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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3
votes
3answers
134 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 ...
0
votes
1answer
29 views

open bitlocker USB stick on mac os X

I have a USB stick encrypted by Windows 7 built-in tool (bitlocker). I would like to open it on my Mac OS X El Capitan. When I open it, all I get is a file "BitLockerToGo.exe" and another "Read ...
0
votes
1answer
61 views

Apple Mail doesn't show when a mail is encrypted (using S/MIME)

I have recently started using S/MIME since we got a certificate from our school and are advised to use it when possible. I am using El Capitan 10.11.4. The encryption and decryption process ITSELF ...
8
votes
3answers
11k 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 ...
3
votes
2answers
4k views

Has El Capitan Disk Utility Removed Encryption Options?

With Mavericks I would unlock an encrypted disk using "Disk Utility", but in El Capitan the "Unlock" button isn't there.
6
votes
2answers
5k views

How do I update the FileVault 2 recovery key stored in iCloud?

It's been a long saga getting to the point where I am comfortable that my new Macbook Pro has FileVault 2 enabled properly on Yosemite. I ran into the "Encryption paused - connect power adapter" ...
3
votes
1answer
26 views

Is there any part of OSX that gets a significant speed boost from Intel AES instructions?

I've been comparing some specs between Mac Pro models, specifically with the jump from Harpertown (a.k.a. Core 2) to Gulftown/Westmere (a.k.a. Core i7). While there were expected incremental ...
0
votes
0answers
30 views

Permanently Decrypt non-CoreStorage Partition Encrypted with FileVault

I am asking this on the behalf of someone who did not want to sign up for the SE network. I will use first-person for simplicity. When I bought my computer, it came with FileVault enabled as default. ...
0
votes
1answer
32 views

Is it possible to encrypt a hard drive that is dual booting ubuntu using rEFInd?

I recently installed ubuntu on my macbook pro. I am using rEFInd to dual boot ubuntu. Following the installation, I tried to encrypt my Macintosh HD partition by first converting the disk to core ...
0
votes
0answers
14 views

How can I make a secondary encrypted volume open during the boot process?

When booting off a FileVault encrypted volume, OSX is capable of accessing the volume for the boot process once the user has entered their password at FileVault prompt. I want to configure my system ...
2
votes
0answers
15 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 ...
1
vote
2answers
1k views

Mac OS X Mail signing messages with S/MIME certificate from startssl

I've got myself an S/MIME certificate from StartSSL, which I have exported from the browser, imported into my keychain and as expected Mail.app is now signing my outgoing messages. However some ...
0
votes
1answer
28 views

Can iPhone storage be read without the 4-digit password? Or is it encrypted?

I had a problem with the digitizer connector in my iPhone 5S so I can't use the screen anymore, I couldn't even unlock it to back it up. So I send it to a logic board specialist to replace damaged ...
1
vote
1answer
34 views

In which part of iOS is the auto-erase feature implemented and how does it work?

I followed the Apple vs FBI case a bit, and I'm super curious how Apple implemented the auto-erase feature. Reading their documentation, it seems like it is as simple as erasing a key that is used to ...
6
votes
5answers
3k 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 ...
-3
votes
0answers
40 views

TrueCrypt OSXFUSE error

I am quite late in stopping the use of TrueCrypt. In the meantime I wanted to open my encrypted files in order to move everything to another app. But this time I tried to open and I got this alert: ...
0
votes
1answer
52 views

unlock external locked encrypted disk with applescript command by filling dialog box to cracking password by force brut

I make a terrible mistake. I totally lost my paper with the secret password for my encrypted external GUID hard drive. This external drive contains many pictures but also some works documents very ...
3
votes
1answer
38 views

OpenSSL encryption method doesn't work on El Capitan

The following file encryption method works on OS X Yosemite: Encrypt: openssl enc -aes-256-cbc -salt -in file.zip -out file.zip.enc Decrypt: openssl enc -aes-256-cbc -d -in file.zip.enc -out ...
0
votes
0answers
51 views

How to list failed login attempts on Mac OS X 10.11 El Capitan (FileVault enabled)?

