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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how does disabling 'password at startup' works before file-based encryption?

Android 6 (before file based encryption): after encrypting device and setting screen lock, i can choose an option 'require the PIN, password, or pattern at startup' or can i choose 'no thanks'. in ...
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Flashing recovery directly to EMMC to retrieve user data

I've got xiomi redmi 5 with stock rom and all settings. It doesn't boot. I tried many ways to fix it but all failed. It's not unlocked and doesn't have adb enabled so I couldn't get data from it. I ...
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Are there any downsides to encrypting an Android device?

Besides requiring a lock screen, are there any downsides to encrypting an Android device (using the native encryption)? For example: is there a performance decrease? is there a temperature increase? ...
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How to encrypt an SD card for android so that it can also be used on other devices?

When encrypting the SD card via Android's encryption it makes the SD card only usable on that device. However if that device gets lost or broken or if one would like to access the SD card from ...
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Access encrypted /data Partition over ADB and recovery (TWRP, LineageOS 16, Redmi Note 4)

I have a Redmi Note 4 (mido) Android phone with a broken screen: the screen lights up, but otherwise it stays entirely "black". I already replaced the screen, but with no luck - the cause of the error ...
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192 views

Decrypt Android 10 File Based Encryption (FBE) data

Device: Xiaomi Mi 9 ROM: [[ROM][10.0][Xiaomi Mi 9][UNOFFICIAL]Pixel Experience AOSP[2020/04/11], ROM for the Xiaomi Mi 9 Hi, I tried to upgrade my ROM from an older to a newer version with a clean ...
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Securely storing keyfiles with authentication and alike

I am using Keepass as my password manager. I am using a keyfile for securing access to my database. However when I want to do the same on my android phone I have to store the keyfile in my phone ...
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144 views

/data's data is garbled in TWRP. How to decrypt

So this is quite another android story but I promise to keep is as short n dry as poss. The issue was some of my Apps weren't able to access /extsd folders with non root & so I deicided to give ...
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107 views

No full disk encryption in Samsung Galaxy A71

I just started using my brand new Samsung Galaxy A71 (Android version 10) by doing an initial setup, and it seems it does not support full disk encryption at all. On the contrary, on Samsung Galaxy A7 ...
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Encrypted data still on phone after stock ROM flash. How to decrypt it?

I find myself in a weird situation. My phone (Mi 9T Pro, Android 10) entered a boot-loop after updating MiUI and reinstalling TWRP. I tried installing TWRP again, but then it refused to decrypt the ...
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Is it possible to crack the password.key or any other .key file from /data/system/?

I am a newbie... So this question came in my mind when I removed my screen lock using adb by deleting the .key file from the /data/system/ folder.... For removing we delete the .key file, but what if ...
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Going crazy, please help => Trying to read whatsapp crypt7 file from old Xperia LT15 phone

I'm trying to retrieve some old messages of someone dear to me, from an old phone of mine from 2011/2012, a Sony Xperia LT15i. But it's driving me bat shit crazy. The whatsapp on the phone is linked ...
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398 views

Android 9 pie see if device is encrypted

I am trying to figure out if my Android (Pie) is encrypted. Per Is there a way for a user to tell if their Android device is encrypted or not?, it says my phone will be reported as phone encrypted. ...
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copy encrypted internal storage to pc ( in twrp mode )

I have this situation where I had my internal storage encrypted and then by using twrp I formatted only my data( booted into twrp > advance wipe > selected data and Dalvic cache > swiped to wipe . I ...
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286 views

How to create filesystem in TWRP? Getting error: “Unable to format to remove encryption”

The screen appears after booting into TWRP and trying to format memory: I was trying to flash a custom ROM using TWRP recovery but it's showing Unable to mount storage & Failed to mount '/data' (...
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How to decrpytion from twrp

Firstly, I need to say my specific problem so that this question won't marked as duplicated. I've an android phone that has already root access and bootloader lock open. And recently I dropped it and ...
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125 views

Is it possible to encrypt system partition with custom rom?

