Question 28 Not yet answered Marked out of 8.00 Flag question Use CryptTool to perform the following tasks: 8 mark Instruction: - take a screenshot for each step and save in one PDF file, then Submit all required files along with the PDF file. a) Generate a pair of keys for yourself, Use your real name and set the pin to 123. 7 mark b) Export your public key and save it as [ID_key]. 7 mark c) Write a message to me, sign it and then encrypt it using hybrid encryption. Save the encrypted message as "Enc_MSG". 2 marks d) Submit your public key, the encrypted message and PDF file contains all steps. e) Add the provide key in the Moodle "FExam_pkey" to the program (pin=123). 1 mark f) Decrypt the provide message in the moodle "Exam_msg" using the imported key "FExam_pkey": 1 marks g) What is content of the message? 0.5 mark h) Who signed the message? 0.5 mark D When the document signed? 0.5 mark j) What is the length of the message? 0.5 mark Question 25 Compare between Block Cipher modes of operations in term of the following criteria: Not yet answered Marked out of 4.00 Application Encryption Initialization Vector Flag question Cipher FeedBack (CFB) Output FeedBack (OFB) Counter (CTR) 20 I !!! III E HI of c