Just now, something strange when I open my Macbook Pro Retina : the password entry was locked for 30 seconds and a tooltip saying me to use the machine's encryption passphrase to unlock it. I wonder ...
29
votes
4answers
24k 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 ...
1
vote
1answer
57 views

iTunes local backup of iOS device: can't disable encryption

I have a strange problem with iTunes local backup of an iOS device (an iPod, in this case). I know I've backed up the iPod to my computer before, but iTunes states, "Latest Backup: Your iPod has ...
0
votes
2answers
32 views

Always ask for password when mounting encrypted partition

I have an external disk with partitions A and B. B is an encrypted HFS volume with as password. (Presented as "Apple_CoreStorage" or "Logical Volume OS X Extended"). When I connect the drive, OS X ...
2
votes
1answer
117 views

Does FileVault protect against ransomware?

I've already asked a question about ransomware on OS X in general. But I failed to get a response regarding whether FileVault protects against it. That is what this question is about. I'm also ...
0
votes
0answers
7 views

Preview of pictures in Cloudfogger wanted

I used to work with Cloudfogger on Windows. I like it there. On Mac I do not like the implementation that much. For example the preview of photos does not work from within Finder. Does anyone have a ...
0
votes
1answer
41 views

Error when encrypting .dmg disk image

I have a .dmg file of approximately 32 GB and I want to encrypt it. When I try to, using Disk Utility > Images > Convert, I get an error "status 28". Any idea what this means?
7
votes
3answers
575 views

TrueCrypt alternative for Mac OS X

I'd need to create an encrypted volume on my MacBook Pro running OS X El Capitan. It's been a while since I needed to do something like that, I think it was 2010 when I used TrueCrypt. I know that ...
3
votes
2answers
59 views

Do files copied to an encrypted disk image (dmg) encrypt themselves?

Disclaimer: I'm not sure whether or not this belongs in Ask Different or security.stackexchange.com, but I'm using a .dmg and Disk Utility, so I'll put it here. End of disclaimer. The title says most ...
3
votes
1answer
32 views

How do I encrypt emails using Apple Mail?

Gnu PGP was integrated into Mail using this project, but it appears to be dead (only supports old versions of OSX) http://www.sente.ch/software/GPGMail/English.lproj/GPGMail.html Is there any other ...
6
votes
2answers
460 views

Logging in to main user turns off the mac

I am not a mac user, and honestly, I have no idea how to use one (besides the terminal). So, a friend asked if I could help them out with fixing their computer. She says the last thing she was on, was ...
0
votes
0answers
37 views

howto encrypt “WD My Passport Pro” online? support.wdc.com with dangerous solution (no security)

I wish to encrypt my WD My Passport Pro drive. I receive error With Google I found An error message occurs when attempting to create an encrypted backup on a My Book Thunderbolt Duo in the Mac ...
1
vote
0answers
28 views

Is TRIM enabled for FileVault encrypted disks?

On a stock MacBook Pro without FileVault, TRIM should be enabled out of the box according to wikipedia. Infosec experts warn against TRIM in conjunction with full disk encryption. When ...
1
vote
2answers
259 views

Is there a way to force ssh tunneling to be required for Screen Sharing

I have enabled Remote Management on a mac. Everything works fine when I connect from another mac using Apple's Remote Desktop app. However, I also want to have a client on a windows machine. In that ...
0
votes
2answers
38 views

Need a cli to check the sha256 hash of a file

To check the sha1 of a file I would use openssl sha1 <file> I'm not sure what to use to check the sha256 hash of the file however, what would you recommend?
0
votes
0answers
23 views

Can data be recovered from a drive which was encrypted

I encrypted a USB drive of 16 GB few months back and stored files on it. Yesterday I destroyed its encryption using terminal diskutil cs list command without realizing that it had important data ...
0
votes
1answer
11 views

I've added a second HD into my Macbook 2011 instead of CD-ROM. Is it safe to encrypt it using Finder?

