Date of Award


Document Type


Degree Name

Doctor of Philosophy (PhD)


Electrical and Computer Engineering

Committee Chair

Seong-Moo Yoo

Committee Member

B. Earl Wells

Committee Member

W. David Pan

Committee Member

Murat Tanik


Computer security, Data protection, Data integrity, Ad hoc networks (Computer networks)


Wireless ad hoc networks (WANETs) have become increasingly popular in our everyday business and personal lives. As long as nodes in the network belong to the same organization and share the same goal, it can generally be expected that all nodes can be trusted. So, without any security measures in place, any node is capable of compromising the integrity of the data it forwards. It is necessary to save or secure data transmission in WANETs to achieve effective communication because most of the routing protocols proposed for WANETs assume a trusted and reliable environment and they do not consider the security issues in their initial designs. The security aspects concern the methods to protect the information and to guarantee authentic transmissions. The security problems are well known, and many studies have been done in this area. Data integrity is an important security challenge in WANETs and one of the main security requirements in WANETs. Data integrity is required to support that message has not been corrupted, altered, or changed during the transmission of the data. This dissertation proposes three schemes to protect data integrity in different environments of the WANETs. First, it proposes a method protecting data integrity for a multi-application environment in Wireless Sensor Networks (WSNs) that use the v Concealed Data Aggregation Scheme for Multiple Applications (CDAMA) in the presence of end-to-end confidentiality by homomorphic encryption. For this method, we integrate a technique using message authentication code (MAC) protocol into the CDAMA scheme to detect and drop false data sooner for protecting data integrity and to overcome any bogus data in the network early. Second, it proposes a new approach to provide reliable and secure data transmission (data integrity) in Mobile Ad Hoc Networks (MANETs) under possible blackhole attacks based on modified Ad-hoc On-demand Multipath Distance Vector (AOMDV) protocol using homomorphic encryption scheme for cryptography technique. Third, it proposes a technique integrated into Compressive Sensing-Data Compression (CS-DC) scheme to detect and drop any malicious data quickly for protecting data integrity in Vehicular Ad Hoc Networks (VANETs) when data is forwarded from vehicles to Road Side Unit (RSU) for avoiding RSU deception. The performance of the proposed schemes shows the capability of protecting data integrity and the improvement of data transmission in the presence of malicious nodes in WANETs.



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