PENGEMBANGAN METODE BEAUFORT CIPHER MENGGUNAKAN PEMBANGKIT KUNCI CHAOS

Publication Type:

Journal Article

Source:

Jurnal Teknologi, Volume 7, Number 1 (2014)

Keywords:

beaufort cipher, chaos function, cryptography

Abstract:

Cryptography world have implemented a variety of methods for encoding messages today. The more complicated the method used, the resulting level of security would be better. In order to increase the level of security in the cryptographic algorithms, chaos theory is used. The chaos theory is a branch of mathematics that studies how to generate random numbers.Chaos theory is very sensitive to the initial value (initial condition), it is very useful and can be applied in the world of cryptography to generate a random key that will be processed as a tool in the process of encryption and descryption. More random numbers are generated, the better the security level of a ciphertext.
This study specifically discusses/investigates how chaos theory applied for encoding using beaufort cipher encryption methods to increase the security on the keywords used. Based on the results of tests performed on the tested images show that the beaufort cipher algorithm using a key generated using chaos functions proved to be effective and safe.This is evidenced/proved by the average processing time required to perform the encryption and descryption process is quite fast which is about 0.7 seconds. And visually based testing and statistical test used encryption algorithms cannot provide any clues to do statistical attack by cryptanalist.

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