Combination of Hybrid Chaotic Encryption and LDPC for Secure Transmission of Images over Wireless Networks

Abstract

Robust and secure transmission strategy for high quality image through wireless networks is considered a great challenge. However, the majority of encrypted image transmission schemes don't consider well the effect of bit errors occurring during transmission. These errors are due to the factors that affect the information such as noise and multipath propagation. That should be handled by an efficient channel coding scheme. Our proposed scheme is based on combining hybrid chaotic encryption, which is based on twodimensional chaotic maps which is utilized for data security, with an error correction technique based on the Low Density Parity Check (LDPC) code. The LDPC is employed as channel coding for data communication in order to solve the problem of the channel's limited bandwidth and improve throughput. Simulation results show that the proposed scheme achieves a high degree of robustness against channel impairments and wide varieties of attacks as wells as improved reliability of the wireless channel. In addition, LDPC is utilized for error correction in order to solve the limitations of wireless channels.

Neural Crypto-Coding Based Approach to Enhance the Security of Images over the Untrusted Cloud Environment

“…In their work, Mona F. M. Mursi et al [12] combined hybrid chaotic encryption with LDPC. The image is transformed by applying FRFT and then encrypted using an Arnold cat map for confusion and a Hénon map for diffusion.…”

“…The output of the tenth round is the desired ciphertext that needs to be stored in the cloud. Table 2 gives the details of parameters used for AES-LDPC cryptcoding [12,13].…”