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Questions tagged [encryption]

the process of converting information using an algorithm (or cipher) to render the information unreadable to anyone who doesn't have the algorithm (also known as a key)

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BitLocker on Bootcamp Windows 7, 13" Macbook Air 2011?

How can I enable BitLocker under Bootcamp Windows 7 on Macbook Air 2011? Is it even possible at all? Following this answer to an earlier question, I tried to "copy the EFI binaries" with ...
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3 votes
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Is it possible to mount an encrypted disk image so that only current user is able to access it?

I use VeraCrypt to mount an encrypted volume. When the volume is mounted, other admin users are not able to access it: admin1 % admin1 % su - admin2 admin2 % ls /Users/admin1/veracrypt_mounted admin2 %...
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2017 Intel 4K iMac, broken FileVault decryption

macOS Monterey on a 2017 4k Intel iMac. A week ago I turned FileVault on by mistake, so after it finished encrypting the drive I went straight to decrypt it. Then I assume that near the end of the ...
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Manually Decrypt Partially Cloned APFS Volume

I recently attempted to clone a failing external drive to a new external drive. The clone failed part-way into the process. The original drive hardware has now fully failed, so I'm trying to recover ...
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Unable to use Apple Watch to unlock app and your Mac and unable to turn on FileVault

I have a new M1, first for some reason, nothin happen when I press "turn on FileVault" the button is not greyed out but nothing happen. when I try to enable "Use your Appel Watch to ...
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Can't enable FileVault with secure token

I set up a new Mac Mini M1 (macOS 12.3 / build 21E230). The main user is non-admin, and the admin is a hidden account. I can't enable FileVault. If I press the button, nothing happens. I tried to ...
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-1 votes
1 answer
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How does iPhone encryption work?

I am trying to figure out how iPhone encryption works on iPhone 7. From my understanding there are 2 scenarios: Encryption is active by default (even without a lock screen password) and the encryption ...
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3 votes
1 answer
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FileVault and erasing SSD: disk utility didn’t ask for any code or password to erase despite FileVault being on

I am trying to sell my MacBook Pro 2011 and want to erase the SSD for good. It’s running High Sierra. Despite what Apple says, I read it’s better to have FileVault turned on and then erase the machine....
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External encrypted drives

I'm using OS X 10 13 High Sierra and have an number of drives that I encrypted using Disk Utility when formatting them (none via TimeMachine). Couple of questions: I can't determine which are/aren't ...
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Is it possible to temporarily prevent a user account from logging in?

I'm trying to setup a system with individually encrypted user home folders, i.e- each user has their own encrypted volume containing their home folder. The problem is, if I login as a user when that ...
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With iOS, the Canary email client and OpenPGP, can we encrypt subject lines?

For quite some time, most PGP implementations did not support the encryption of subject lines. The situation has changed a bit in the last years, though. For example, the PGP implementation in current ...
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How to recover encrypted/locked volume on M1 Mac with recovery key, missing password?

I set up my new M1 Macbook Pro about 3 months ago and made a separate volume for safekeeping things inside. This volume shows up in Disk Utility, described as "APFS Volume, APFS (Encrypted)" ...
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I cloned my Mojave boot volume onto a separate volume, but lost encryption. Can I get it back?

In preparation for a long-delayed Mojave-to-Catalina update, I cloned my Mojave boot volume into a separate bootable volume (on the same hard drive, in the same container), using SuperDuper. But the ...
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How to enforce S/MIME encryption in Apple Mail

We've set up Apple Mail on our Macs with S/MIME encryption which works quite well. However, users are able to select or deselect encryption by clicking on the lock symbol when writing an email. ...
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Why is encrypted volume asking for password on first run only?

