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)

learn more… | top users | synonyms

17
votes
5answers
9k 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. ...
13
votes
1answer
6k 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 ...
13
votes
2answers
4k 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 ...
13
votes
2answers
598 views

How can i enable Time Machine encryption on the command line?

Is is possible to enable encryption for a Time Machine target disk with a script/using the command line? Is an encrypted Time Machine disk really just the same as a normal disk, full-disk-encrypted ...
12
votes
4answers
4k 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 ...
12
votes
4answers
5k views

Is a hardware-based full disk encryption possible on a Mac?

Is it possible to use hardware-based full disk encryption (perhaps on a Samsung 840 Pro SSD) on a Mac, specifically a Macbook Pro 8,2? If so, how? My understanding is that this will be handled in the ...
11
votes
2answers
12k 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
2k 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) ...
10
votes
2answers
9k 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 ...
10
votes
2answers
3k views

What are the implications in speed and battery life while using Filevault 2?

One of the neat new (though understated) features of Lion is Whole Disk Encryption. Before I flick the switch, I'd love to know what the performance impacts (speed and battery impacts) of switching ...
9
votes
1answer
2k 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 ...
7
votes
6answers
692 views

Simple encryption software for the Mac

I am looking for an application which would allow me to encrypt either a file or a folder. Something like right click on a file/folder, select Encrypt, give it a password and ready. Of course, it ...
7
votes
5answers
6k views

Can I use FileVault only for specific folders?

Can I set up FileVault to encrypt only specific folders inside of my Home folder but not the whole Home folder? I want to do this because it's not very convenient for me to encrypt the entire Home ...
7
votes
4answers
3k views

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

I've got an encrypted disk 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 ...
7
votes
3answers
685 views

Is AFP (specifically Time Machine) encrypted on the wire?

I've been hunting for the answer to this, but I have not found it. When I back up my laptop using Time Machine to a remote Time Machine server (Time Capsule, or Mac Mini with an external drive), is ...
6
votes
2answers
2k views

How to make an expanding compressed encrypted disk image?

I'd like the following setup: A DMG file sits on my HD, taking up only the space of the contents, or perhaps only the space of the contents compressed. If I double-click on it, I need to give a ...
6
votes
1answer
4k views

Truecrypt error: the OSXFUSE file system is not available (255)

My truecrypt files were mounting fine until today when I tried to mount it and I got the error: the OSXFUSE file system is not available (255). The weird thing is I honestly don't know what I could ...
6
votes
1answer
11k views

Should time machine backups be encrypted

I am new to the Mac and was setting up my Time Machine. However, it seems Time Machine also backs up information in the keychain. I was wondering if that means I should use an encrypted disk to store ...
6
votes
2answers
1k views

How can I use FileVault encryption and still track my laptop if stolen

I've spent quite some time over the last few days trying to work out how I can combine the clear data security advantages of encrypting my machine with FileVault 2 under Lion, and the theft-recovery ...
6
votes
1answer
3k views

Does FileVault encrypt my BootCamp partition?

If I enable the new FileVault feature in Mac OS X Lion, will it also encrypt my existing Windows bootcamp partitions? (And/or any new bootcamp partition I create?) Update: If not, where can I get ...
6
votes
2answers
12k 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 ...
6
votes
3answers
3k 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 ...
6
votes
1answer
171 views

Verify Time Machine Encryption from the Command-Line?

Is it possible to verify whether a given Time Machine volume (for example, returned by tmutil machinedirectory) has encryption turned on? This is for regulatory compliance, so it needs to be fully ...
5
votes
2answers
406 views

GUI PGP / GnuPG application

I encrypt all of my documents before storing them in the cloud with GnuPG. My wife needs access to the documents, but running gpg -d foo.pdf.gpg at the command line is annoying to her. Does anyone ...
5
votes
5answers
4k views

What are my options for full system (or at least home directory) encryption?

I own a MacBook Pro, which is obviously a Laptop, so I want to protect myself in case it ever gets stolen. On Windows I can use TrueCrypt to do a full system encryption, but would that also be a ...
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
2answers
899 views

What is the s/mime encryption strength on iOS?

I've set up S/MIME on my iPhone, but unlike other mail clients, I'm not given the option to select the hash or encryption algorithms. I assume iOS makes this decision for me. Can anyone tell me what ...
5
votes
2answers
3k 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 ...
5
votes
3answers
2k views

Why is FAT16 limited to read-only with TrueCrypt on Snow Leopard?

