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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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741 views

after High Sierra upgrade: very slow opening big files > 1 GB and message “Verifying”

When opening a big file (for example with VLC or QuickTime) this message pops up for lots of seconds (different durations for each file): I use encryption on iMac 5K. > diskutil list /dev/...
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382 views

Difference between FileVault and setting a partition format to Mac OS (Journaled, Encrypted)

Since I have multiple partitions (some for Linux and some for Mac OS) I can't enable File Vault. It somehow complains that it can't do the encryption, given that there are other partitions. Now what ...
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488 views

Apple Backup encrypted format specs? I need to decrypt part of a backup (for which I have the key) that iTunes won't restore

An odd one here: Encrypted iTunes backup backup completed successfully Key stored in the Keychain (since the first backup of this device a long while ago) Also stored in PasswordSafe and both ...
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641 views

How does FileVault 2 recovery key stored in iCloud work?

When requested during the full disk encryption process, one option is to store the recovery key in your iCloud account. I stored mine in iCloud, but frankly I'm confused as when I look at the drive ...
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312 views

FileVault stuck on decrypting 90%

I couldn't partition my hard drive because FileVault was turned on. I then started decrypting, but it got stuck on 90%. After 4 days at 90%, I can still access my device, but it's laggy and ...
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646 views

Encryption of APFS volume won't finish

A few weeks ago I told all of my three external hard drives to encrypt. This went well, macOS (10.13.4) converted them to a APFS formatted encrypted volume, except for one drive. This drive doesn't ...
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651 views

Can't mount encrypted HFS volume

I have an external hard drive that is partitioned as a single encrypted HFS+ volume. Here's what's going on: The volume won't mount, Disk Utility won't repair it. diskutil cs list says: However: ...
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1k views

FileVault is frozen and slowing down computer

I'm having issues with FileVault being stuck while encrypting, and it's causing major slow downs in my system. I initially had my file system set to case-sensitive, which prevented me from installing ...
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533 views

How to make sure MacOS Recovery creates a Recovery Partition with Time Machine Restore?

I took a Time Machine backup to an external drive from old MacBook (Sierra) and then put it to a new one (High Sierra automatically) using macOS Recovery and "Restore From Time Machine Backup". Drive ...
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75 views

How do I prevent OS X from immediately trying to mount unlocked drive / prompt for password?

Due to a hard disconnect of my encrypted external hard drive, it seems my HFS+ partition has become corrupted. Every time I unlock my hard drive, OS X tries to mount it silently in the background and ...
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443 views

Restore Encrypted Time Capsule Backup

What is the proper way to restore a MacBook from an encrypted Time Capsule backup? AppleCare fixed my MacBook and had to replace the drive. I am now trying to restore the Time Machine Backup that is ...
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267 views

Encrypted External Drive Using Apple's Password Generator and Forgot the Password: Can It Be Salvaged?

I have a partition on an external HD with some Time Machine backups. I decided to encrypt the partition using Finder and used Apple's built-in password generator to create the passphrase. ...
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902 views

Non-extractable private key in Keychain Access.app

The manual page for /usr/bin/security on OS X 10.9 indicates that there is a -x option for security import to specify that private keys are non-extractable after being imported. How is this ...
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254 views

Is there a PGP/GPG Plugin for TextWrangler?

Is there a PGP/GPG plugin for TextWrangler? If so, what is it called and how do I go about downloading and installing it?
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143 views

How to encrypt external network drive timemachine backup

I am following this: https://www.makeuseof.com/tag/turn-nas-windows-share-time-machine-backup/ Which basically says that you have to create a sparse disk image and put that on your external network ...
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748 views

MacBook Pro 2018 Windows Boot Camp with FileVault 2 and Bitlocker without TPM

I just got my new MacBook Pro Mid 2018, encrypted my Mac OS Mojave partition with FileVault 2, installed Boot Camp and Windows 10 Pro and wondered if it is possible to encrypt the windows partition as ...
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159 views

Pause External Disk Encryption

I have a large external drive that I would like to encrypt using my laptop. Based on the size of the drive, I believe the encryption will take several days. I would really like to be able to unplug ...
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299 views

How to install and migrate to High Sierra on an encrypted FS?