I have galaxy s9 and i wanted to have lineageos rom. So i unlocked bootloader and wiped stock firmware of galaxy s9.And then i installed lineageos 15.1 with twrp 3.2.3-0 Then i encrypted phone. I ...
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Metronome sound for disk encryption password prompt

In the previous android version (Lollipop, Marshmallow, Nougat and may be Oreo) there was a metronome sound when the phone was waiting for disc encryption password: "To start Android, enter your ...
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Android 9 Pie says 'encrypted', but phone can receive calls after reboot (before entering screen lock password)?

I have a new Optus branded ZTE phone (Android 9 Pie). I added a screen lock password. Apparently it is now automatically encrypted - Settings / Security & location / Advanced / Encryption & ...
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162 views

Unable to encrypt my Note 5 anymore (data partition is corrupt)

It all started with a factory reset on the stock Samsung ROM (Android 7.0). After I booted into the factory reset system I couldn't get the phone encryption to work: it failed with the message saying ...
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RCS Messaging Encryption

With the launch of Google's RCS messaging protocol, is there any reason as to why it doesn't support end to end encryption, or is it a feature that they intend to implement at a later time?
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Decrypting Android with broken screen

I have a full disk encrypted (pattern) phone running Android 9 (not rooted), sadly the screen is shattered making it impossible to put in the pattern. I need to recover some important data from the ...
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How to unlock memory card on my android phone without me even setting a password for it?

I have a Huawei Y9 phone. Everything was normal until it asks me for a password for my memory card. I don't remember setting any password for it nor locking it. Is there any way for me to unlock it? I ...
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password lock code not accepted [duplicate]

The device cannot be opened and or unlocked upon restarting. The message on startup screen "enter password to decrypt this device". Except the password lock code is no longer accepted it says "try ...
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Long PIN to boot, short PIN to unlock

How do I set up shorter PIN for screen unlocking while keeping long PIN for device boot and filesystem encryption? Short PIN should support limited number of attempts, long PIN may be tried for ...
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Decrypting an SD Card after the phone is wipped?

I have a Samsung Galaxy with an encrypted SD card, but the phone got factory reset. Is there a way to decrypt it?
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Can a lost rooted/unlocked phone be decrypted by a thief?

Someone stole my One plus 7 Pro. It was rooted and had TWRP and Magisk 19.x ( latest subversion before 20.x dropped). I had a passcode and fingerprint set up on my phone. It was stolen at a technical ...
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368 views

How to recover stored wifi password?

My Android device (A Samsung Galaxy S7 SM-G930F, version 6.0.1) has different wi-fi networks saved. I would like to recover some of the password it has stored. Browsing through the web I searched ...
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How to encrypt my vivo Z1 pro android?

I want to use certain mail that can only be accessed after enabling device encryption, but I searched extensively and the only option for encryption are coming as encrypt a file/app.. Not the whole ...
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How to fix this hard brick (possibly caused by force encrypt on boot?)

A few days ago, I tried installing a MIUI 11 ROM for my K20, but forgot to flash a zip that disables force encryption so now I have a brick on my hands. I've tried fastboot format/erase userdata, ...
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Encrypted SD card data recovery with broken display (S9+)

my phone (Galaxy S9+) was recently stolen, and thankfully I got it back, but it was completely destroyed when I got it back. I'm not sure what they did to it (looks like they took a hammer to it), all ...
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Does “adb backup” also backup /data/misc/vold - the Encryption Key for Adoptable SD card?

I want to make sure that using adb backup -apk -shared -all -f ~/backup.ab will also save /data/misc/vold? I am trying to backup before rooting, in order to be able to gain access to the encryption ...
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Recovery chances for SD card - used as android internal memory - which got formatted by another mobile?

