GENERAL INFORMATION ABOUT REPOSITORY

• This repo contains PRESENT block cipher encryption algorithm implemented in C language.
• For using over block size messages, CBC mode implemented.
• Run the implementation by using given run.sh bash script. ./run.sh
• Question 1 to 3 will be automaticaly run and will be print the result in terminal.
• 64MB of data initilized as 0.
• User may rewrite the main code to use vanilla.
• Created by Arda CEKIC

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PERFORMANCE COUNTER ON 64MB DATA ENCRYPTON

• On MacBook Pro (13-inch, 2022) Apple M2 @ 3.5 GHz (8 cores) it takes nearly 5 minutes to do encryption of 64MB of data . (4min43sec)

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One sample for question report:

ardacekic@Ardas-MacBook-Pro c_code % ./run.sh                                                             
The current start time is: Sun Jan 14 01:11:23 +03 2024
gcc -Wall main.c -o main

Calculating Question One 
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Given Key : 00 00 00 00 00 00 00 00 00 00 
Given Plaintext : 0
Resulting Ciphertext : 5579c1387b228445
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Calculating Question Two 
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Given HEX string with Proper Padding 10*
array[0] = 0x417264612043656b
array[1] = 0x6963800000000000
CBC Resulting Ciphertext
ciphertext 0 : 140ba5595b61e12e 
ciphertext 1 : f78427afcb351681 
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Calculating Question Three 
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CBC 64MB Encrypton is started Padding is not issued...
CBC 64MB is done...
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The current finish time is: Sun Jan 14 01:16:08 +03 2024