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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)

5
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3answers
4k views

Recover deleted Encrypted OS X Extended volume

I accidentally formatted an external 1TB HD to FAT file system using Disk Utility in Mac OS. The disk used to be HFS+ encrypted. Encryption was done when I created the OS X Extended partition, not ...
9
votes
1answer
3k views

How can ZFS be used with encryption on OS X?

Ideals: protection of home directories should be better than in Lion (for multiple administrators: FileVault 2 alone is less secure than FileVault 1) resizing a file system should be simple and ...
13
votes
3answers
40k views

How do I get rid of my encrypted iPhone backups to start from scratch?

Is there a way I can delete all my encrypted iPhone backups for which I forgot the password, so that I can start backing up from fresh? At the moment I'm stuck in this loop (below) which I can't ...
3
votes
2answers
20k views

Create backup iPhone with forgotten encryption password

I'm trying to make a backup from my iPhone, however it's set to be password protected. I do not know the password, as I've never set one. I've tried all the passwords I know, which I've ever used to ...
14
votes
4answers
3k views

Tools to compress and encrypt files

I want to compress several files and encrypt them with a password if possible. Are there any build-in tools in Mac OS that provide such functionality? If not, can you recommend me a (freeware) ...
11
votes
2answers
13k views

Is File Vault 2 whole disk encryption or whole partition encryption?

Can I use File Vault to encrypt only some of the partitions on my disk (so that I can still have unencrypted and Windows partitions on the same disk), or does File Vault encrypt the whole disk so that ...
7
votes
2answers
2k views

Difference between enabling Time Machine's “Encrypt Backups” option, and encrypting from Disk Utility?

I'm setting up Time Machine backups on a new external hard disk. I chose to first encrypt the disk via Disk Utility: But I also see these options: Is there any difference between an "Encrypted" ...
2
votes
1answer
69 views
+50

Automatically Mount Encrypted Core Storage Volume (10.14.4+)

Prior to Mojave 10.14.4, macOS would automatically attempt to mount locked Core Storage volumes, and if the necessary password was found in the current user's keychain this would occur automatically. ...
1
vote
1answer
1k views

Can I use an encrypted disk image for my home folder?

At work, several people use my machine. Can I set my home folder to be inside an ecrypted disk image? How would it work as far as mounting/unmounting whenever I log in/out?
3
votes
2answers
236 views

How do you encrypt a file or a single folder worth of data?

Looking for a way to easily encrypt a file or a folder with a password without having to make up an encrypted read write image in Disk Utility?
3
votes
2answers
2k views

How (in)vulnerable is OS X to encryption ransomware?

These days, malicious software seems to be infecting Windows computers, encrypting their data against their will, and asking for a Bitcoin ransom in exchange for the encryption key. In order for such ...
60
votes
8answers
65k views

How to view progress when encrypting a disk?

Mountain Lion allows one to encrypt any disk by right-clicking on the disk in the Finder and selecting Encrypt from the contextual menu. Is there anyway to check on the progress of this encryption ...
73
votes
3answers
70k views

truecrypt 7.1a requires Mac OS X 10.4 or later on Yosemite 10.10

After reading articles about the state of Truecrypt in February 2015, I decided to download the last stable version of Truecrypt that allows full usage of Truecrypt: that is, version 7.1a 7.2 ...
37
votes
4answers
19k views

Why can't I paste into the password dialog when mounting an encrypted disk image?

I've got an encrypted sparse bundle disk image and I've used fstab with the right UUID to mount it someplace other than /Volumes. What I would like is to just dbl-click on it, enter the password and ...
35
votes
6answers
31k views

Email encryption options on an iPhone

I've started taking security more seriously lately. (Why only now you may ask? Because I'm a trusting fool that's why.) I've now got emails signing automatically and encrypting where I have their key. ...
18
votes
9answers
68k views

FileVault Stuck on Pause

I just got a new 13" rMBP with Yosemite installed. I chose to enable FileVault when I set the machine up. Now, several days later, an app called "Reverting from FileVault" shows on the list of apps ...
19
votes
2answers
23k views

Encrypt external USB thumb drive on MacOS High Sierra

I'm unable to encrypt an USB thumb drive on MacOS High Sierra. Although I tried different approaches, it never worked: Use Finder (right-click, then select "Encrypt Drive"): this option is not ...
15
votes
2answers
6k views

What user behavior is necessary to make Filevault 2 maximally secure?

