itp125 - lab 4 - working with a encryption

itp125 - lab 4 - working with a encryption - ITP 125 ...

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Unformatted text preview: ITP 125 Lab 4 – Additional Network Commands Due: 10:59AM before the next lab. Submission: email: chi.h.so@gmail.com subject: ITP 125 – Lab 4 Include your real name (last and first), and USC email address in the submission. If you don’t the grader will have a hard time grading you. Create a fake email address for this lab; such as Gmail/Hotmail/Yahoo, or anything that will work with Mozilla Thunderbird. Turn in just the submission from the practical Working with a Symmetric Key Encryption 1. If TrueCrypt is not install, download it from here: http://www.truecrypt.org/downloads Then proceed to install it • Use the “Install” method when asked for the type of installation • For the “Setup Options”, uncheck “Create System Restore Point” • You may skip “Please consider making a donation” • Highly recommended to read the “Beginner’s Tutorial”, but you can skip it 2. Start up TrueCrypt • Start à༎ All Programs à༎ TrueCrypt à༎ TrueCrypt 3. We’re going to create container that will hold all the files that we want to encrypt. • Click on “Create Volume” button • Select “Create an encrypted file container” • press “Next” • Select “Hidden TrueCrypt volume” • We are making a container that has 2 passwords. So that if you are forced to reveal the container you can hide other junk in there • Select “Normal mode” then press “Next” • Under “Volume Location” • press the “Select File…” button. • Select the “Desktop” • Create a new file called “itp125”, then pressed “Save” • Press “Next”, when you return to the “Volume Location” dialog • On the “Outer Volume” dialog • press “Next” • Set the following settings before continuing • Encryption Algorithm: AES • Hash Algorithm: RIPEMD- 160 • Press “Next” when everything is set • On the “Outer Volume Size”, choose 1 MB, then press “Next” • On the “Outer Volume Password” • choose any password you can remember • Note: The outer volume is going to be the container that stores stuff that you don’t care to lose • Press “Next” when you turned in the password • On the “Outer Volume Format” • move the mouse a little bit • press “Format” 4. Now let’s put some files into the container that we don’t care much for • On the “Out Volume Contents” • Download an image from the internet that is less than 500 Kbytes in size • Click on the button “Open Outer Volume” • Drag the image you downloaded into the volume • Go back to the dialog and press “Next” 5. Let’s create a hidden volume and put some files in there • On the “Hidden Volume Encryption Options” • Encryption Algorithm: AES • Hash Algorithm: RIPEMD- 160 • Press “Next” when everything is set • On the “Hidden Volume Size”, set the size of the volume to be 200 Kbytes, then press “Next” • On the “Hidden Volume Password” • Choose any password that you can remember • Note: Use a strong password here, cause this is where you are really hiding your files • On the “Hidden Volume Format” • Move the mouse a little • Press “Format” to continue • When a dialog windows opens, press “Ok” • On the “Hidden Volume Created”, just press “Next” • You will now be restarted to the beginning of the wizard, you can press “Cancel” to close the wizard 6. Starting the hide some files • In the TrueCrypt main window • Press the “Select File” button, and select the itp125 files that you created on the Desktop • Select the lowest letter drive that you can see on the top of the window, then press the “Mount” button • Type in your password for the hidden volume • Open that drive letter in Windows Explorer 1. Put any files you would like to hide Working with Asymmetric Encryption 1. Download and install Gpg4win: http://www.gpg4win.org/download.html Note: Just use all default options during the install when you get to the “Define trustable root certificate”, go ahead and check the box and press “Next” 2. Startup Kleopatra • Start à༎ All Programs à༎ Gpg4win à༎ Kleopatra 3. Add a new OpenPGP server • Settings à༎ Configure Kleopatra • Under the “Directory Services” tab , press the “New” button” • Change the server to the following: pgp.mit.edu • Press “Apply” à༎ Press “Ok” 4. Create a new certificate • File à༎ New Certificate à༎ Create OpenPGP key pair Fill in the information as best as you can. Note: you need to put a first and last name 5. Upload your new key to the server • Click on the “Trusted Certificates” tab • Right click the certificate you created • Select “Export Certificates to Server” 6. Download and install Thunderbird • https://www.mozilla.org/en- US/thunderbird/ 7. You can choose to create a new Gmail account, or use the one you already have 8. Startup Thunderbird and follow the wizard • Note: It you’re using your gmail account, use IMAP for the settings 9. Install the setup Enigma • Tools à༎ Add- ons à༎ Search for and install “Enigma” à༎ restart Thunderbird 10. Setup OpenPGP for Thunderbird • OpenPGP à༎ Setup Wizard • For “Signing”, you will select “Yes, I want to sign all my email” • For “Encryption”, you will select “No, I will create per- recipient rules for those that sent me their public key” • For Preferences”, select “No, thanks” • For “Key Selection”, select the key that you already created 11. Import the instructor key from the keyserver • Open Kleopatra • Click on “Look for Certificates on Server” • Search for “Tommy Trojan” • Select the certificate valid from ”2012- 02- 21” • Click on “Import” 12. Send an encrypted email to the instructor • Open up Thunderbird • Click on “Write” • Subject: ITP 125 - Lab 4a • Message: Just testing (include your real name and USC email address) • To: The instructor’s email address • Click on “OpenPGP” • Mark sure “Sign Message” is check • Check “Encrypt Message” • When all is set, click on “Send” and follow the instructions on the screen Practical 1. Create a new container with a hidden volume with a size of 500 Kbytes 2. Put a very questionable image that is less than 250 Kbytes in the outer container. Keep the image SFW (safe for work). Note: Use any password you like for the outer volume 3. In the hidden container place, do the following: • Ubuntu torrent (any version will do) • http://www.mediafire.com/?74qrm2h4oof17o7 Note: You may use any password for the hidden volume 4. Send an encrypted email to the instructor with the outer/inner password as the body of the message. • To: The instructor’s email address • • • • Subject: ITP 125 – Lab 4b Message: The passwords for both outer/hidden volumes, name, USC email Attachments: The TrueCrypt volume that you created for this practical When prompted after pressing the “Send” button select: “Encrypt/Sign each attachment separately and send the message using inline PGP” ...
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