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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How do I encrypt a built-in non-boot drive?

My iMac is a 2013 model with 7200 rpm internal drive. Needless to say, I boot from an external SSD. I found that you can easily encrypt an external drive by right-clicking and selecting "Encrypt..." ...
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Create encrypted partition for Time Machine from command line using diskutil or gpt, instead of Disk Utility?

I can use Disk Utility to create an encrypted partition, intended for Time Machine backups. I would choose the Mac OS X Extended (Journaled, Encrypted) format. However is there also away to achieve ...
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How does FileVault generate the key?

How does FileVault generate a recovery key? From my user password? Does FileVault use the same key to decrypt disk on startup as recovery key? Are they identical? I probably know the answers to this ...
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Should I protect (encrypt) my app's database or is it automatically protected from other apps?

My app asks the user several questions then stores all the answers in a local sqlite database file (e.g. answers.db). No data is transmitted outside the phone but answers are stored to let the user ...
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Is it possible to have an encrypted volume mounted at boot time before anyone logs in?

I use /etc/fstab to mount a few external volumes at boot time (using a UUID= line). That makes them available at boot before anyone is logged in and thus they can be used for certain services. This ...
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Preventing Volume Unlock Prompt

I have an encrypted APFS volume that I do not wish to be unlocked automatically, however, every time a user logs in on my system they are prompted to enter a passphrase for the volume, every single ...
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Double encryption when using encrypted Time Machine on MacOS Extended encrypted?

When I create a backup partition on an external USB drive formatted as Mac OS Extended (Journaled, Encrypted) and then use Time Machine to backup to this partition with Time machine's encryption ...
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Recover accidentally reformatted encrypted drive

My external USB-HDD formatted in HFS+ (journaled) and encrypted was reformatted yesterday by accident to HFS+ (journaled) - but no encryption. The standard data rescue tools fail to find any of the ...
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How to repair encrypted disk image which suddenly stopped recognizing password

I was in the middle of remotely backing up to a mounted encrypted sparse bundle (using rsync) when the machine was rebooted. Since it was an orderly shutdown, presumably the image should have been ...
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Cannot enable Time Machine encrypted backups since updating to Catalina

I updated to Catalina recently and previously I was able to backup my MacBook using Time machine backups. After the update time machine backup failed because of empty password issue (don't remember ...
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Filevault Decryption process : Kernel Panic - Method to kill decryption process?

I've been trying for two months to update my mac to Catalina, and last night on a suggestion, I disabled FileVault. All was going good and suddenly kernel panic. My mac keeps kernel panicking while ...
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How can I encrypt a 128Gb SD Card in Sierra (10.12.6)

I cannot erase a MicroSOCX SD Card (128GB) using a GUID partition map. I only get errors. Without a GUID map, I cannot partition either. I have tried it on both the main volume and the dependent ...
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How does Time Machine encrypt backups to network disk?

I see other questions regarding encrypting Time Machine backups to external disks, like this one: If I encrypt a Time Machine backup disk, is the entire disk encrypted or just the Backups.backupdb ...
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How can I prevent Time Machine encryption speed from dropping while leaving my Mac unattended?

I’m setting up a new disk for Time Machine, which is currently being encrypted. I’ve noticed that the encryption speed drops when leaving my Mac unattended; is there anything I can do to prevent this ...
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Encrypting a USB for use on Mac *and* Windows

I have an external USB drive and I would like to encrypt it – preferably on Mac, however Windows is an option. The USB should be ready to use for both Windows and Mac without the use of third-party ...
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Decrypt Filevault on a (removed) startup disk

I had a hardware issue with my old Macbook Pro which required me to remove the boot drive. I have attached it via USB to a new Macbook and can unlock and mount it, etc. However I don't see anyway of ...
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Can I boot from an external drive with hardware encryption?

Can I boot from an external drive with hardware encryption? For example I can add a password to my Samsung T5 that turns on the drive’s hardware encryption. Can I boot from that, as long as I know ...
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How do I encrypt Macbook?