Situation: Filevault 2 passwords can be stolen Passware has released the Passware Kit Forensic 11.3 which is able to steal the FileVault 2 password from the RAM by performing a DMA Attack via the ...
5
votes
2answers
2k views

How can I get Time Machine to back up the contents of a FileVault while logged in?

Disclaimer: this question and answer are targeted to the Snow Leopard implementation of FileVault where the user home folder is only encrypted in a bundle. Lion's implementation of FileVault doesn't ...
3
votes
0answers
485 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 ...
7
votes
3answers
4k views

Speed of old Filevault vs. new Lion full disk encryption

How do the old Filevault and the new Lion full disk encryption compare speed wise? ATM I am using Snow Leppard with FileVault to encrypt my whole home directory, which makes opening IPhoto, Chrome or ...
5
votes
1answer
3k views

Does iCloud use client-side encryption?

I would like to know if iCloud uses client-side encryption i.e. all data is encrypted on client side and even Apple can't decrypt the data and read it. Is this true for iCloud?
4
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2answers
13k views

How to backup Time Machine's backup to a cloud?

I want to make any possibility of losing files on my Mac completely obsolete. Time Machine is awesome, but saving files to single physical hard drive is, well, not safe at all. So, I guess, what I ...
3
votes
2answers
1k views

How to find out which cipher suites an iOS application uses?

I'm trying to find out which cipher suites and SSL/TLS protocol an app uses. In the privacy policy it is written that it uses SSLv3 but when I tested the server of the app's developer using an SSL ...
2
votes
1answer
1k views

Password incorrect after enabling FileVault

I use FileVault to encrypt all my disks. Lately I had problems restarting my MacBook. After restart, the keyboard and mouse froze at login, making it impossible to login or do anything. It appeared ...
2
votes
3answers
8k views

iPhone backup encryption with password cannot be disabled

Hi have backups which encrypted with passwords and i know the backup password, i can restore it. There is not any problem. But i want to disable encrypting backup with password, here is the problem. ...
0
votes
0answers
67 views

Is there a way to have an encrypted folder on macOS with fast read/write operations?

I've tried and used Disk Utility to create an encrypted image, so I can store data in it securely. However, when I tried to write files to this image, the write operation was too slow (to write ~50 GB ...
22
votes
4answers
13k views

How is the System Keychain secured in OS X?

I'm looking for something either like this security white paper for iOS except for OS X or even better, some kind of security audit report from an independent expert. After reading through ...
21
votes
6answers
5k views

How can I password protect files in macOS?

I want to start a private journal on my Mac, but I want to make sure that the file can only be opened by me. How can I put password security on my file without it slowing down my computer?
20
votes
1answer
17k views

Time Machine drive encryption going for 22 hours. Is it stalled?

I set up Time Machine in Mountain Lion by plugging in a newly formatted 500GB USB drive, selecting that from the Time Machine dialog, and checking the box to encrypt my backups. A window appeared that ...
21
votes
2answers
34k views

With File Vault ON are time machine backups encrypted?

I have been using time machine to back up to a wireless external drive since I got my mac. Today I used filevault to encrypt my hard drive. Will this affect how Time Machine backs up my files? Will ...
11
votes
4answers
41k views

How can I mount an encrypted disk from the command line?

When I type diskutil mount disk3 in the terminal, it says Volume(s) mounted successfully. However, the disk is not mounted and I can confirm this by opening the GUI of Disk Utility.app and also the ...
7
votes
2answers
1k views

How to decrypt shared WiFi passwords?

With the introduction of iOS 11 and macOS High Sierra, a new feature was added: Sharing WiFi Passwords. This awesome and convenient feature comes with one draw back: The passwords are stored in ...
1
vote
1answer
303 views

Is it possible to have multiple filevault2-activated partitions on one disk?

