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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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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How to use the Decryption key for Adopted internal storage to unlock/read the encrypted data? [duplicate]

I have the backed up encypted data stored on my computer. And I have Root access to the Android device & am able to find the Vold folder in the Android system internal storage containing the ...
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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 ...
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How to decrypt (FBE) file-based encryption Adoptable Storage Android 12

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

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 ...
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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 ...
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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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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 ...
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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 ...
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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 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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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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