How do I encrypt my MacBook, I have a windows computer for which I use BitLocker is there something similar for Apple? Macbook Pro Running MacOs Mojave I'm looking to encrypt my entire mac
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Viewing Text Message Histories on Windows PC

I have an iPhone 6s, and there are some very, very, long text message conversations on there that I'd like to be able to read through on my PC for the sake of convenience. I've already backed up my ...
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FileVault - One account can unlock but preventing full login and forcing logout and login again with other user

When I installed macOS I was able to do it on a newly formatted and APFS encrypted disk. That worked fine. Then installation went forward and on reboot I was asked for a DISK PASSWORD. ...
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Encrypted sparse bundle disk image visible in the cloud?

I have an encrypted sparse bundle disk image that I synchronize with Google Drive. When I mount this image on my local machine, is it's content also visible in the cloud (decrypted)?
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Encrypted APFS drive will not mount, RepairVolume reports disk OK

I had to encrypt an external backup volume while traveling. Unfortunately, now the drive will not mount. It shows up in diskutil and RepairVolume shows the volume being OK. Despite the passphrase ...
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Create and encrypt volume group on backup drive

Currently, both Carbon Copy Cloner and SuperDuper! suggest to start from creating backup to unencrypted disk, then boot from encrypted disk and enable FileVault on it. I've ran into couple issues with ...
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Can the Apple T2 chip be used as a TPM to enable BitLocker?

I have a 2019 MacBook Pro, with the Apple T2 Security Chip. I have installed Windows 10 via Boot Camp, and that is working well. I would like to turn on BitLocker in W10 and take advantage of that ...
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Time Machine Photo Backups

I did a clean install of Catalina because of some performance issues I was having and now I can't get my iMac to recognize the Time Machine backups on my external hard drive. I restored everything ...
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Reply to signed E-Mail with Apple Mail

I have received a signed and well encrypted E-Mail. I now want to reply to this particular sender using his public key in Apple Mail. But when I press the reply Button, the encrypt icon stays grey. ...
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APFS Volume encryption failed to begin (-69596) — Solved

So I have a problem to encrypt an external Thunderbolt-HDD which was converted to APFS. Catalina is installed on that iMac late 2012. First I've tried to encrypt the volume in the Finder via context ...
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215 views

How to create sha-512 password hashes on Mac for CentOS?

I need to generate password hashes on Mac for CentOS. I can generate sha with echo foopass | shasum -a 512, but as I've understood password hashes are more just one sha application. I've found some ...
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Is my new Time Machine backup okay if my MacBook went to sleep during encryption?

I started a new Time Machine backup last night and enabled the third-party app Amphetamine to keep my machine awake for 9 hours. When I returned in the morning, it appeared that my MacBook went to ...
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Which encrypted items show a hint?

I encrypted some drives with Disk Utility and set a password hint. This hint does not show on a different computer. It's embarrassing because those were backup drives and losing the computer means ...
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Password recovered from Keychain fails to decrypt volume

I lost my Mac computer and recovered some items from a backup. One was an a disk image with extension .dmg, with 400 MB, encrypted with Disk Utility, and last changed on 8th November 2018. The ...
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Why is my iPhone backup encryption password getting lost or changing?

I use a password manager and simply put, don't forget passwords. I have the "Encrypt iPhone backup" option set on Itunes and never had a problem in the past on my last iPhone. There are no backups ...
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Using recovery key on erased FileVault encrypted SSD

My understanding is that with FileVault enabled one can restart a Mac into its Recovery System and erase the hard drive/SSD using Disk Utility. This procedure supposedly deletes the FileVault key, ...
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What are equivalents of losetup and cryptsetup for Mac OS X?

I use losetup and cryptsetup to create a loopback encrypted file system. Is it possible to do the same on Mac OS X? If so, how?
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Can a firm with encryption keys decrypt iCloud keychain data of Chinese users?

