Applications :: Cascading Ciphers To Encrypt Files?
Jan 12, 2009
My question is related to using cascading ciphers to encrypt files (specifically using Truecrypt.) I am considering using Serpent > Twofish > AES.
I've heard a couple of different theories on this approach:
1. The resulting encryption will only be as strong as the weakest algorithm.
2. The resulting encryption will be as strong as the strongest algorithm.
Which theory is right?
Truecrypt uses the same passphrase for each cascading cipher. I've ben thinking that as soon as one cipher is cracked (probably the one which was used last in the encryption sequence) the plain text passphrase would be able to be simply used against the remaining two ciphers. Am I right?
Finally, is Truecrypt encrypting the data with one cipher, then encrypting the resulting encrypted data with another cipher, and then another? Or are the three ciphers being used to encrypt different sections of data?
I have imported a large number of CDs into my iMac, and I realized recently if someone managed to copy the MP3s off of my computer with a simple USB drive, they could steal my entire library! Is there a way to encode my ripped tracks with DRM to force iTunes to check if the computer is authorized to play them? I think I remember there was an early version of iTunes that allowed you to encrypt your own tracks with FairPlay DRM.
Is there anyway to encrypt incoming traffic so people wouldn't know what I am downloading? I have an airport extreme base station and am wondering if it is possible to do it through that. If not, what would be the best software way to do this? Now, since illegally downloading is bad
I have about 2TB of data on an external hard drive, which is connected by Firewire cable to my MacBook Pro. I am running Lion 10.7. One folder (and ONLY one folder) on the external drive contains documents with private data. I want to encrypt the folder, but not the entire hard drive. I tried System Utilities > New Image to create an encrypted disk image, but it seems to want to encrypt the entire image instead of just one folder. how to encrypt just one folder and the documents it contains, either with a proprietary Apple tool or with a reliable 3rd party tool?
Or are there better ways to do this? I read about some disadvantages and I won't be able to use file sharing with windows. I want to make sure my data's protected if my MBP got stolen.
So I have some sensitive documents in a folder on my Mac that I'd like to restrict access to. Is there a way to password protect a single folder within Finder so that people using my Mac cannot view the contents?Seems like it should be an easy thing to do, but it doesn't look like I have that option.
I'd like to encrypt my Mail folder in my Library. Is this possible? I'm not worried about other users on my mac, but if it is stolen, I'd like to know my emails cannot be accessed. I have TrueCrypt which I've used for files that I have created. It is quick and easy. But I'm not sure if this is compatible with an application like Mail which has a default file system. I've also hear that there may be issues later with mail if you try and search for emails once you've encrypted the folder.
I would really love some help with this; I've been banging my head against the wall trying to achieve something that is seemingly so simple and basic.
We want to use an Email app that will allow us to encrypt only ONE email folder. Access to the rest of the email should be open to all users of the computer, just the one folder needs to be encrypted or password protected. Apparently this is not possible in Outlook, because in Outlook for Mac all of the folders are now integrated into one database and so cannot be encrypted individually as they can on PC.
Does anyone have any suggestions of how to achieve this? I am considering using Mac's Mail, but can't find Mail file structure on my Lion machine to see if I can access the individual mailboxes separately. Does anyone know where to find Mail's folder structure? I looked in the Library but found nothing for Mail, as it used to be in previous OSs. Am open to third party software work arounds, other email clients, whatever.
I'd like to protect my thumb (flash) drives and want to know the easiest effective way to do so. All the freeware and shareware programs out there only add to my confusion.
I have a requirement to encrypt the whole of my boot drive and my mobile Time Machine backup drive that I shall be taking with me on travels. I know I can use FileVault, which will give me an encrypted disk image but I don't like the reliability of sparse images and need the whole of the boot drive to be encrypted. I have tried Truecrypt to encrypt the TM disk, but could not get Time Machine to see it. I've been looking at the Checkpoint Full Disk Encryption product. What I'm trying to find out is if I can encrypt a USB HD with it, but seem to be going round in loops between Checkpoint and resellers.
I have two G-Raid Thunderbolt RAID disks. Each is set up as a RAID 1 stripe (2 disks into one volume). I have my system disk encrypted with filevault, and would like to enable full disk encryption for the external disks as well. I tried the "Right click on disk in finder, select encrypt" option, but after I enter my choice of PW, I just get the error:
"A partition, not a whole disk, is required for this operation." Is this possible? Preferably, without formatting my disks all over again and enabling the encrypted FS at that time?
