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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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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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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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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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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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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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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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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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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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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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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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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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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Is it possible to encrypt an HFS+ disk in MacOS 11.2.1?

I use USB-connected, mechanical disk drives as Time Machine backup media. I have a lot of data. I encrypt them. They are all formatted as HFS+ . In this post, I use the expression HFS+ to mean "...
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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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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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What security/encryption is used in an iCloud screen sharing session? [duplicate]

Does anybody have some pointers or information when it comes to the technical and security implementation of Apple's built-in screen sharing feature, the one where you start the Screen Sharing app and ...
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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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How do I encrypt an external HFS+ drive without erasing it on Big Sur?

I have a Time Machine backup drive, which has to be HFS+ for Time Machine to work on it, and which I don't want to erase since it has a long history of backups. I would like to encrypt it. What I find ...
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What happens to metadata of deleted photo iOS?

Suppose I delete a photo from the iOS Photos app, and then delete it from recently deleted. I understand that this "throws away" the key for decrypting the photo's data. But what about the ...
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Is there a FileVault compatible 3rd party Bluetooth keyboard?

Whole disk encryption on macOS requires HID devices to be able to connect before most of the system has booted up. Logitech support recommends turning off FileVault (!!) or not to use Bluetooth (their ...
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Is it possible to mount an ext4 partition, Luks encrypted SDCARD on a MacBook?

I saw the question below and now I know that I'm able to mount a EXT4 disk in a MacBook: Mount Ext4 on El Capitan But I do need to mount a LUKS encrypted disk. Is it possible?
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I have an incomplete physical encrypted iPhone backup that quit halfway through. Can I rebuild it with pieces from a complete backup?

I have an iPhone 6s running iOS 13.5.x, it was in the middle of a physical backup to my MacBook Pro when the iPhone started to bootloop (shortage of memory, Error 14). I have half of a complete backup....
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Is it possible to configure Time Machine to encrypt network backups?

Since NASes as usually 24/7 online, there is a certain risk of being hacked/compromised and it's not wise to rely solely on the drive's encryption inside of the NAS. Is it possible to set up Time ...
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Encrypting Disk stuck on “Status: Checking”

I have a Mac mini with 2 disk, and I wanted to encrypt the second (non-boot) disk. I used Finder's right click > Encrypt to start the encryption process. However, it seems to be stuck. diskutil cs ...
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Extreme hardening of my Macbook pro from physical hacking

Is the a way to double encrypt my macbook pro? I have followed a guide to harden my macbook pro but I wanted to know if I can harden it more. I have for example used file vault to encrypt my disk and ...
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What is APFS “Disk User” and how to add multiple crypto users via diskutil?

I recently learned that it is possible to encrypt an APFS volume within a container from the CLI using the diskutil command like so: diskutil apfs encrypt -user disk disk3s1 where disk3s1 is the only ...
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how does FileVault get the key to unlock an encrypted drive?

I an trying to understand how FileVault (specifically the later version used in recent macOS releases, i.e. FileVault 2) stores and retrieves its encryption key. This is prompted by two specific ...
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T2 chip encryption benefits: “Your encrypted SSDs automatically mount and decrypt when connected to you mac.”

I just read the mac page about SSD encryption by the T2 chip here Always back up your content to a secure external drive or other secure backup location so that you can restore it, if necessary. You ...
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T2 Chip/Filevault 2 Isn't Asking for Password Before Unlocking System Drive

I have a 2018 Mac Mini with an encrypted system volume that should only be unlockable by a single user. It used to be the case that when I started up my computer I get a brief apple logo then see a ...
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help recovering dual booted encrypted partition displaying FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I have actually found this similar post that Klanomath had provided a guide to but I have become stuck at step 6. this is what I was able to do and this is where I am stuck
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Can Apple decrypt iCloud data of third-party app?

Suppose that a third-party app is encrypted (say, with AES 128), and that this app stores data in iCloud through iCloud Drive. In general, can Apple decrypt this data as it would with data stored in ...
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Is there an auto-login setting for Filevault? (To avoid asking for password)

Is there an auto-login for FileVault? I ask because I think I had this but now I don't: I am now asked for "Disk Password" on startup of my Mac, but didn't used to be. The reason why I think ...
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Encrypted Time Machine backup is super slow using an encrypted USB volume?

I have an external USB3 disk connected to my MacBook Pro. I first formatted it with GUID/APFS and encryption, and used the "atto disk benchmark" app to measure performance. It showed about ...
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Is there any differences in what will be backed up between an encrypted and unencrypted Time Machine Backup?

I do make encrypted Time Machine backups to my Synology NAS which works exactly how I want it. But I recently had to restore from that backup and it's obviously very slow. Since this was a planned ...
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What does “FileVault: No (Encrypted at rest)” mean?

I have a new MacBook Air 2020 running Catalina 10.15.6 and I'm asking about the encryption on the internal SSD. When I run diskutil apfs list it shows that both the "Macintosh HD" and "...
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Encrypt existing TM-backup when the source computer is missing? [duplicate]

I have a bunch of Time Machine archives for old computers I no longer have. I want to encrypt these archives. Can that be done using a different computer than the one that was backed up? I have looked ...
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Encrypt old Time Machine backup for archival purposes?

I have a couple of old Time Machine backups (for computer A and B) that are stored unencrypted on an unencrypted drive. I would like to encrypt them for archival purposes but they need to remain ...
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APFS Partition Encryption Just… Disappeared?

When I installed my new hard drive (Samsung 860 EVO 500GB SSD) in September on my mid 2012 13-inch Macbook Pro (running Mojave), I also set up a partition to store sensitive files. The partition is ...
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How do I log-out (or reset) Microsoft's RMS / AIP [Azure Information Protection] identity on a Mac for Word, Excel, Powerpoint and Outlook?

Microsoft 365 offers a RMS / Right Management Service called Azure Information Protection which is integrated with Outlook, Word, Excel. It encrypts documents of certain files, in a nutshell. On a ...
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Unable to restore Time Machine backup from a network volume

I have a Time Machine backup on a networked volume and not a Time Capsule. The hard drive in my computer failed, so I replaced the drive and reinstalled the operating system. Afterward Time Machine ...
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Encrypt external drive without format, no finder option

I have a LaCie Rugged 4TB drive that I want to encrypt. It's partitioned in two, 3,8TB "Rugged" (Mac OS Extended Journaled) and 200GB "Transfer" (ExFAT). I want to encrypt the &...
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Time Machine encryption variations - how does each work?

I've seen some great answers on Time Machine encryption, especially one by Gordon Davisson. But the variations regarding networked volumes is still hazy. The rules for locally attached volumes seem ...
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Restoring `System.keychain` from a Time Machine backup without access to system `/var/db/SystemKey`

I have an old backup that (hopefully) holds the encryption keys to some encrypted disks in the System.keychain. To unlock that properly, I seem to need the /var/db/SystemKey that does not seem to be ...
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Encrypted disk is “corrupt” but unencrypted is fine

I have a USB hard drive that I want to use as my Time Machine backup disk. I want it to be encrypted. If I partition it as an encrypted disk, it finishes fine; but then if I run First Aid, it says it'...

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