Bio
A.K.M. Nazmus Sakib is a researcher and academic based in Dhaka, Bangladesh, with a strong focus on information security, network protocols, and machine learning applications. He has been affiliated with Chittagong University of Engineering & Technology (CUET) and Dhaka International University (DIU), where he has contributed to the Faculty of Science and Engineering. His published works include critical analyses and enhancements of security protocols such as IEEE 802.16e and WPA2, as well as innovative approaches in Bangla OCR systems and audio watermarking. With a B.Sc. degree and a stream of research in information security, Sakib has authored multiple papers and served as a reviewer for the Global Journal of Computer Science and Technology (GJCST). His work demonstrates a commitment to advancing cybersecurity and applied computing in Bangladesh.
Educational Journey
B.Sc.
Experience
Editors Role
Reviewer
GJCST
2011 -Research
Data Adaptive Multi-Band Approach for Robust Audio Watermarking Using Adaptive Threshold
This paper presents a data adaptive digital audio watermarking process with the use of Empirical Mode Decomposition (EMD) and Hilbert Transform (HT). The host audio signal is decomposed into several Intrinsic Mode Functions (IMFs). A binary image or a set of -1 and 1, which is obtained by mapping from standard normal distributed pseudo random numbers, is embedded as secret information into the significant coefficients of the highest energetic IMF that are greater than a specified adaptive threshold. Thus watermarked IMF is less sensitive to common signal processing attack. As a result this method increases more robustness. The experimental results show that the proposed method has good imperceptibility and robustness under common signal processing attacks such as additive noise (in time domain and in frequency domain), low pass filtering, re-sampling, re-quantization, MP3 compression, and sound processing effects such as, delay, a natural sounding reverberation (Schroeder's Reverberator), flanging effect, equalization effect, etc. A Bit Error calculation equation is provided to measure the accuracy of the extracted watermark.
Key Agreement & Authentication Protocol for IEEE 802.11
WPA and WPA2 (Wi-Fi Protected Access) is a certification program developed by the Wi-Fi Alliance to indicate compliance with the security protocol created by the WiFi alliance to secure wireless networks. The alliance defined the protocol in response to several weaknesses researchers had found in the previous Wired Equivalent Privacy (WEP) system. Many sophisticated authentication and encryption techniques have been embedded into WPA but it is still facing a lot of challenging situations. In this paper we discuss the vulnerability & weakness of WPA. This paper also present solutions or suggestions which will improve Wi-Fi Protected Access (WPA) protocol. We provide a brief description of the different functional entities and we investigate several technical issues including infrastructure and aspects related to the AAA (Authentication, Authorization, and Accounting) procedures for users as well as the system security. Also we suggest different key agreement algorithm & encryption techniques.
IEEE 802.16e Security Vulnerability : Analysis & Solution
Secure Authentication & Key Establishment protocol with perfect Forward Secrecy for Multi and Broad cast service in IEEE 802.16e
Many complicated authentication and encryption techniques have been embedded into WiMAX but it still facing a lot of challenging situations. This paper shows that, GTEK Hash chain algorithm for Multi and Broadcast service of IEEE 802.16e facing a reduced forward secrecy problem. These vulnerabilities are the possibilities to forge key messages in Multiand Broadcast operation, which are susceptible to forgery and reveals important management information. In this paper, we also propose three UAKE protocols with PFS (Perfect Forward Secrecy) that are efficient and practical for mobile devices.
