Advanced approach for encryption using advanced encryption standard with chaotic map

Abstract

At present, security is significant for individuals and organizations. All information need security to prevent theft, leakage, alteration. Security must be guaranteed by applying some or combining cryptography algorithms to the information. Encipherment is the method that changes plaintext to a secure form called cipherment. Encipherment includes diverse types, such as symmetric and asymmetric encipherment. This study proposes an improved version of the advanced encryption standard (AES) algorithm called optimized advanced encryption standard (OAES). The OAES algorithm utilizes sine map and random number to generate a new key to enhance the complexity of the generated key. Thereafter, multiplication operation was performed on the original text, thereby creating a random matrix (4×4) before the five stages of the coding cycles. A random substitution-box (S-Box) was utilized instead of a fixed S-Box. Finally, we utilized the eXclusive OR (XOR) operation with digit 255, also with the key that was generated last. This research compared the features of the AES and OAES algorithms, particularly the extent of complexity, key size, and number of rounds. The OAES algorithm can enhance complexity of encryption and decryption by using random values, random S-Box, and chaotic maps, thereby resulting in difficulty guessing the original text.

A Novel 3-D Jerk System, Its Bifurcation Analysis, Electronic Circuit Design and a Cryptographic Application

“…We vary the values of R 3 to obtain different phase portraits for the circuit model (15). It is easy to see the good agreement between the MATLAB plots of the jerk system (4) and the simulation results of the circuit (15).…”

“…The following Figure 16 shows the various phase portraits of circuit (15) illustrating the route to chaos, where the initial values are taken as Z(0) = (0.3, 0.2, 0.3).…”

“…Chaotic systems find a wide range of engineering applications such as memristors [1][2][3][4], laser systems [5][6][7], electrical circuits [8][9][10], neural networks [11,12], encryption [13][14][15], memristors [16], neuron models [17], etc. As a particular case, a third-order autonomous jerk differential equation has the general form ... = F( , ˙ , ¨ )…”

Implementing and developing multi-stage cryptography technique for low-cost long-range communication system

“…Without the private key, no one else can view the message's content. Using the same private key, the intended recipient can decrypt the message and restore it to its original format [16], [18], [20]- [24]. Examples of symmetric keys include advanced encryption standards (AES), blowfish (BF), and data encryption standards (DES).…”

“…Its superiority lies in its capability to support a wide range of key lengths, which adds an additional layer of protection against malicious attacks. The AES employs keys that are 128, 192, and 256-bit in length, with 10, 12, and 14 rounds of encryption, respectively, as outlined in [24]. The algorithm comprises three layers, with each layer performing a specific mathematical function.…”