MacBook Pro running macOS Catalina. I have a “QuitAllApps.app” automation that quits all open apps, including an encrypted .DMG volume that is opened with different automation. After working great for ...
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Backup a Veracrypt encrypted external harddrive with time machine

I already searched a substantial amount of time but did not succeed yet. I used VeraCrypt to fully encrypt my external hard drive named Media which contains a lot of media files such as photos, videos ...
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Encrypting a flash drive using a Mac desktop with Sierra 10.12.6

Can someone please tell me what I am doing wrong. I want to format and encrypt a new SanDisk flash drive on my Mac that uses OS Sierra 10.12.6. This is what I have done: Opened Disk Utility and ...
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1 vote
2 answers
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Monterey not mounting encrypted volumes

I cannot get Monterey to decrypt volumes at boot on my M1 MacBook Pro. I have this working on another Mac running Catalina where I'm using BootUnlock. I initially installed it directly from the ...
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Need help running 'backup_tool.py' Python script to decrypt my iPhone backup

When I updated to iOS 15 I lost over 1k of my voice memos. I am a song writer so really want these recordings back. I'd prefer to do this the fun way and save the $40 on a clunky backup/restore app ...
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External Hard Drive Encryption

How to check if external hard drive is encrypted and type of encryption (128,256-bit)?
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What is the practical difference between an unencrypted, password-protected Mac and a FileVault encrypted Mac?

In efforts to learn how to protect a new Apple-silicone laptop from theft, I'm trying to decide whether or not to use FileVault. I know it encrypts all your files on-the-fly, and the barrier to the ...
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Want to remove filevault prompt on shutdown/reboot

Whenever I'm logged in as a certain user and trigger a shutdown or restart, I get prompted to enable filevault. I have searched everywhere to find the hook that causes this prompt, but I can't find ...
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2 votes
1 answer
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Let's Encrypt with expired CA certificate and Apple Mail

This week - as my informations - Let's Encrypt CA certificate expires. This has guaranteed correctly managed by R3. However its two days that I'm fighting with these popup (see below). I renewed my ...
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Mounted encrypted sparsebundle starts giving "Input/Output Error"

I'm having a very strange issue that seems to have started after upgrading to macOS 11.5 Big Sur. I use encrypted sparsebundle disk images to hold sensitive information on my work Mac. I generally ...
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Does Apple Time Machine encrypt the backup on the client or the server / target?

I have a Time Machine NAS on a Raspberry Pi 4B with samba. Can you please explain to me how does Time Machine encrypt backups on NAS disk? I'm trying to figure out if encryption and decryption are ...
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Disk is no longer encrypted?

I swap between two external drives for Time Machine backups. I swap every few weeks. I just swapped back to a disk that used to be encrypted but it isn't anymore. The backups are working but I no ...
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1 vote
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Big Sur automatic hfs_convert to APFS STUCK at 10% on external rotational drive

So I have a 3TB external rotational drive that I only ever used with older macOS versions. Big Sur then decided to automatically do a background hfs_convert to APFS on the external rotational drive ...
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1 vote
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Recovery of deleted files from an iPad 2

I'm trying to recover a book (actually, just a video in the book) made by Book Creator on an iPad 2. The book was deleted and is no longer in recently deleted items. As far as I understand it is not ...
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How to decrypt WhatsApp iCloud backup

I downloaded my old WhatsApp chat history from iCloud which is encrypted. The SQLite file I am trying to open is ChatStorage.sqlite.enc which asks for a password to open but not sure how to decrypt ...
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Missing Encryption and Signing Keys iMessage

My iMessage and FaceTime have not been working properly the last coupe of days on my mac. I can see some of the new messages I've sent from my iPhone, I can send messages, but have not been receiving ...
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Free ways to extract files from encrypted iPhone backup

Does anyone knows any free (as in really free and not limited in any way) solution to extract files (messages, call history etc) from an encrypted iPhone backup? I know the password, so this is not a ...
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1 vote
1 answer
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can't mount an encrypted Volume on an M1 Mac. Works fine on Intel Macs. Known Issue?

Is this a known issue with M1 Macs and encrypted drives? What steps should I attempt to mount this volume? Encrypted drive will not mount on M1 Mac. Mounts on my intel Macs no problems. It’s Extended (...
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0 votes
1 answer
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Starting with gpg under macOS

I'm a Linux/Windows user but in the near future, I might have to support users running macOS on questions related to file encryption/decryption using GPG. I have to provide support without having my ...
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Recover formatted Encrypted MacOS Extended volume to HFS+ (HFS+ Encrypted to HFS+)

I've just accidentally formatted my 1TB HFS+ Encrypted partition (also known as Mac OS Extended (Journaled, Encrypted)) to HFS+ (Mac OS Extended (Journaled)) and lost all my data! Is it possible to ...
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Disadvantages of encrypting SSD disk at time of disposing of computer vs. at first use?

