Security of data transmission using logic gates and crypt analysis

In the following paper, we are encrypting and decrypting data using 74xx logic gates. In this process a key is generated which when encapsulates with the data, makes it in encrypted form called cipher text. Then same key is used to decrypt the data. The concept used for key generation is cellular automation, and then bit by bit passing into 8:1 MUX via 2:1 MUX from where the final key is generated. The key after use is also feedback in order to maintain the randomness of our key. The advantage of this process is that the hardware resources used here are cheaper and can be easily implemented. The future scope of this process is that other secure and more complex algorithms can be implemented through this method.