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Switching between the AES-128 and AES-256 Using Ks * & Two Keys


Moceheb Lazam Shuwandy, Ali Khalil Salih, Firas layth Khaleel, Adib M.Monzer Habbal


Vol. 10  No. 8  pp. 136-140


This paper proposes a method to switch between the AES-128 and the AES-256 encrypters by using special key that is to determine the process sequence. To encrypt the information, the user must provide the two keys (K1, K2) of the recipient as well as the message to be encrypted. This method can make it reduces a period of the time, especially in saving the hardware resource in implementing the AES 256 bit module and AES 128 bit module. Most designed modules can be used for both AES encryption and decryption. Besides, the architecture can still deliver a high data rate in both encryption and decryption operations. Therefore, we take advantage of the power from AES-265, and speed from AES-128. Therefore, at least one complexity by three to increase the speed, and speed will increase at least one by three of complexity. The proposed architecture is suited for hardware-critical applications and Network applications, such as using the chatting to exchange the secret messages, etc.


Switching, Ks, SDA, K1, K2