file basis by default. If Android no ...
srhslvmn's user avatar
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1 vote
0 answers
649 views

How to decrypt and mount Android devices?

In Linux, you can read data a device encrypted e.g. with LUKS by doing cryptsetup luksOpen and mounting the volume. What is the equivalent for this in Android, i.e. what specification for encryption ...
srhslvmn's user avatar
  • 289
2 votes
0 answers
191 views

Is it safe to store passwords in WhatsApp end-to-end encrypted backup?

So there is a WhatsApp group in which only I am present and hence I use the group to store my passwords by sending them in the group as chats. I then backup those chats using the WhatsApp end-to-end ...
Plan'k-44's user avatar
  • 141
1 vote
0 answers
155 views

Encryption and deleted data

I have a galaxy S8 using "default password" meaning no startup password or secure start up. The device is still encrypted by default so all data should not be recoverable after a factory ...
Question's user avatar
1 vote
0 answers
1k views

Recover deleted file on phone using FBE

Suppose we have a phone that: Runs Android 10. Uses file-based encryption. Suppose one of the files is deleted, but the phone is immediately turned off so as to prevent the deleted file from being ...
Melab's user avatar
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0 votes
0 answers
898 views

Manually decrypt data from recovery-mode?

AFAICT, Android builds upon Linux' standard fscrypt as implemented in ext4 and f2fs. I know my pattern and have access to a shell with any Linux program in it. How can I decrypt /data manually, ...
Atemu's user avatar
  • 560
2 votes
1 answer
949 views

How to back up encrypted /data atomically in Android 12?

I accidentally upgraded my phone to Android 12 instead of a newer Android 11 and, to my dismay, it seems encryption was changed in a way that makes TWRP unable to decrypt my /data. For backups, I ran ...
Atemu's user avatar
  • 560
2 votes
0 answers
98 views

Does Android Lolipop 5.1 get encrypted by itself upon first boot?

My doubts are, Would an android device shipped with Lollipop 5.0 get encrypted itself upon first boot? I saw a lot of blogs saying Lolipop does not come with default encryption but in the official ...
munna ss's user avatar
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1 vote
0 answers
108 views

How to recover encrypted files from sdcard from phone with broken screen?

So I have a few problems with my Galaxy S9+ phone: About a week ago, my old galaxy s9+ phone's screen started turning black right before the login screen. I can see the Samsung and verizon splash ...
swv's user avatar
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0 votes
0 answers
152 views

Are the Android app switcher/multitasking snapshots created when an app is sent to the background, encrypted?

This post here: https://android.stackexchange.com/a/218963/364009 outlines the snapshots location for the app switcher when an app is sent to the background, /data/system_ce/userid/snapshots, or at ...
AndroidUser558's user avatar
1 vote
0 answers
116 views

Question about FDE without secure start up and factory reset

So I read that on device launching with 7.0 , it has FDE by default and a 256 bit primary key is randomly generated at first booting the device (say after a factory reset). My question is, if no ...
Inquiry's user avatar
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1 vote
0 answers
285 views

How to decrypt a recovered password on Samsung S6?

I have rooted my Samsung S6 so that I could recover wifi passwords. But the app Wifi password Recovery find an encrypted password. Is it possible to find the original password? If so, how can I do to ...
Zen's user avatar
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