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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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Time Machine OSStatus-Error 80 (English)

I deleted MacBook Pro's disk, reinstall of Sonoma, Time Machine Backup is on a Synology DS My Time Machine Backups are password protected with the mechanism used by MacOS or Time Machine itself. I ...
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Assistance Needed with AD Account Login Issue on File Vault-Enabled Mac

I hope this message finds you well. I recently set up a Mac computer for a user in my office, as per their request. This is the only Mac on our network. I managed to bind it to our Active Directory ...
Prateek Singhal's user avatar
1 vote
1 answer
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Sharing space across encrypted/non-encrypted AFPS volumes

According to Apple's support documentation, Apple File System (APFS) allocates disk space on demand. When a single APFS container (partition) has multiple volumes, the container’s free space is ...
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What are my options for encrypting a mac server, but having it be able to reboot automatically after a power failure?

I have an old 2012 iMac running macOS v10.14 (Mojave) that I'm using as a home server, and I have it set to reboot after a power failure, so that it boots back up and starts serving again as soon as ...
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How are password protected Numbers files encrypted?

Does anybody know the security details behind password-protected spreadsheets in Numbers? I've checked the documentation on Apple.com, but it's not exactly flush with technical details. From Password-...
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TLS Certificate for SMTP Server

I have an e-mail account that uses a TLS client certificate as an additional layer of security on both incoming and outgoing e-mails. NOTE: This is different from simply encrypting the connection (...
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When did Apple switch FDE to FBE?

It appears that Apple started offering a storage encryption option on their iPhones since the iPhone 3GS. However, I am curious as to when the switch happened from encrypting using Full Disk ...
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macOS gpg decryption permission denied

I'm encountering an issue with GPG decryption when I try to decrypt a file with: gpg -decrypt filename.gpg I receive the following error messages: gpg: public key decryption failed: Permission denied ...
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Prompt for password for encrypted root partition on every boot

I have a MacBook Air A2681 13" and I'd like to disable the auto unlock on the root partition so it prompts for a password on every boot before unlocking the root partition, loading the OS and ...
Gábor Héja's user avatar
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Startup Disk "Reduced Security" setting effect on drive encryption

I have a M1 Mac. In order to install a legacy kernel extension needed for a peripheral, I have changed my startup disk security settings to "Reduced Security" as detailed here: https://...
applefan01's user avatar
3 votes
2 answers
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How to turn off encryption on previously encrypted HFS+ drive?

The drive mounts as PlexMedia_1 at 18TB. I have another drive that mounts as PlexMedia_2 that is 6TB. I am unclear why the Name field is populated with PlexMedia_2 and not sure how to correct that. /...
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Does Sonoma encrypt a disk without asking?

I installed Sonoma earlier today.  First time I logged in to my 2019 MacBook Pro Intel 15 inch after the upgrade, I got a notification that an encrypted disk had an unencrypted backup destination. I ...
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Can I restore from Time Machine even when encryption is not finished?

My external drive is not encrypted and therefore the Time Machine takes FOR EVER to encrypt the disk after backing my computer up. I estimate about 1 to 2 weeks minimum with the computer on every ...
Steve's user avatar
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1 answer
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Can I utilize T2 hardware based encryption for external SSD drive?

Or should I preferably get external SSD which contains hardware based encryption baked in? Why asking, because there are drives with and without hardware based encryption. For the latter if I could ...
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Decrypting with gnupg just halts and does not work

I couldn't find a solution to this: I cannot decrypt my precious files anymore (on my main computer). I am using pass which relies on gnupg. Trying to decrypt a file just halts and doesn't give any ...
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How exactly Apple Time Machine backups are encrypted?

I have a USB SSD that I use for Time Machine backups. I have backup encryption enabled. What keys exactly are used to encrypt the backup? Does Apple have any of those keys? How safe it is to keep this ...
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iOS S/MIME Encryption Issues 16.6

I am having an issue where S/MIME on my iOS 16.6 device is half working. I am able to receive/read encrypted emails and can send signed messages without issue. I am also able to send encrypted emails, ...
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How do I dedicate more of my machines resources to a specific task?