I'm experiencing a problem with TrueCrypt. The problem is described elsewhere but not resolved for me. When attempting to mount encrypted containers, the following error is generated: hdiutil: ...
5
votes
2answers
2k views

How can I get Time Machine to back up the contents of a File Vault 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 ...
5
votes
2answers
735 views

Zip Utility with encryption option

Is there any good zip application for Mac OS X similar to 7-Zip (Windows only) which is free, compatible with many formats, and offers encryption options?
5
votes
1answer
95 views

Securing Lion user account directories from admin access

FileVault allowed me to create encrypted user directories, so that if I handed my computer over to the Apple store for repairs I could give them a clean admin account to do the necessary repairs ...
5
votes
2answers
591 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. ...
5
votes
3answers
1k views

How to send S/MIME encrypted mails from iOS with attachment?

I can only send encrypted mails if I start the mail app directly. But if I try to send a mail from the image gallery, the mails are neither signed nor encrypted (and I can't find a way to enable ...
5
votes
3answers
290 views

Encrypting sensitive data on Mac + Windows

I've been a long-time Windows user, using a utility called AxCrypt to encrypt sensitive documents which holded sensitive info (bank passwords, credit card numbers, etc). I had an encrypted Excel ...
5
votes
3answers
2k 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 ...
4
votes
1answer
3k views

How do I erase an encrypted TimeMachine drive on Mountain Lion if I've forgotten the password?

My question is similar to this question. I have a USB drive that contains an old encrypted backup. I don't remember the password and don't care about loosing the backup - I just want to be able to use ...
4
votes
1answer
141 views

How do I generate cryptographically random numbers on OSX?

I need to generate several cryptographically random numbers in OSX and save it to a text file. How should I go about doing this?
4
votes
2answers
403 views

Are there any public audits of the disk level encryption in Mac OS X Lion?

As a rule, one should never trust closed source cryptography software, but encrypting external drives and Time Machine backups has become quite convenient in Mac OS X Lion. Is that specific code ...
4
votes
2answers
287 views

How can I encrypt my VirtualBox VM?

Is there a way for me to use a virtual machine (VirtualBox) on my MacBook Air with encryption protection? I want to install a VM of Ubuntu, and if my employer calls back the hardware I don't want them ...
4
votes
1answer
3k views

How can I reformat a drive that contains an encrypted volume?

After OS X 10.7 came out with its disk-encryption features, I encrypted an empty USB thumb drive just for grins. I never used it, and eventually decided to reformat it as a normal drive for use with ...
4
votes
1answer
1k views

Apple Push Notifications SSL Error

The APNS worked fine for various month until few weeks. Every time we send Push Notifications the connection aborts with the following error: PHP Warning: fwrite(): SSL operation failed with code ...
4
votes
1answer
109 views

Is there a way to require USB drives that are connect a Mac OS X to be encrypted?

I have a customer who is concerned that the staff might be using USB drives to move data around. They would like to require that these drives are encrypted with TrueCrypt or other method. Is there a ...
4
votes
1answer
499 views

How to set up encrypted Time Machine backups to a remote drive?

I have an external drive which I used to do encrypted TM backups to, via a direct USB connection (i.e. the entire drive became encrypted - Lion). I would like to switch to wireless backups but ...
4
votes
2answers
461 views

With FileVault enabled, do I need to overwrite my hard drive with 0's before getting rid of it?

When I give up my laptop I like to securely delete the hard drive. I would assume that since it's full disk encrypted using file vault that I should be able to just delete the real key for boot ...
4
votes
4answers
1k views

iPad DropBox client side encryption

I have just gotten the New IPad - my first foray into the world of Apple. I'm eager to make the most of it that I can, for both personally and for work. In order for me to be able to use it for ...
3
votes
3answers
415 views

Convenient way to store sensitive information on Mac/iPad?

Currently I keep an obscurely-named text file on my hard drive which contains things like bank account and credit card details, various passwords, PINs, and other bits of sensitive/confidential ...
3
votes
1answer
5k 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 ...
3
votes
2answers
2k views

Warning: “CSUserAgent wants to access data stored in your keychain.”

For my backups I use an encrypted external hard disk. This hard disk has two partitions (names are: Backup, Private). Today, when connecting the backup I was prompted with the following message: ...
3
votes
2answers
779 views

iPhone 4 email encryption

I have a nice new iPhone 4. I can use it for my work calendar, but not my work email. The reason why is because I work for a medical company and email is very protected. I have heard that the ...