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  • Which is the most independent and secure email service? [closed]

    - by Rafal
    I'm looking for a provider with a secure transfer protocol (like https) Secured (as much as it is possible) from being hacked or spied on. One that won't scan my email in order to display more accurate ads. One that won't sell my personal information. One that won't disclose my emails to some sort of government (it probably must be based outside of US or Chinese jurisdiction I reckon) Encrypted if possible. It can be simple and without huge storage. If you know/use any similar service I would be really grateful if you could point me there. Cheerz

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  • USB key to pass password in Centos 6

    - by Andrew
    I had a room mate that put a livecd in my desktop and looked around on my machine. I caught him in the act and threw him out. I haven't had a room mate for a while now and so as to avoid the livecd issue again I encrypted the hard drive, the machine is running centos 6.3. Is there anyway that I can avoid typing the password in each time if I have usb key in the machine to feed the password to the system? Additional question. Is there anything you can suggest to solve the problem I have ? Thanks

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  • Truecrypt or default Disk Utility on Mac?

    - by Kaushik Gopal
    Windows by default doesn't come with a password protect folder option (other that Win7 ultimate), so I used to swear by Truecrypt which was great. But I've read in a couple of places that Mac OS X by default has a way of protecting folders using the Default Disk Utility. So my question is which is better, using TrueCrypt on the Mac or just sticking with the default Disk Utils app? Can somebody let me know the advantages of one over the other? A summary from the very helpful answers below: if you're looking for cross-platform usage Truecrypt is the obvious tool of choice if you're looking for convenience, and intend to stick only to the Mac platform, use the default Disk Utils app.

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  • Enabled storing Bitlocker keys in Active Directory, is there a way to upload keys of drives encrypted before this?

    - by Rossaluss
    We have enabled storing of Bitlocker keys within the device object on Active Directory, however before this was implemented, we had encrypted 100+ devices using bitlocker and we've only found ways to upload the key to AD when enabling bitlocker for the first time on an install. Does anybody know of a way where we can upload all the keys for all the devices which already had their drives encrypted with Bitlocker into their respective device objects in AD? Or are we going to have to decrypt and re-encrypt all the devices on the floor? (Google seems to say this is what we're going to have to do, however we're no experts in Bitlocker, so may have missed something) When we go into Manage Bitlocker of an already encrypted device, we only get the same options of saving the key to a file, a memory stick or printing it out, no option is available to save to AD etc. Any help would be appreciated.

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  • If I scp a file through an intermediate server, is the file stored temporarily on the server?

    - by Blacklight Shining
    For the sake of simplicity (I find it easier to remember names than arbitrary letters), I will dispense with letters and use names to refer to the machines in this scenario. Say I have two machines, applejack and pinkie-pie, each on their own separate LANs and not in the same physical location. I also have a server, cadance, with a direct Internet-facing connection. I want to copy a file from applejack to pinkie-pie, so to avoid dealing with port forwarding and such, I set up an ssh tunnel from pinkie-pie to cadance (ssh -R etc cadance). Now I can connect to pinkie-pie from anywhere, by connecting to cadance and specifying an alternate port to use. I can also easily copy files to pinkie-pie with scp -P $that_port $some_file cadance:$some_path. My understanding of how it works is this: A secure connection is made from applejack to cadance I am authenticated to cadance A secure connection is made from applejack to pinkie-pie that spans the existing reverse tunnel and the new connection from step 1. I am authenticated to pinkie-pie Files are copied directly from applejack to pinkie-pie over this connection. Am I correct here? How secure is this approach? If I'm wrong…are files copied this way decrypted at cadance before being passed on to pinkie-pie? Is there a possibility that traces of unencrypted data could remain on cadance?

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  • Securely wiping a file on a tmpfs

    - by Nanzikambe
    I have a script that decrypts some data to a tmpfs, the directory is secure (permissions), the machine's swap is encrypted (random key on boot) and when the script is done it does a 35 pass wipe (Peter Gutmann) of the cleartext on the tmpfs . I do this because I'm aware wiping files on a journaling file system is insecure, data may be recovered. For discussion, here're the relevant bits extracted: # make the tmpfs mkdir /mnt/tmpfs chmod 0700 /mnt/tmpfs mount -t tmpfs -o size=1M tmpfs /mnt/tmpfs cd /mnt/tmpfs # decrypt the data gpg -o - <crypted_input_file> | \ tar -xjpf - # do processing stuff # wipe contents find . -type f -exec bcwipe -I {} ';' # nuke the tmpfs cd .. umount -f /mnt/tmpfs rm -fR /mnt/tmpfs So, my question, assuming for the moment that nobody is able to read the cleartext in the tmpfs while it exists (I use umask to set cleartext to 0600), is there any way any trace of the cleartext could remain either in memory or on disk after the snippet above completes?