I don't know how FileVault even got turned on in my 2012 MacBook Pro running MacOS Catalina.. But it's been trying to do its initial encryption for 4 days now, over the past 20 hours I have simply let ...
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Password-protected text file which will open in Dropbox app

I have all my passwords and stuff in an Open Office Write document (.odt file) in Dropbox. That file is itself password-protected (which effectively means it is encrypted with the password being the ...
Max Williams's user avatar
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Volume based encryption for different OS sharing the same disk

On my macbook M1, I created two volumes (one for my professional activity and one for my personal activity). Each volume has it's own macOS. The goal is to prevent remote administrators of one of the ...
Jav's user avatar
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Can someone steal your information from the motherboard of your iPhone?

My iPhone has recently been stolen. I got a new phone with the same number and now I’m getting texts saying that they are going to sell the motherboard of my phone and that any personal information ...
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Can somebody explain encryption on a Time Machine drive?

Something is suddenly not clear about Time Machine external drives. And I'm also unclear on how one can tell whether an external drive is encrypted. My current active Time Machine drive (for my 2017 ...
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What is currently a good way to format and encrypt an external drive so that it's usable on both Mac and Linux?

I've looked at the threads on this, noting that there doesn't appear to be any new discussion since 2019. I would like to be able to encrypt an external drive, but still have it readable across ...
hbquikcomjamesl's user avatar
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Does the iPhone have an unencrytped boot partition?

I'm trying to understand how the iPhone (and any other device) accomplishes its full-disk-encryption. When I have experimented with this on a Linux machine, when I encrypted the disk with LUKS ...
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Is there any way to decrypt a hardware-encrypted internal SSD?

My mid-2019 MacBook Pro has a fault on the mainboard that causes it to crash soon after (sometimes while) it boots. I’m trying to get the data off the internal SSD. When I boot it in target mode (by ...
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Does the Apple File System Reference specify the wrong encryption algorithm?

I’m trying to understand encryption in APFS. The Apple File System Reference (p. 136) states several times (steps 2, 5 and 7) that unwrapping is performed “according to the algorithm described in RFC ...
joriki's user avatar
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1 answer
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Can I recover data from a Macbook drive which I overwrote with Windows?

Last night, I decided to try creating a Windows 10 recovery disk and boot from it on my Mac. While I was successful in formatting an SD card with the Windows recovery disk and booting to it, I made an ...
Daniel Pulitano's user avatar
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2 answers
135 views

Encrypt PDF on Linux, decrypt on Mac? (in 2023)

There are many tools available for the Linux user to encrypt a file: Encrypting/Decrypting a single file in Ubuntu 12.04 LTS. I want to… encrypt a single PDF on my Linux OS, email it to a non-...
Hunter's user avatar
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1 answer
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Encrpyted APFS + replace motherboard means data lost?

I had to replace the motherboard on a MacBook Pro 2015 A1502. It was running on encrypted APFS. When I try to mount the partition in Recovery Mode, it doesn't accept the password. I'm thinking it ...
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1 answer
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Encrypted and access-restricted iCloud Drive folders on iOS and iPadOS

I use my iPad frequently in a teaching environment where it is unlocked and used by other people when presenting. Also, when I work with iPad in a shared office (I use iPad with Magic Keyboard as a ...
John's user avatar
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1 answer
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Converting an existing 'Data' volume to APFS encrypted

Laptop: Macbook Pro M1 OS: macOS Ventura 13.1 I regularly work on sensitive data on my laptop and I want everything to be encrypted by default. The best way to do that I imagine is to encrypt my ...
lolski's user avatar
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2 votes
2 answers
583 views

Does FileVault work if I use iCloud

My question is the following: If I use FileVault, will it only protect the data which is not uploaded to the iCloud, or will files uploaded to the iCloud be encrypted? If all files stored in the ...
Always_learning_new_things's user avatar
1 vote
0 answers
81 views

What is minimum MacOS version to decrypt external Mac hard disk encrypted through Finder?

If you want to encrypt and password protect an external Mac HD/SSD and don't want to reformat it (because, perhaps, it already has data on it), one can use this technique, which involves right-...
Cerulean's user avatar
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4 votes
1 answer
644 views

How can I encrypt a Disk Utility RAID volume?

I have two SSDs in an external enclosure, exposed to the OS as independent drives. I want them to appear as a single encrypted APFS volume, with RAID 1 mirroring. I'd like to set up RAID via the ...
DNS's user avatar
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3 votes
2 answers
208 views

iOS encryption key derivation (from PIN code)

iOS has recently requested me to confirm my PIN code which is used to encrypt my data. If the PIN code is used to derivate the encryption key I find this weird since most PINs are a 4 or 6 digit ...
Ozwel's user avatar
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3 votes
1 answer
665 views

How to check if a macOS TimeMachine backup is encrypted?

