This repository contains a C implementation of Simplified AES (SAES) encryption and decryption algorithms. The code provides functionality to encrypt and decrypt 16-bit data using a 16-bit key.
SAES.c- Contains the SAES implementation.SAES.h- Header file for SAES with function declarations and necessary definitions.SAES_test.c- Test harness for the SAES implementation.
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Educational Focus: The code emphasizes clarity and simplicity, serving as an educational resource for understanding the fundamental concepts of AES encryption.
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Command-Line Interface: Includes a user-friendly command-line interface for effortless encryption and decryption of data using custom keys, enhancing usability and accessibility.
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Modular Architecture: Utilizes a modular structure with separate functions for key expansion, substitution, and mixing columns. This design choice promotes readability and allows for easy expansion or modification.
Clone this repository:
git clone https://github.com/mostsfamahmoud/Simplified-AES.git
cd Simplified-AES/To compile the code, use a C compiler such as GCC:
gcc SAES.c SAES_test.c -o SAES_test.exeThe provided test cases can be executed using the batch file run_mytestcases.bat:
./run_mytestcases.batThis batch file reads test cases from mytestcases.txt, executes the SAES test program with the given parameters, and displays the results.
The test cases cover various scenarios of encryption and decryption with valid and invalid inputs.
- Each test case format: Operation Key Data
- Operations:
ENCfor encryption,DECfor decryption. - Key and Data should be 4-character hexadecimal strings.
- Invalid inputs will display error messages.
Example test cases and their expected output:
ENC A73B 6F6B -> C2AA
DEC AB89 -> ERROR: Invalid number of parameters
...If you have any feedback, please reach out to me at mostafamahmoud.cse@gmail.com