Years ago I changed my cdrom in my Macbook for a second hard drive, and have been using a SSD as a first drive ever since. This HD is shown in Finder, and, clicking on it with two fingers, there's an ...
5
votes
2answers
175 views

Encrypt External Hard Drive for Mac and Linux

I have an external hard drive that I backup with Time Machine. I'm trying to determine the best way (or if it's even possible) to encrypt it so that Time Machine can still back it up and it can be ...
1
vote
1answer
161 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?
1
vote
1answer
31 views

10.11: Good Samaritan message not showing on Filevault2 unlock screen

You can set up a lock Message under System Preferences => Security & Privacy => General => Set Lock Message. This Message is stored in NVRAM. Under 10.9 Mavericks it was not only shown on ...
0
votes
0answers
55 views

Keychain multiple

I´m new with Mac OS X, my system is El Captain 10.11.3. A few days ago I use keychain to generate two certificates for special purposes with other email address, do the export and all is ok. As I ...
0
votes
1answer
106 views

OS X 10.11 Disk Utility, encrypted dmg password and keychain

In previous versions of Disk Utility there were checkboxes whether to store the password in the keychain or not while creating an encrypted dmg image. Now there are less options. Does the new version ...
1
vote
1answer
30 views

Change encrypted internal HD permissions to prevent password prompts

I have an iMac (running OS X 10.11.3) with a dual disk setup. A ssd for the OS (with Filevault turned on) and a HDD for storage that is formatted OS X Extended and Encrypted. The intention is to ...
0
votes
1answer
30 views

Is there a limit on logical volume size for FileVault?

I'm curious about (and was unable to find documentation for) any size limits for FileVault in OSX (10.9.5 Server). I'm concerned about any sort of corruption/instability that could occur after ...
2
votes
1answer
193 views

Encrypt FAT USB drive under El Capitan (10.11)

I have a USB drive I would like to encrypt. It's formatted in FAT (for use with Mac & Win) and I can't seem to find a way to encrypt it as: FileVault doesn't encrypt FAT. TrueCrypt can be ...
1
vote
1answer
32 views

Protect files from other administrator accounts

So at work there is a "shared" server that people can run things on that take a long time. I make quite a bit of use of this machine to the point where I made my own login to separate my user files. ...
1
vote
0answers
30 views

Can a Standard User format an encrypted drive?

I have recently partitioned my drive into a trap OS. If my Macbook is stolen I want to give the users access to use the device to increase the chances they will connect it to the internet and I can ...
1
vote
1answer
42 views

Does using Sleep with FileVault negate some benefits of FileVault?

As I understand it, FileVault makes you login before you computer boots to the OS in order to unlock the drive. This means someone getting ahold of your laptop when it is off cannot get at the data. ...
3
votes
3answers
3k views

FileVault security hole when used on SSDs

I just woke up to the fact that it looks like user data can be leaked when using FileVault and Migration Assistant on an SSD on a new Mac when following the default prompts. When I set up a new Mac, ...
0
votes
1answer
296 views

How to encrypt exFAT on external drive?

I have a lot of data on my external drive. The file system is the exFAT. I believe it is not possible to encrypt that filesystem with FileVault. Do you know how (tool maybe) to encrypt exFAT on an ...
0
votes
1answer
34 views

How to secure my mail in iOS? [duplicate]

Can you please advise what is the best application for email encryption using iPhones and iPads?
10
votes
3answers
11k views

Change OSX encryption filevault password to match login pass

When I first setup my OSX laptop, my filevault and user login password were the same. At bootup, I only had to login once (with my username and password). I recently changed my OSX password but my ...