Biblio

With the deep research on coherent optical OFDM offset quadrature amplitude modulation OFDM/OQAM in these years, and the communication system exposed to potential threat from various capable attackers, which prompt people lay emphasis on encryption methods for transmission. Therefore, in this paper, we systematically discuss an encryption project with the main purpose of improving security in coherent optical OFDM/OQAM (CO-OFDM/OQAM) system, and the scheme applied the chaotic constellation scrambling (CCS) which founded on chaotic cross mapping to encrypt transmitted information. Besides, we also systematically discuss the basic principle of the encryption scheme for CO-OFDM/OQAM system. According to numerous studies and analysis on experiment data with caution, such as the performance of entropy, bit error rate (BER). It's conforms that the security of CO-OFDM/OQAM system have been enhanced.

Wireless Sensor Networks (WSNs) utilizes many dedicated sensors for large scale networks in order to record and monitor the conditions over the environment. Cluster-Based Wireless Sensor Networks (CBWSNs) elucidates essential challenges like routing, load balancing, and lifetime of a network and so on. Conversely, security relies a major challenge in CBWSNs by limiting its resources or not forwarding the data to the other clusters. Wireless Sensor Networks utilize different security methods to offer secure information transmission. Encryption of information records transferred into various organizations thus utilizing a very few systems are the normal practices to encourage high information security. For the most part, such encoded data and also the recovery of unique data depend on symmetric or asymmetric key sets. Collectively with the evolution of security advances, unfruitful or unauthorized endeavors have been made by different illicit outsiders to snip the transmitted information and mystery keys deviously, bother the transmission procedure or misshape the transmitted information and keys. Sometimes, the limitations made in the correspondence channel, transmitting and receiving devices might weaken information security and discontinue a critical job to perform. Thus, in this paper we audit the current information security design and key management framework in WSN. Based on this audit and recent security holes, this paper recommends a plausible incorporated answer for secure transmission of information and mystery keys to address these confinements. Thus, consistent and secure clusters is required to guarantee appropriate working of CBWSNs.

Network security and data confidentiality of transmitted information are among the non-functional requirements of industrial wireless sensor networks (IWSNs) in addition to latency, reliability and energy efficiency requirements. Physical layer security techniques are promising solutions to assist cryptographic methods in the presence of an eavesdropper in IWSN setups. In this paper, we propose a physical layer security scheme, which is based on both insertion of an random error vector to forward error correction (FEC) codewords and transmission over decentralized relay nodes. Reed-Solomon and Golay codes are selected as FEC coding schemes and the security performance of the proposed model is evaluated with the aid of decoding error probability of an eavesdropper. The results show that security level is highly based on the location of the eavesdropper and secure communication can be achieved when some of channels between eavesdropper and relay nodes are significantly noisier.

In the article, it is proposed to improve the formulas for computing metrics of RIP, OSPF and EIGRP routing protocols by introducing an information security risk indicator of the route. This approach will allow to choose the best route in terms of Quality of Service (QoS) indicators and information security (confidentiality, integrity and availability of transmitted information).

In the article, it is proposed to improve the formulas for computing metrics of RIP, OSPF and EIGRP routing protocols by introducing an information security risk indicator of the route. This approach will allow to choose the best route in terms of Quality of Service (QoS) indicators and information security (confidentiality, integrity and availability of transmitted information).