We live in a world where the Internet has become the backbone of most of our dealings. The Internet has turned this big planet into a small village. The internet can be reached by everyone, everywhere, and anytime. Some authors predict that the number of various types of devices capable of connecting via the Internet will reach 75.44 billion by 2025. These devices vary from low processing power processors to heavy processing power processors. It often requires the protection of mobile data between devices, these devices that have limited energy and resources require the protection technology to be adapted
This paper gives complete guidelines for adapting the original Data Encryption Standard Algorithm (DES) and make it more secure and better performance than existing standard encryption algorithms, such as Advanced Encryption Standard (AES). The proposed approach improves the original DES security by extending the key size of DES without affecting the cost of DES. The new algorithm is called DES22, and it is convenient for low processing power devices, such as wireless sensors. DES22 has three variants for key size: 128 bits, 256 bits and 512 bits. The paper also proposes another improvement to DES through random permutation and the distribution of the initial permutation and final permutation tables between the encryption and decryption algorithms. The experiment results show that DES22 is more secure and faster than AES.
Key words: Data Encryption Standard, DES, Advanced Encryption Standard, AES, IOT.
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