Cryptography Refresher

In this upcoming activity, you will use your key and IV that you had created in the previous class and saved into a file called key$\_$and$\_$IV$.$

You will continue to act as a security analyst working for the Hill Valley Police Department.

Captain Strickland has moved a meeting to $6$pm and would like you to notify your partner of this change.

As secrecy is still critical, your task is to write an updated message and encrypt it with OpenSSL.

Next, send the encrypted message to your partner with your key and IV $($initialization vector$),$ and decrypt the message you receive from your partner.

Instructions

Choose a partner, preferably the same partner as in the previous class.

Write an updated message using your code name, indicating the meeting is now at $6$pm at Lou's Cafe.

Encrypt the message with OpenSSL.

Send the encrypted message to your partner with the key and IV$.$

Once you received your partner's encrypted message, key, and IV$,$ decrypt it with OpenSSL.

After decrypting your partner's message, answer the following questions:

What method did you use to transfer the key and IV$?$

Is this a secure method for transmitting the key and IV$?$ Why or why not?