[ I am in the process of migrating an old MacBook Pro to a new one. ] I made a complete 8 GB USB "Install macOS High Sierra". I checked it (Disk Utility) from my running old MacBook Pro. I booted ...
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56 views

Time machine - does it do its own encryption, beyond volume encryption?

Time Machine allows encrypted backups. Where does this encryption happen? Is the data written to files inside the time machine volume encrypted? If so: does this mean it's possible to end up with "...
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99 views

Recover deleted encrypted boot drive, need all data back

Is there a way for me to recover all of my data from an encrypted SSD? MacOS Sierra, MBP early 2013, 16 GB RAM, 768 GB SSD, 2.8 GHz. My computer went black screen due to another problem with my ...
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0answers
107 views

Recover deleted Encrypted OS X Volume

I'm in the same situation as Recover deleted Encrypted OS X Extended volume but the recovery process did not work, understand there still a potential way to fix this but I need to view part of the ...
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1k views

How do I mount an encrypted disk in single-user mode?

How do I mount an encrypted disk in single-user mode? I tried using one of the answers to “How can I mount an encrypted disk from the command line?”; but when I tried using “diskutil” as suggested, I ...
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432 views

MacOS keychain encryption strength

On a Mac not using hard drive encryption, how difficult would it be for an attacker with physical access to a machine to break into the keychain? This document answers the question for iOS 10 (the ...
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404 views

External Drive Encrypted Journaled - Show Password Hint

I encrypted an external hard drive using MacOS Journaled Encrypted about a year ago. I'm confident that I was prompted to provide a password hint when I entered the original password and formatted the ...
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0answers
89 views

Encryption after decryption

I have a file encrypted. I want to get the content of the encrypted file and after that I want to encrypt the file with a new key. openssl Type-of-Encryption-used -d -k "key of decription" in- ...
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901 views

How do I mount an encrypted DMG on Windows

I am looking for a piece of software that can mount a DMG file on Windows or encryption software that can mount the encrypted volume as a virtual drive on Windows or mac Most of the software I have ...
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80 views

Why is my empty sparsbundle so big (1,5 GB)?

I just followed the instructions here to create a encrypted sparseimage for Time Machine backups. The empty sparsebundle ended up being 1.4 GB (and after enabling encryption it grow to 1.6GB). Why is ...
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745 views

What type of encryption does iOS 8 use for Bluetooth?

I know that iOS 8 encrypts Bluetooth connections: https://www.apple.com/br/privacy/docs/iOS_Security_Guide_Oct_2014.pdf https://support.apple.com/en-us/ht3647 What I don't know is what kind of ...
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0answers
436 views

Brute Force on Whole Disk Encryption

I'm helping someone that changed their password (Thanks to corporate policy) and then forgot what they set it to. They remember the first part so I would not need to completely brute force it. I was ...
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0answers
894 views

Timemachine backups on encrypted volume: What does 'decrypting' message mean?

I backup files on an encrypted volume with Timemachine (external disk, USB). The backup itself is not additionally encrypted. I noticed little message infos in the GUI window about "decrypting the ...
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0answers
869 views

Locked Hard Drive

For some reason a recent reboot resulted in a startup screen with a circle with a slash icon instead of the regular Apple icon. What I tried: Using internet Recovery I used disk utility to fix ...
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542 views

S/MIME Self-signed certificate problem on iOS

I am using S/MIME self-signed certificates for email encryption across iOS and OS X. Creating the certificates and installing them (including the CA) worked perfectly. Also using them on OS X worked ...
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953 views

Mail.app : What do the padlock icons mean?

If I encrypt an email with S/MIME an icon showing a CLOSED padlock is displayed under "Security". However, if I encrypt using OpenPGP it's an OPEN padlock icon. Both are followed by the word "...
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285 views

MacZfs with encryption on os-x

I have followed these steps for setting up zfs (maczfs 74.3.0, OSX 10.8.3) with encryption. Everything works fine, till I restart the computer. After the restart, diskutil informs me that the file ...
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198 views

why would keychain access silently discard an S/MIME X.509 certificate?

