SEC 280 Week 3 Assignment Help | Devry University
Week 3 assignment
Week 3: exercise - asymmetric encryption
We installed CrypTool version 1.4.41 in Week 2. If you uninstalled CrypTool, you will need to reinstall the software as you did in Week 2.
First, launch Cryptool. Click on File from the top menu bar and select New. Type "This is a test" (without the double quotation marks) at least five times in the blank window.
Click Encrypt/Decrypt from the top menu bar, click Asymmetric, and select RSA encryption.... In the "selection of a key for RSA encryption of" window, select the only option available (this is a user profile): SideChannelAttack, and click on Encrypt. The RSA-encrypted text will be displayed. Capture the screen and paste the screenshot in a Word document Sec280Week3_Template.docx (Links to an external site.).
Next, we are going to create our own key pair instead of using an existing user profile. Note that asymmetrical encryption uses one key to encrypt (public key) and another key to decrypt (private key).
Click on Digital Signature/PKI from the top menu bar, select PKI, and choose Generate/Import keys.... Complete the template in the "Generation of Asymmetric Key Pair" window as follows. Select RSA and 1024 for bit length. Fill in the User Data section on the right. Remember to enter a PIN because every time we decrypt, we use the PIN to access the key pair. Capture the "Generation of Asymmetric Key Pair" window with your input and paste the screenshot in your Word document (SEC280Week 3 Template.docx). Click on Generate new key pair..., and wait for a pop-up window with the "The parameters chosen by you and the new key pair have been successfully saved" message. Click OK to close the pop-up window. Click Close to exit the "Generation of Asymmetric Key Pair" window.
Now click on Encrypt/Decrypt from the top menu bar, select Asymmetric, and RSA Encryption.... You will see your profile on the "Choose the recipient:" list. Capture this screen and paste the screenshot in your Word document (Week 3 Template.docx). This profile will be used in Week 4's exercise next week. Close the pop-up window.
Lastly, let's look at a demonstration of RSA encryption. Click on Encrypt/Decrypt from the top menu bar, select Asymmetric, and RSA demonstration.... RSA uses two prime numbers to generate the public key and private key. In the "Prime number entry" section of the window, enter a prime number (e.g., 13) for p and another prime number for q (e.g., 7). Notice how numbers in the "RSA parameters" section change when you enter a different prime number. Capture the screen and add the screenshot to your Word document (Week 3 Template.docx). In the middle of the same window, click on the Alphabet and number system option... button. In the "RSA Demonstration Options" window, check Specify alphabet: in Alphabet options. Check Normal in RSA variant. Check Decimal in Number system. Click OK to close the window.
Now back to the "RSA Demonstration" window. In the "RSA encryption using e / decryption using d" section, enter a message "THISISATEST" without the double quotation marks in the input row. Click on Encrypt. Capture this screen and paste the screenshot in your Word document (SEC280Week 3 Template.docx).
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