VLSI Implementation of Hybrid Cryptography Algorithm Using LFSR Key

Abstract

The security and confidentiality of the information has become a significant factor in the communication field. Several techniques for encryption and decryption are proposed to promote the security of the communication systems. Most powerful and significant part of the encryption is a key generation. Presently, hackers are able to break the key with help of the modern high computing machines. In this research, hybrid cryptographic algorithm -Extended Tiny Encryption Algorithm (XTEA) combined with International Data Encryption Algorithm (IDEA) was implemented for improving the security in real-time applications. A large key size ensures the randomness, but proportionally maximizes the network load with high complexity. To overcome this problem, the random numbers were generated using a Linear Feedback Shift Register (LFSR) scheme for key function. This algorithm was appropriate for encryption and decryption of online streaming data. The proposed method is named as International Data -Extended Tiny based Encryption Algorithm -LFSR (ID-XT-EA-LFSR) method. The ID-XT-EA-LFSR method improves the FPGA performances up to 50.43% compared to the QTL, DROM-CSLA-QTL and XTEA algorithms.

Designing New AES and Implementing it with LFSR Key to Improve Data Security

“…Generally, cryptographic methods consist of fundamental components such as plain text, cipher text, key and cryptographic algorithm. Enhancing the privacy of the information against unauthorized access is the major objective of the cryptographic mechanism [5]. The main goal of cryptography is to make our information confidential.…”

Real-time FPGA implementation of concatenated AES and IDEA cryptography system

“…IDEA has proven immune in certain conditions, and it has not revealed algebraic or linear weaknesses [26][27][28]. In 2005, advanced packet exchange technology (APEX) proclaimed that IDEA algorithm outperformed many encryption algorithms which are being used nowadays by several governments and European countries [29,30].…”