A co-worker sent me some S/MIME signed email. With anyone else who has done this, the certificate has shown up in my login keychain. Not so with his. I wrote out the attached p7s file, and verified ...
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546 views

Mac OS X Server: automount encrypted drive before login

I have a 4TB Mac OS Extended (Journaled, Encrypted) hard drive hanging off a Mac OS X Lion (soon to be Mountain Lion) Server that is dedicated to networked Time Machine backups. I'd like to be able ...
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0answers
2k views

FileVault 2 gives “boot file not written” error

I'm trying to enable FileVault 2 in Mountain Lion, but a few steps into the process of turning on the encryption I get the error "Boot file not written" and the encryption fails to succeed. Anyone ...
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367 views

macOS Mojave hibernatemode 25 | Dark Wake/ sleep wake

I have set hibernate mode to 25 and the standby time to 0 in macOS Mojave. Now my idea is that the Mac goes to deep sleep (no power to RAM). Most of the time it works; if I open the lid I see this ...
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90 views

APFS encryption passphrase questions

Out of curiosity, I have a couple of questions regarding APFS passphrases. Using diskutil I found out that each APFS encrypted volume includes several cryptographic users, which at least in my system ...
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0answers
23 views

Opening/saving encrypted zip file from iOS mail app

I have a problem with opening an encrypted/protected by a password zip file from an e-mail in an iOS mail app. I can enter the preview of the file, however it is a blank page with the file name only ...
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104 views

How can I verify the backup password for an iOS device?

In iTunes, my iPad shows itself as backing up to "This Computer", and the "Encrypt Local Backup" button is checked. I believe I know the password, but I would like to be sure. How can I verify that ...
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996 views

Why am I getting “Time Machine is backing up an encrypted disk to an unencrypted disk” when I'm not using encryption?

I have a new MacBook Pro 2018 model. It is using APFS but I have not enabled File Vault. I'm backing up to a Synology NAS, just but when I run my backups, I get the message: Time Machine is ...
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47 views

iOS settings to make default data routing on iPhone connect via a Tor node

Is it possible to set up my iPhone to route data to a Tor network by default before it is sent to some other app database or internet? If so, how would I configure my settings to connect to a Tor ...
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0answers
32 views

How to import self-signed certificate over SSH? (bounty)

I'm trying to remotely (SSH) import a custom certificate into Firefox and/or Chrome. It looks a similar question has been asked before, but didn't get an answer. I put a 150 point bounty on it in ...
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69 views

Encrypted Disks don't mount in Disk Utility and Finder on OS X 10.9

I've encrypted several external USB disks, both Time Machine and regular. On my MacBook running OS X 10.12, I plug it in, a dialog pops in the Finder asking for my password, I type the password, and ...
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99 views

External HD not showing up in Finder

I have an external hard drive, been working perfect as an extra backup. Now all of a sudden I cant see the content in Finder. I can't eject it and it's greyed out in Disk Utility. Any idea what I can ...
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667 views

How can I *unlock* a CoreStorage volume that is not recognized?

I have a 4TB Seagate Expansion Portable Drive with <1 TB data. It's HFS+, GUID Partition, encrypted with File Vault. It was unplugged without disconnecting, and now the disk image does not mount. ...
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293 views

Bruteforce FileVault Encryption?

I've been getting into forensics and penetration testing lately and hoping someone can explain what the below data is and how it might be used to perform a bruteforce (hashcat) attacks against ...
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145 views

Recover overwritten Encrypted OS X volume (APFS)

Is there a possibility to recover a 2TB APFS partition that has been altered by a fomatting command to a new 2TB APFS partion (i.e. the real data has not been deleted, encryption password is knonw, ...
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0answers
72 views

How to create a Windows Compatible Encrypted disk image?

I need to send a file over Email securely. My idea was to use a Disk Image containing the file. Unfortunately, the person who I am sending the file to has a PC running Windows 10. I need a way (...