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  • How good is PDF password protection?

    - by Tim
    It appears that Word's password protection is not really good, at least until Office 2003, if I read this SU entry correctly. I'm under the impression that Acrobat's PDF password protection should be better (it says 128-bit AES for Acrobat 7 and higher). Is that true? Of course, it depends on the strength of the password used, but assuming I protect my PDF with a password like sd8Jf+*e8fh§$fd8sHä, am I on the safe side? Like, say, for sending confidential patient information - not really valuable, but potentially highly sensitive.

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  • Software to store my password on a crypted file and access it through another password

    - by Fire-Dragon-DoL
    I'm looking for a software that allows me to store some passwords in something like "a text file", access it through a password, read my passwords if required and close it again. I want something really straightforward, double click on file, right click "Add new password", add password, description and close. The file must be really secure, I'll store all my passwords there. I know about some command line solutions but I want my setup to be really fast on reading. Do someone know if such a software exist and can point me in the correct direction? I would like to find it freeware, but I'm ok with some low cost tools too.

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  • Mac questions: installing TrueCrypt and Windows 7

    - by KeyStroke
    Hi, I'm about to buy a Mac laptop, but I need to be able to use Windows 7 as well + encrypt the HDD with TrueCrypt (or a better alternative for the mac). My questions are: 1) How well does Windows 7 perform under boot camp? 2) Will I be able to encrypt the whole HDD (with TrueCrypt or whatever else) and still use boot camp to dual-boot? Your help is much appreciated

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  • Detecting a TPM chip?

    - by Danielb
    I have a HP Mini 311-1000CA netbook running Windows 7 Ultimate. I'd really like to encrypt the harddrive using BitLocker but I am unsure as to how to work out if the Mini has a TPM chip or not. Any ideas?

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  • convert .p7b key to a .pfx

    - by DrStalker
    I have an SSL certificate in .p7b format that I need to convert to .pfx. If I try this through the windows certificate managment the option to expert as a .pfx is disabled. Trying with openssl I have found the following two commands to do the conversion: openssl pkcs7 -print_certs -in certificate.p7b -out certificate.cer openssl pkcs12 -export -in certificate.cer -inkey privateKey.key -out certificate.pfx -certfile CACert.cer but I'm not sure what key to use for teh esecond command, or what certificate CACert.cer refers to. How can I convert this key to .pfx format?

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  • IPSec for LAN traffic: Basic considerations?

    - by chris_l
    This is a follow-up to my Encrypting absolutely everything... question. Important: This is not about the more usual IPSec setup, where you want to encrypt traffic between two LANs. My basic goal is to encrypt all traffic within a small company's LAN. One solution could be IPSec. I have just started to learn about IPSec, and before I decide on using it and dive in more deeply, I'd like to get an overview of how this could look like. Is there good cross-platform support? It must work on Linux, MacOS X and Windows clients, Linux servers, and it shouldn't require expensive network hardware. Can I enable IPSec for an entire machine (so there can be no other traffic incoming/outgoing), or for a network interface, or is it determined by firewall settings for individual ports/...? Can I easily ban non-IPSec IP packets? And also "Mallory's evil" IPSec traffic that is signed by some key, but not ours? My ideal conception is to make it impossible to have any such IP traffic on the LAN. For LAN-internal traffic: I would choose "ESP with authentication (no AH)", AES-256, in "Transport mode". Is this a reasonable decision? For LAN-Internet traffic: How would it work with the internet gateway? Would I use "Tunnel mode" to create an IPSec tunnel from each machine to the gateway? Or could I also use "Transport mode" to the gateway? The reason I ask is, that the gateway would have to be able to decrypt packages coming from the LAN, so it will need the keys to do that. Is that possible, if the destination address isn't the gateway's address? Or would I have to use a proxy in this case? Is there anything else I should consider? I really just need a quick overview of these things, not very detailed instructions.

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  • TrueCrypt Failing to Decrypt External Hard Drive after changing Enclosures

    - by Anx Ara
    I have a 4TB external hard drive that was previously encrypted using TrueCrypt. The power source on the hard drive enclosure failed, so I had to switch the hard drive itself into a new enclosure. I can no longer decrypt the hard drive using TrueCrypt, as it says my password is wrong. I am certain that I entering the correct password. Additionally, in TrueCrypt, when I try to mount the volume under "Select Device", it shows the following: Harddisk 5: 3.6TB Device\Harddisk5\Partition 1 H: 465GB Whereas before I changed the enclosure it would show: Harddisk 5: 3.6TB Device\Harddisk5\Partition 1 H: 3.6TB I am on a Windows 8 PC and using TrueCrypt 7.1a. How can I get it to decrypt properly?

