International Journal of Applied Information Systems (IJAIS)
Key size of an algorithm is an important aspect of cryptographic technique as high key bits is considered more secure than low key bits. Different research work has been conducted to have secure and reliable protection techniques for transmitting data over a communication networks. This paper shows the effects of varying the key size on Advanced Encryption Standard (AES) algorithm for encryption of data. AES algorithm with key sizes of 128-bits, 192-bits and 256-bits were considered.