scholarly journals Modified device key generation algorithm and A* algorithm to optimize the security measures based on trust value in device-to-device communications

2021 ◽  
Author(s):  
V. M. Gayathri ◽  
P. Supraja ◽  
A. Razia Sulthana ◽  
P. Mukunthan
2021 ◽  
Author(s):  
Gayathri VM ◽  
Supraja p ◽  
Razia Sulthana A ◽  
Mukunthan P

Abstract Security plays a vital role in communication networks. Since the nodes are mobile in Mobile Ad-hoc Networks (MANET), they are vulnerable to different types of attacks. Because of its mobility nature any node can enter the network at any time based on the coverage of the network. No centralized mechanism is found to verify or authenticate the nodes that are arriving/leaving the network. An algorithm is proposed for secure communication between source and destination based on the QoS parameters is called Modified Device Key Generation Algorithm (MDKGA). This algorithm elects an agent node based on the QoS parameters. Agent node is responsible for secure key generation and distribution of keys among the nodes. The neighboring node selection is based on trust value which acts as a heuristic function to select the node using A* algorithm.Various performance metrics are also analyzed. Comparison study has been carried out between the protocols of MANET.


2015 ◽  
Vol 743 ◽  
pp. 379-384 ◽  
Author(s):  
Zhang Li Lan ◽  
Lin Zhu ◽  
Yi Cai Li ◽  
Jun Liu

Key space will be reduced after using the traditional DES algorithm to directly encrypt color images. Through combining the chaotic capability of the logistic function and by means of a specific algorithm, the fake chaotic son key’s space which is produced by the logistic chaotic pseudo-random function could be acquired. Then use the key generation algorithm to replace the traditional DES key generation algorithm. Experiment illustrates that the proposed algorithm has stronger robustness and anti-jamming capability to noise, and larger key’s space, sensitive initial keys, and better encryption effect, meanwhile it is better immune to multiple attacks.


2016 ◽  
Vol 45 (2) ◽  
pp. 199-213 ◽  
Author(s):  
Alejandro Cabrera Aldaya ◽  
Raudel Cuiman Márquez ◽  
Alejandro J. Cabrera Sarmiento ◽  
Santiago Sánchez-Solano

2020 ◽  
Vol 47 (2) ◽  
pp. 216-225
Author(s):  
Sangrok Lee ◽  
Jiwoo Park ◽  
Sooyong Park

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