Kira and Misao sent you a sample group encryption message SESSID$||$C encrypted with a

sample group session key gsk$,$ using the OpenSSL cryptographic tool. The gsk and group

encryption messages are available in Moodle.

Write a response email to Kira and Misao explaining how you tested decryption of the group

encryption message. Include in your response:

$5$

$$ your explanation of the decryption method that you used to test the decryption by each group

member$$s PeerHelper app,

$$ a block diagram of the decryption method supporting your explanation,

$$ in the diagram, indicate the inputs parsed from the given encrypted message together

with their corresponding size in bits, and the flow of the block cipher CTR mode

operations $($including any XOR operations$),$ showing the number of decrypted blocks

and what information is in each block.

$$ your decrypted values of session ID$,$ sender ID$,$ and message obtained from the sample

encrypted message using appropriate commands,

$$ Your reasoning for the number of decrypted blocks used and their sizes, given the length of m$,$

$$ screenshots of your linux commands for parsing SESSID$||$C into the relevant information and

OpenSSL commands in your decryption process. Explain how you obtained each value.