Text Encryption Method Using multi Hyper-chaotic systems

Abstract

With rapid evaluation of technologies, huge amount of critical information can exchange over unsecure network every day, secure and fast encryption schemes become more and more urgent need to provide the desirable confidentiality and thwart unauthorized access, lately and for many reasons, chaotic based encryption algorithms become more and more popular technique due to exceptionally superior characteristics such as simplicity, resistance attacks and high speed, in this paper the advantages of two nonlinear hyper-chaotic systems will utilized to strength the proposed encryption algorithm, the random sequences generated from systems will used to position scramble and value change of the plaintext, the main features of such method are efficiency, large key space, low computational overhead, and simple design as well as the experimental results demonstrate that the proposed method have more ability to thwart attacks.

Chaos-Based Cryptography: Text Encryption Using Image Algorithms

“…A similar encryption process was used in [20,21] where a new encryption algorithm was presented based on a chaotic dynamic system, a pseudo-random number generator, and an XOR operation. The XOR operation was also used in [22] to encrypt text with some pseudo-random string. In [23], the authors presented a text-encryption algorithm that, in addition to a chaotic arrangement, also used DNA sequences to encrypt text messages.…”

“…First, some of the above works turned out to be unsafe, as demonstrated by the cryptanalysis techniques appearing in the literature [6]. On the other hand, some of the work on encrypting text using chaos has a fairly simple structure (e.g., XOR substitution, e.g., [22]), which may also lead to breaking such ciphers in the future. These and other reasons have drawn the attention of researchers to the use of chaos to encrypt images.…”