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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Samsung's note-taking app encryption algorithms

Does anyone know what's the encryption algorithm used in Samsung's Android note-taking app?
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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 ...
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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 ...
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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 ...
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Encrytion state of an android device before and after factory reset

My doubt is, I have an android device which is encrypted (Android Lollipop 5.1 ) , let's assume i had factory reset the device and what's the state of encyption now ? should i manually encrypt the ...
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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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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 ...
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File based encryption question

So in full disk encryption, the encryption key is lost on factory reset making it so the data is unrecoverable without the encryption key. What about file based encryption on newer devices? Does a ...
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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 ...
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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 ...
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Copy Galaxy S4 encrypted storage to computer

My dad passed this summer, he had a galaxy S4 which probably holds many photos I'd like to recover. I tried many passwords to unlock the phone but now it says that if I try two more times it'll erase ...
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Encrypted device doesn't ask for credential on boot anymore on Android 11

I use Android 11 (LineageOS) and recently noticed, that my phone stopped asking me for a decryption password when booting up, so I tried verifying that my data is still actually encrypted. Settings ...
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Wiping an Android phone > Should I delete accounts before encrypting or after?

I am wiping an HTC One M8 with Android 6. Currently no encryption in place. Should accounts such as Google etc be deleted BEFORE encrypting or AFTER? When I go to remove them I get a message warning ...
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SD Card Decryption on Samsung Galaxy M30

I encrypted the SD card in my Samsung M30 and then I factory restored the device. Now I can't access my files on the SD card. Can I recover the data that I stored on it? Are there any tools that can ...
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How to factory reset when /data cannot be mounted?

My phone shows "Encryption unsuccessful" message after trying to open and the "Factory reset" button below it does nothing. I tried to boot into recovery mode (Power + Volume Up + ...
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How might I back up, copy, export, etc. Pale Moon bookmarks on encrypted HD without using PM Sync?

I'm pretty sure my phone has a virus. I DLed a copy of Bejeweled 2 last November and ran it on VirusTotal (old browsers) and one service flagged it with a Trojan, IIRC, so I never installed it, but ...
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How could an Android device lose its key for the SD-card?

I am right now trying to debug a Lenovo P11 tablet that basically seems to have lost access to its SD card: 11-08 21:24:31.742 592 592 I vold : Mounting emulated fuse volume 11-08 21:24:31.744 ...
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Multiple encryption passwords (also different from screen lock password) with file-based encryption

QUESTIONS How can you set different passwords for file-based encryption of different files in an Android version that allows file-based encryption? As a corollary,* how can you set a file-based ...
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Recovering forgotten lock

I have forgotten a 3x3 pattern lock on my phone, luckily I do have TWRP. Is there an easy way to brute-force it, then? I'm willing to wait a while if that's what it takes. The reason I ask is because ...
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I can enter recovery but not sideload, and fastboot does not recognize the device

I have a shieldtablet which was working fine, until I decided to encrypt the drive. The process completed, the device rebooted, and it's stuck in a reboot loop. Neither Linux/Windows recognize it when ...
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Why can I view files from "Internal Storage" WITHOUT entering password either in OrangeFox recovery or via USB cable on PC?

I was under impression that all user files are encrypted by default in Android using FDE. It was to my surprise that I can just run, for example, OrangeFox recovery and when it asks me for a password ...
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Is the data on flash memory encrypted or unencrypted?

I understand there was full disk encryption from Android 5.5 to 9. Not sure it was ever the default, and not sure what the default is now. I've bricked a Pixel 3 running Android 11, and I want to know ...
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Why does encryption doesn't work/apply to access device storage or Google photos or drive when we upload a file from device/cloud to any webpage/apps

Example : YouTube, Facebook, Instagram, Chrome ( any app ) If I'm accessing YouTube or any other app where I can upload content from Android device with or without the app lock features, whenever I ...
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Is date safe in encrypted phone without passcode

If my phone does not have a passcode, but is encrypted by default, and I factory reset it, is my data safe? Or is there a way someone can decrypt it since it had no passcode
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Possible to have different passwords for device encryption and screen lock?

I'd like my device encryption password to be very long and complicated but a short screen lock password for convenience. Is this possible?
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Password-Protected Notes Encryption

I have one question about the encryption algorithm used for password-protected notes. I am an Android smartphone user and for taking notes, I use my phone's native Samsung's note taking App. But, I ...
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Possible to perform data recovery with dead cpu? (LG G6 - Android 9)

I've got a dead LG G6, suddenly freeze during normal using. After force rebooting, it was completely dead even though connecting to charging cable. Have already performed cpu chip-off and reballing, ...
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Unable to mount fastboot boot twrp.img backup unable to mount storage?