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  • why is rdiff-backup not compatible with encfs ---reverse

    - by user330273
    I'm trying to use encfs with rdiff-backup to ensure that my backups to a remote server are encrypted. The easiest way to do this would be to use encfs --reverse - which means encfs will create a virtual encrypted file system, which I can then backup using rdiff-backup. Except that it doesn't work. Rdiff-backup fails every time with an "input/output error" on the encfs virtual filesystem. It seems I'm not the only one with this problem, but no one has said what the problem is: this person reported the same issue, but was just told to use sshfs instead (see below on that); in this question on serverfault, one of the answers just states that "rdiff-backup seems to have trouble accessing the EncFS-reverse filesystem." There's an open bug report on the Debian bug tracker(bug 731413, I can't post the link) on this bug, but it's been open since December 2013 with no response. Does anyone know what the problem actually is? Is there a workaround? I can't use the two most commonly suggested alternatives - sshfs and then running encfs on that, or using Duplicity - as both require a much higher bandwidth connection than I have access to (Duplicity requires regular full backups).

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  • Mac OSX Server: svn via ssh command line and encrypted passwords.

    - by Ben Clayton
    Hi all. When I log into our mac mini server running OSX 10.6 via ssh and use svn I get the message: ATTENTION! Your password for authentication realm: can only be stored to disk unencrypted! You are advised to configure your system so that Subversion can store passwords encrypted, if possible. See the documentation for details. You can avoid future appearances of this warning by setting the value of the 'store-plaintext-passwords' option to either 'yes' or 'no' in '/Users/xxxxxxxx/.subversion/servers'. I dont' want to store the password unencrypted though. I've found some details on how to use GNOME keychain in linux to sort this, but nothing on how to use macosx's keychain. Anyone got any ideas? Thanks a lot!

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  • Decrypt column in SQL 2008

    - by Paul
    I need to decrypt a column in a table that has previously been encrypted at application level. The algorithm is DES at 192 bits and block size = 64. I have the password but DecryptByPassPhrase doesn't seem to work.

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  • Is it possible to re-lock a bitlocker drive?

    - by Sean Edwards
    I'm running a partition with bitlocker on a Windows 7 Ultimate machine, which contains secure data that I have to recover infrequently. Unlocking it to access the data is obviously no problem, but is there a way to re-lock the partition when I'm done? The best I've found so far is this: http://social.technet.microsoft.com/Forums/en-US/w7itprosecurity/thread/41607938-7452-440d-8253-67fe8657bc0f Currently I have a .bat script on that drive that I can run as administrator, and that re-locks the drive, but it feels like kind of a hackish solution. Does anyone have anything better? Any idea when Microsoft might release a fix for this?

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  • Setting up 802.1X wireless connection on OSX

    - by hizki
    I am an OSX user, I have Snow Leopard 10.6.5 and an updated AirPort. I am trying to connect to my university's wireless network, but it has a complex security that I am having trouble defining... Here there are instructions for connecting with Windows XP, Windows 7 and Linux. Can someone please instruct me what should I do to set up this network on my MAC? Thank you. P.S. I have had previous success in setting up this network, but I have no idea what I did that made it work. Since I updated my AirPort it worked only seldomly and very slowly... Before the update, even when it worked it never remembered my password.

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  • Encrypt uploaded pdf files with mcrypt and php

    - by microchasm
    I'm currently set up with a CentOS box that utilizes mcrypt to encrypt/decrypt data to/from the database. In my haste, I forgot that I also need a solution to encrypt files (primarily pdf, with a xls and txt file here and there). Is there a way to utilize mcrypt to encrypt uploaded pdf files? I understand the possibility of file_get_contents() with txt; is a similar solution available for other formats? Thanks!

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  • How to encrypt disk transparently without destroying data

    - by aseq
    On a Linux system, be it Debian, Redhat or any distro, I would like to encrypt the disk on the fly. That is, encrypt the disk transparently to the OS whilst it is running, reboots, shuts down etc. In addition it should not destroy data. I know there is (commercial) software for windows that does it. But I need a Linux solution. The solutions I know of do not support this as far as I can see (luks, truecrypt...). Maybe there is some hack or work around available?

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  • Decrypting Windows XP encrypted files from an old disk

    - by Uri Cohen
    I had an old Windows XP machine with an encrypted directory. When moving to a new Win7 machine I connected the old disk as a slave in the new machine, and hence cannot access the encrypted files. Chances don't seem good as documentation warns you: "Do not Delete or Rename a User's account from which will want to Recover the Encrypted Files. You will not be able to de-crypt the files using the steps outlined above." On the other hand, I have full access to the machine, so maybe there's a utility which can extract the keys and use the to decrypt the files... BTW, I didn't have a password in the old machine, if it's relevant. Ideas, anyone? Thanks!

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