What I would like to have: A disk with the following systems on it: OS X 10.8 (FV2-encrypted) OS X 10.9 (FV2-encrypted) Windows 7 When I try to start FV2-encryption on my secondary partition, OS X ...
10
votes
3answers
20k views

How do I encrypt an external drive with FileVault 2 in OSX Yosemite

Ok, so according to https://www.apple.com/osx/what-is/security/ I should be able to encrypt ANY external drive..."with ease" using FileVault 2. I have a brand new (empty) 2TB Fantom Drive model: ...
7
votes
2answers
6k views

Encrypted external drive usually prompts for password, despite being in keychain

I have an external encrypted drive, and almost every time I plug it in, it'll ask me for the password, even though it's already in my keychain. If I type the password in, it'll mount as expected. ...
3
votes
1answer
718 views

macOS File Vault 2 full disk encryption does not seem to work

I got a used MacBook Air 11 (2014) and the first thing I did was wiping the whole drive and re-adding partitions. I picked OS X extended journaled encrypted which should be the same as File Vault 2 ...
7
votes
6answers
5k views

External USB drive connected to Airport Extreme doesn't show up in Airport Utility

I have connected an external drive to my Airport Extreme, but it doesn't show up in Finder, and it doesn't show up in the list of drives when I connect to the Airport Utility. The same drive worked ...
6
votes
3answers
5k views

If I encrypt a Time Machine backup disk, is the entire disk encrypted or just the Backups.backupdb directory?

If I check the "Encrypt backup disk" checkbox in Time Machine (in OS X Lion), I get this warning: Will just the Time Machine "Backups.backupdb" directory be encrypted, or the entire disk? In other ...
5
votes
2answers
736 views

How to create an encrypted volume on an external drive or flash drive

How do you encrypt an external hard/flash drive connected to my Mac in Lion 10.7? Preferable something with a strong encryption as FileVault.
5
votes
3answers
2k views

How do I encypt Time Machine with Mac OS X Lion?

I am thinking about upgrading to Mac OS X 10.7 Lion, because it offers full disk encryption. However, if I use Time Machine with on an external hard drive, will the Time Machine backups be encrypted ...
5
votes
1answer
1k views

FileVault & multiple admin users' privacy

Using FileVault 2, when connecting a disk in target mode, the disk is locked and can only be unlocked by users authorised to do so. However, once it is unlocked, all contents are accessible to the ...
4
votes
2answers
15k views

How to open an encrypted dmg file in Windows?

I made encrypted disk image on my MacBook. Now I want to open it on my PC (Windows 10). How can I open (mount) an encrypted dmg image file in Windows 10?
4
votes
1answer
2k views

How does APFS encryption work?

I recently upgraded my 2013 MBP to High Sierra. This changed my unencrypted file system to encrypted APFS. Does Apple provide any information about how APFS encryption works? Does the account ...
3
votes
3answers
678 views

Is disk image encryption slower than partition encryption?

I am considering two options to encrypt some data: add a new encrypted partition add an encrypted disk image Which option is faster in terms of disk read/write speed? I suspect that an encrypted ...
3
votes
2answers
633 views

Cross Platform GUI-compatible Encryption

I am looking for an encryption tool that is completely cross platform - effectively like FileVault or BitLocker but compatible with both operating systems. My use case is that I'd like to encrypt a ...
2
votes
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 ...
2
votes
1answer
1k views

What are current cross-platform disk encryption options?

I just got a new 1TB USB SSD, to use as a backup drive. I need cross-platform compatibility and durability. I've used LUKS+ext4, and it seems both reliable and well-established (i.e. long-term support ...
1
vote
1answer
1k views

Mac OS X 10.10.5 - How can I encrypt only my home folder without Apple FileVault

How may I encrypt my home folder without using Apple FileVault? Is it possible to create an image of the user folder with DiskImage and mount that as home folder? How to make this. PS: I can't use ...
1
vote
1answer
3k views

User named [Update Needed] after installing yosemite with encrypted drive

I clean installed Yosemite on my macbook air. Everything went ok with the install, and when I restart, there is a second user named [Update Needed] . The password for this user is the same password I ...