I was trying to load fastboot boot twrp.img and take backup of stock rom system.img userdata.img through twrp recovery... it loaded successfully but while taking backup its not able to take backup ...
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Reset failed decrypts counter Android 10

I have a locked phone (forgotten PIN). And due to many incorrect attempts, the gatekeeper timeout or cooldown period is stuck at 480s. Is there any way to reset this failed decrypts counter, so that ...
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How to add strong encryption to an SD card so that I can access it both on my desktop and phone using open source non tracking offline tools?

The question says it all. So far I was able to find out Default android encrypted SD card can only be read by the phone or by a skilled hacker or their non open source tools There are tools that are ...
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4 votes
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Recovering data from Android 10 (forgotten PIN)

Long story short: I have forgotten the PIN to my Android device, as it wasn't being used for a while. Steps that I have tried/am trying/planning to try: Brute forcing - I have been trying to brute ...
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How to decrypt android adopted storage without the key?

I would like to know if there is any possible workaround for decrypting the adapted storage. I don't care about recovering my data because I've got the backup already. I tried formatting the sd card ...
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Does `adb push` put files in the DE (Device Encrypted) or CE (Credential Encrypted) storage?

Does the use of adb push put files in Android's DE (Device Encrypted) or CE (Credential Encrypted) storage area? According to the FBE (File-Based Encryption) documentation On an FBE-enabled device, ...
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How to disable Direct Boot Mode in Android 10 (Device Encrypted, Credential Encryption)?

I want to disable Direct Boot mode on my Android-10-based tablet so that no apps can start on-boot until after I enter my decryption password. Background: As of Android 7, FBE (File-Based Encryption) ...
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2 votes
1 answer
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How to get a list of all apps that start in Direct Boot Mode (Device Encrypted, not Credential Encryption)?

I want get a complete list including all apps (including system apps) that are running in Direct Boot Mode, therefore they necessarily store their data in the DE (Device Encrypted) area (as opposed to ...
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Does GrapheneOS's Android 10-based releases use FDE (Full Disk Encryption)?

According to the ASOP documentation, it is no longer possible to use FDE and the user is forced to use File-Based Encryption Note: Devices running Android 7.0–9 support full-disk encryption. New ...
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How to use FDE in Android 10 (Full Disk Encryption)

How can I setup Full Disk Encryption in Android 10? According to the ASOP documentation, it is no longer possible to use FDE and the user is forced to use File-Based Encryption Note: Devices running ...
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How to set distinct boot and lockscreen passwords in Android 10 (full disk encryption)

How can I set a distinct password for: The Full Disk Encryption password (used to boot the device) The Lock Screen password (used to unlock the device) For security reasons, I use a 25-50 character ...
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The default Full Disk Encryption feature (known as Secure Startup on Samsung phones) is not working for me

In the past, with older Samsung devices, whenever I have enabled Secure Startup to fully encrypt a device, I have gotten an instruction to charge it to at least 80% and leave it plugged in, as it ...
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Why isn't the unlock pattern working anymore?

A few days ago my unlock pattern was not recognized anymore. I'm guessing the cause is memory corruption or some bug. I haven't restarted the device yet, hoping to "find" the new pattern or ...
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Backup and restore file-based encryption keys

Android File-Based Encryption is implemented via fscrypt. How do you backup and restore fscrypt encryption keys? Both the master keys and the per-file keys would need to be backed up.
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If a phone is encrypted (Android 5.1) but user doesn't use a screen lock, and then does factory reset, is data secure?

If I have a phone running Android 5.1 and it is encrypted, but I don't use a lock/PIN for unlocking and using the phone, does that mean if if I do a factory reset, the data on the phone can still be ...
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How to resolve an encryption issue?

I used a lockscreen to encrypt my phone and accidentally messed up the system and TWRP. I've since formatted it and am using it normally, albeit without root this time lol. But, just in case, I made a ...
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Terrible SD card performance after enabling encryption

Device: Samsung Tab A7 2020 - purchased less than 1 week ago OS: Android 11, April 2021 patch Files used to test: three zip files totalling 613 MB Micro SD cards which have been tested: Unbranded 256 ...
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What method does Monospace use for encryption?

This application has the ability to encrypt. What method does Monospace use for encryption?
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Android SD card encryption

I was looking at some encryption standards and was wondering, what kind of encryption algorithm does Android's SD card encryption use? Is it AES 128 or a different algorithm?
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