I know that one can encrypt a whole disk using File Vault when the disk is first used and loaded with user data. Wondering whether encrypting at time of disk disposal would be equality effective?
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1 answer
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Recover accidentally reformatted encrypted HFS+ volume

On my Mac I have an internal SSD divided in 2: encrypted HFS+, case-sensitive, journaled volume: noether 1 250 Go noether 2 250 Go Last night I mistakenly formatted the 2nd volume with Disk Utility: ...
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What does Converting (forward) mean in diskutil?

I had an APFS (Encrypted) disk which I chose for Time Machine backups on macOS Catalina. I was asked if it was OK to erase the disk (Time Machine on macOS Catalina dosen't support APFS). I answered ...
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2 votes
1 answer
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When and how does FileVault decrypt a SSD on a T2 Machine

Based on what the T2 chip, on user log in, decrypts a SSD with FileVault enabled? Bypassing the user password will result in a possible decryption of the SSD? As several years ago there where tools ...
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3 votes
1 answer
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How to check for and remove FileVault2 iCloud recovery key

[macOS Mojave 10.14.6] I created a bootable external SDD. I apparently didn't follow the traditional path of installing macOS and then enabling FileVault later in settings. Instead, I formatted the ...
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1 answer
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Quickest way to "destroy" the contents of a drive?

Consider a drive protected with the latest iteration of Filevault. If I wanted to make the contents of the disk unrecoverable, I could of course do a security wipe of the entire drive - which would ...
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2 votes
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iCloud Keychain encryption

I have a question about the strength of the iCloud Keychain encryption key. I know that when I enable iCloud Keychain sync on my device, Apple encrypts my local keychain and stores it on their servers....
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How to change encrypted volume password on command line? [duplicate]

Disk util shows the encrypted disk I am using for time machine with the following info: But the Menu entry "file -> Change Password" is greyed out. Tried to turn to the command line, I ...
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1 answer
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How To Change Time Machine Password - Mac OS Extended (Journaled, Encrypted)

How may a Solid-state drive (SSD) Time Machine backup password be changed for a SSD formatted as "Mac OS Extended (Journaled, Encrypted)"? Expected This is how a Time Machine backup password ...
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1 answer
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Which encryption algorithm do external hard drives use?

if external data carriers are encrypted via the Finder, which encryption do you use?
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1 answer
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Recognize encryption from UDIF

I have created a savings bundle and encrypted it with the standard SHA 2 algorithm with the usual hard disk utility. Can I see the encryption anywhere? They cannot be found in the disk utility or with ...
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1 answer
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How to send Data block to secure Enclave Processesor [closed]

How to send data block to Secure Enclave processor to use its AES engine for encrypting/decrypting data using its Hardware keys. SE don't share keys to anyone. So I think the only way to decrypt or ...
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Do linked files located on FileVault partition make the encrypted file readable?

Question Does a link, symlink, or macOS finder aliases to a file/directory located on a version 1 FileVault partition/container/volume to a partition not under the FileVault coverage allow unencrypted ...
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1 vote
1 answer
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Sync directories without too much overhead

I want to have a cloud-backup of my Documents directory; however, I'm not too fond of the idea of uploading the Documents in an unencrypted fashion. That's why I looked into the Cryptomator app. I do ...
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Restrict fat16 Veracrypt volume to single user on MacOS

I am trying to mount a fat16 Veracrypt volume on a multi-user MacOS system. The mounted volume always seems to allow full permissions for all users on the system. I have tried everything I can think ...
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5 votes
1 answer
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Does a DMG encrypt filenames?

I created an encrypted DMG on MacOS and sharing with my team (sharing password separate from DMG). My question is: if this file gets in the wrong hands, can someone figure out the filenames inside the ...
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