Is there a way to check if a TimeMachine backup is encrypted on macOS Ventura 13.1? In the UI it's not visible: If I check the files on the network drive I see this: I have no idea how to check if ...
faze's user avatar
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0 answers
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dd macOS disk – encrypted after dd

I am trying to clone a regular macOS disk (iMac to MacBook – MacBook connected in disk mode) with APFS (not encrypted or something). For this I am using dd to clone the whole disk. Strange is, that ...
Kevin Lieser's user avatar
2 votes
1 answer
288 views

Encrypted APFS flash drive suddenly became unencrypted with most files not accessible

So this was very weird for me. I was using my 32GB Sony Flash Drive (APFS, Encrypted), when all of sudden it got unmounted. When I mounted it back it did not ask for a password. The drive was listed ...
Sambit Saha's user avatar
1 vote
1 answer
128 views

Discard FileVault 2 key - macOS

As far as I'm aware, on iOS when you click the power button 5 times, you effectively nuke the encryption key used to protect the device (which is ultimately derived from your passcode). With regular ...
Woodstock's user avatar
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2 votes
2 answers
681 views

Is there any possibility of recovering data from a formatted drive that was APFS encrypted?

I accidentally formatted an external drive that was APFS encrypted. The new format is also APFS (Encrypted). Is there any way to restore the formatted data from the old encrypted drive? I know the ...
Oion Akif's user avatar
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0 votes
3 answers
276 views

What happens to backups I lose my laptop?

I have a 2021 M1 Macbook Pro that is password protected with a weak password (5 characters). I want to create a local backup of my Macbook but I am wondering what will happen if I lose physical access ...
JohnDoeFromTheFuture's user avatar
1 vote
1 answer
727 views

Unlocking Encrypted Drive after too many unsuccessful attempts

I have a FileVault encrypted disk partition on the internal SSD of my Monterey M1 MacBook Pro. I entered the wrong password too many times and now when trying to mount an encrypted drive in Disk ...
George's user avatar
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0 answers
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How do I compress an encrypted time machine disk image?

I have an archived read-only Time Machine drive sitting on a NAS. It is a straight dump (made with dd) of a CoreStorage encrypted HFS+ hard disk. It's taking up 10TB, and I expect that the much of the ...
Glyph's user avatar
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0 votes
0 answers
60 views

Timemachine multiple passwords

I have several standard user accounts on a Mac OS computer. I have setup a timemachine backup. This backup is protected by a password. So files are encrypted on the external backup drive. Each user ...
Bob5421's user avatar
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0 answers
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Encrypted file image access

I have 3 users on a mac os computer: Administrator user A: Standard Account user B: Standard Account User A should not see User B files. And User B should not see User A files. User A has an ...
Bob5421's user avatar
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1 vote
0 answers
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fatal error: openssl/conf.h: No such file or directory | Home-brew OpenSSL on MacOS

Question It seems like gcc can't read the headers in the include folder of OpeenSSL. Shouldn't the flags I added in the ~/.zprofile help with finding that, though? What am I missing? Original Task ...
FET's user avatar
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2 votes
1 answer
327 views

How to recover data on an Intel based MacBook Pro 13" 2020 with the T2 security chip? FileVault was never enabled

I understand that Apple can unlock it if one provides proof of ownership, but my friend bought his computer on eBay and has been unable to get the original owner's help. He does not have a recovery ...
bigg_b's user avatar
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3 votes
1 answer
212 views

TEMP files encrypted on IPhone?

I am going to sell my iPhone soon and wondered as to the safety of the temp files/cache files on iPhone for apps like twitter,Reddit,WhatsApp ETC. I am aware that iPhone has File based encryption and ...
John Santorini's user avatar
3 votes
1 answer
636 views

How does macOS encrypt iOS backup when password is not in Keychain?

I regularly backup my iPhone and iPad devices to my Mac and for many years have been doing an encrypted backup. Based on reading elsewhere like answer here and the comments I'm going to assume I did ...
NoahR's user avatar
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1 vote
0 answers
44 views

How do I set password and AES 256 for external HDD?

I want to set a password and AES(128/256) encryption for my external HDD so one has to enter a password to gain access. How can I do this? I’m asking because I don’t see such an option in Disk Utility ...
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