Apple has already given all data of Chinese iCloud users to Guizhou on the Cloud Big Data Industrial Development Co., Ltd., (GCBD), as well as their encryption keys, which means it can decrypt these ...
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How to set a different encrypted boot volume without unlocking?

I have two MacOS installs as part of a dual-boot configuration on my MBP. Both happen to be Mojave 10.14. They are installed on two encrypted APFS volumes in the same APFS container. I want to be ...
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How can I encrypt or prevent access to a user's files to another user in the system?

I need to take my macbook pro (MBP 15 mid 2015) to a mac repair shop for a screen replacement. I don't want to leave my files exposed to another user in the system. I plan to create a second admin ...
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486 views

How to restore external hard drive from Time Machine backup the right way?

My Time Machine backup (6 TB USB-HDD) contains the data from my Mac's internal hard drive (2 TB) and from an external hard drive (USB 4 TB, Mac OS Extended, FileVault Encrypted) that I always keep ...
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How to make a dump of my iPhone so as to make forensics

I would like to be able to run a forensic analysis on my iPhone from a disk dump copy made on my Mac or any kind of Unix as I would from any external disk with a dd command. For those who are curious:...
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232 views

How to Stop Encrypting process in external hard drive? [duplicate]

I Have an external 8T external hard disk on "encrypting" process since 10 days in my MAC ... and stuck in 27% ... * Seagate with APFS. How can I stop the process and access to my info ?
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Looking for Encryption application

I want to encrypt a file then email it. The recipient needs to decrypt it. Needs to be free. I'm looking for an encryption application that runs on Windows 10 and macOS 10.10 at a minimum. Would ...
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I accidentally caused one of my encrypted drives to start converting into a decrypted drive. How can I stop it?

One of my external hard drives used for Time Machine backups has an encrypted HFS+ volume. While in the process of trying to re-associate the backup with my system, I accidentally told it to start ...
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164 views

Difference in encrypting a sparse bundle for Time Machine before or after mounting the drive?

I created a sparse bundle to use as my Time Machine back up hdiutil create -size 800g -encryption -type SPARSEBUNDLE -fs "HFS+J" -volname TimeMachineEncrypted TimeMachineEncrypted.sparsebundle When ...
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Why is my external HDD active when I'm not using it?

I have a partitioned external HDD (orange LaCie), with one partition for Time Machine. All partitions are Mac OS Extended (Journaled, Encrypted). The HDD is GUID Partition Map. I'm not (consciously) ...
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Formatting disk to Mac OS Extended Jorunaled, Encrypted taking very long. Is it normal?

so long story short, my newly purchased external SSD got corrupted a day after formatting it and wouldn't erase. I read somewhere on this site that if I tried to format it to Mac OS Extended (...
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Once backward conversion of encryption has started, can it be stopped?

I have accidentally given my external Extended journaled hard drive (with password) the command to "decrypt" the disk. When you restart the decryption starts immediately on the external, how can you ...
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FileVault 2 Full-Disk Encryption Alternative with LDAP Support

Has anyone come across a full-disk encryption alternative to FileVault 2 for macOS with better LDAP user support? I've been trying to identify a solution for macOS Mojave that: offers pre-boot, full-...
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How to prevent auto mounting of encrypted APFS volumes by diskarbitrationd

running 10.14.5 on a 2019 iMac. diskarbitrationd is responsible for noticing the appearance of new block devices and mounting them. this kind of auto mounting can be prevented by configuring /etc/...
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How can I mount an encrypted disk image so that it is read-write?

I have created an encrypted disk image containing a folder whose contents that I want to keep secure, using the disk utility app. I am able to mount this either by clicking on the image or by using ...
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How does the iTunes “Restore” erase method on MacOS compare to “Erase All Content and Settings” within iOS from a security view?

The “Erase all content and settings” option in Settings obliterates all the keys in Effaceable Storage, rendering all user data on the device cryptographically inaccessible. Therefore, it’s an ...

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