I used a micro SD card in a Nokia Smartphone for years as internal storage. I ejected it to test if another phone detects this type of SD card. Although we planned to just see if it is detected, ...
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58 views

Android KeyStore and root access

Are there system integrity checks performed internally by the KeyStore API when asking a key stored in a Trusted Execution Environment in hardware to perform crypto operations to detect signs of ...
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439 views

What is a “synthetic password” and how is it used by Android?

On a first-generation Pixel that is running Pie, in locksettings.db there is a field named sp-handle that contains a 64-bit value. sp is an abbreviation for "synthetic password". Under /data/system_de/...
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How to check if custom ROM supports encryption?

First solution which is coming to my mind is install custom ROM and encrypt /data partition. But it always take time. I'm wondering if there's quicker method like download custom ROM, extract system ...
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121 views

How to wipe and reinstall an encrypted device with 7.1.2 if TWRP won't boot anymore?

I installed an unofficial build of Resurrection Remix 7.1.2 on Meizu Pro 5 (M86) with TWRP 3.0.2. Out of curiosity I then enabled encryption with the thought that even if I don't like it and cannot ...
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Motorola G6 8.0 Android was encrypted by some kind of malware, what can I do to remove the encryption

Now my smartphone doesn't let me change the encryption password: Oh now the RAM is very high, before this the RAM was always at 30%: I have read in many places that it is a bad system update, that ...
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How exactly does FBE's key derivation work?

These are the files that I know go into verifying a user's password: /data/system/gatekeeper.password.key /data/system/gatekeeper.pattern.key /data/system/locksettings.db /data/system/locksettings.db-...
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567 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 ...
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Gallery Vault - Any exaplanation on how to Encrypt + hide the files within the vault and on the SD Card?

The gallery Vault app says their support SD card however no where can i find a tutorial on how to use it and i do not see anything in the app that is explaining this. Any one here that knows how to ...
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recovery of data on MMC protected internal memory device

I have a broken HTC Sensation with a forensics lab who are trying to recover the data from the phone's internal memory chip. The technician says he is unable to recover the data on the chip because ...
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1answer
315 views

OnePlus 6T Did “fastboot boot” just delete all my encrypted data?

Today after a successful(Booted, worked fine all day) OTA manual upgrade(downloaded latest zip and flashed) I decided to reinstall TWRP in order to reroot. However, after running first "fastboot flash ...
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Read adopted and encrypted SD card with external SD reader?

My Moto G5 sd reader doe not work anymore, and does not read the SD card that was adopted and encrypted. I want to access the sd card to save the data/pics etc. I thought that I could use an ...
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662 views

Cross-platform compatible encryption of SD-card for Android

How would I go about encrypting my brand new 256GB SD-card, which is meant for my Android phone, considering the following: Card should be usable across multiple Android devices, and other platforms (...
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How to fully encrypt an LG Stylo 2 MS550 phone?

I have an LG Stylo 2 MS550 running the stock Metro PCS Android 7. The bootloader is unlocked, and my phone is rooted. Also, I have TWRP flashed onto the recovery partition. I'd like to fully ...
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Android Phone won't accept my change of screen lock pin code (Encrypted phone & added NordVPN)

I am not locked out of my phone - it just doesn't accept my attempts to change the Pin #. I have Encrypted the phone and added NordVPN not sure if this is causing the issue. i think some has gotten ...
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188 views

Mount image of encrypted internal storage data partition from android P

When trying to upgrade to a newer rom, my system got a little messed up and I had to format my /data partition. I had made TitaniumBackup and twrp backups but they were on the encrypted data partition....
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286 views

Encryption/decrytion

LG V30+ US998U version Have struggled extensively to get AOSP running on my device. Would wipe data and reboot TWRP; flash DM-verity and no-encrypt also did not help prevent bootloop. But on to my ...
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Any way to make old alarm app use Direct Boot mode?

I'm trying to use an old app called AlarmPad, but it doesn't seem to work if the phone hasn't been unlocked after a reboot. However, I read that Android N and later support this feature ("Direct Boot"...

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