I would like to encrypt only one of the accounts I have associated with MacMail. To do this, I plan to create a new disk image using disk utlity, then dragging the particular Mail account to that folder. Since I don't want to encrypt all accounts, I'm not sure what folders I ought to put into my new encrypted drive image.
In the "homelibrarymailV2" folder, I do see the POP or IMAP folder for the account I want to encrypt, but I was wondering if I also need to add the "Mailboxes" or "MailData" folders that are also there since they seem to have information in them related to my accounts as well.
Info: MacBook Pro (13-inch Mid 2010), OS X Mountain Lion (10.8.4)
I want to use TrueCrypt to encrypt an external drive. I understand the new version of FileVault can do this but I prefer not to upgrade to Lion. I'd rather wait till Mountain Lion comes out later this year.
For those who have used both...Just wondering how TrueCrypt compares to FileVault in regards to encrypting an external drive. Also, I am trying to install or execute the PGP Signature to ensure that the TrueCrypt software that I am downloading from the TrueCrypt's Web site is authentic and has not been hacked.
How do I run or install it? I double-click on the PGP Signature file, a window pops up and says it cannot find an application to open it. I even tried removing the ".sig" from the end of the file name and it say it cannot open the disk image. There are instructions on the TrueCrypt web site for Windows users but none for the Mac users that I can see.
I used to sign and encrypt my emails digitally and then send them to people. I had two email certificates from Comodo, and it's been a while they're expired. so I renewed my certificates and deleted the old ones from my keychain, then downloaded and added the new ones. The trouble is I no longer get the digitally sign the message and encrypt the message button when I compose a new email.
Decided to encrypt my external backup drive. Instead, I essentially doubled my memory by duplicating my external hard drive and adding it to my MacBook. Now my startup disk is full and I'm stuck. I also have Time Machine but not sure how to restore (replace?) my Mac storage to what it was two hours ago.
I would like to use FileVault to encrypt both my hard drive and time machine back up external drive. Does encryption noticeable slow down the computer.
Info: MacBook Air (13-INCH, MID 2011), Mac OS X (10.7.4)
I have tried moving them to the trash, as well as using the move to trash button. They seam to go to the trash can but when I delete the trash they are still in the file. I am trying to clear out some old files so that I can have room on my start up disk. My Disk is full and it is making it hard for me to open more then one file. I am getting an external hard drive soon but don't want these files on it.
How can I convert m4v files made from Handbrake on the Mac into files which will play on an Archos AV700?Need to be in any of these formats: MPEG-4 SP, MPEG-4, DivX, DivX 5.0, DivX 4.0, WMV
does anyone know of a program I can use to change .m4a files (what itunes rips cd's into) into .mp3? I'm trying out a different music playing program, but it doesn't support .m4a's, which is what most of my music is...
I am trying to copy large .vob files from my video camera. My camera uses mini dvds. occasionally the movie file will fail to copy perperly because the data is damaged. Is there an application i can download that will fix the files so i can have a copy to edit in my movie software?
A couple of months ago, I was sent some WMV files that I need to watch. I installed Flip4mac and the files would play sound but no video. I have since upgraded to snow leopard and now it won't even play the sound. It shows me a status bar telling me that it is processing the file and then I get an error message telling me "additional software may be required to play this file" Anyone know how can I get these files to work?
I noticed that finder is not displaying all files when I look at folders with lots of files in "icon view" mode but they do show up in "list view" Same thing happened with the computer at work. I'm using OS X Leopard on both.
I recently went through my Applications folder and uninstalled some applications. Now and then, I'll find a file or a folder or a bunch of files and folders from an uninstalled application. Does anyone know of an application that can delete these files that I no longer need?
So, I have all of my imovie projects backed up on my external harddrive, as well as the imovie program. I accidentally deleted all of the imovie projects and events from the imovie application on my laptop. When I try to re-import the imovie files into imovie, it doesn't recognize the files. I have tried to convert them with iSkySoft Video Converter. That converter program does not recognize the files either. I also tried burning the files onto a disc and then pulling them off the disc with the Handbrake program. This doesn't work either. I also tried importing the files into iMovie HD, which I have on my desktop, but to no avail. Are these files alll useless now? I'm at my wits end because I have spent literally months compiling footage for a documentary.
