Hakem Beitollahi Articles List

List of Articles Hakem Beitollahi

Open Access Article
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1 - An On-Chip Detection Mechanism to Detect Scan-Based Attack in Crypto-Chips
F. Jamali Zavareh H. Beitollahi
20.1001.1.16823745.1398.17.1.15.8

Since the advent of cryptographic chips, the side channel attacks have become a serious threat to cryptographic algorithms and security systems. The side channel attacks use weaknesses in the chip implementation instead of using the computational weaknesses of the algor More

Since the advent of cryptographic chips, the side channel attacks have become a serious threat to cryptographic algorithms and security systems. The side channel attacks use weaknesses in the chip implementation instead of using the computational weaknesses of the algorithms. The scan chain that is widely used in the chip test is one of these side channels. To avoid an attack using a scan chain, one can remove the scan chain after the construction test, but this method makes it impossible to test the post-construction and updating the circuit. Therefore, in addition to preserving the testability of the scan chain, it is necessary to look for a method to prevent the side channel attacks. In this article, a method is proposed to identify the attacker and prevent his scan-based attacks. In this way, by the user authorization, the corresponding output will be generated and the attacker's access to sensitive information is prevented. The proposed method, with an area overhead of less than 1%, power overhead around 1% and a negligible delay overhead retains testability and can prevent differential and signature-based scan attacks better than previous state-of-the-art techniques. Manuscript profile
Open Access Article
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2 - A New Parallel Method to Verify the Packets Forwarding in SDN Networks
Rozbeh Beglari Hakem Beitollahi

The rise of Software-Defined Networking (SDN) has revolutionized network management, offering greater flexibility and programmability. However, ensuring the accuracy of packet forwarding remains paramount for maintaining network reliability and security in SDN environme More

The rise of Software-Defined Networking (SDN) has revolutionized network management, offering greater flexibility and programmability. However, ensuring the accuracy of packet forwarding remains paramount for maintaining network reliability and security in SDN environments. Unlike traditional IP networks, SDN separates the control plane from the data plane, creating new challenges for securing data transmission. Existing verification methods designed for IP networks often cannot be directly applied to SDN due to this architectural difference. To address the limitations of existing verification methods in SDN networks, new approaches are necessary. This research proposes a novel parallel method for verifying packet forwarding, building upon concepts from DYNAPFV. The proposed approach aims to overcome specific limitations of existing methods (including DYNAPFV), such as scalability issues, slow verification times. Simulations demonstrate significant improvements compared to DYNAPFV. The proposed parallel method achieves a 92% reduction in time required to identify malicious nodes within the network. The results also reveal a trade-off between security and verification time. As the probability of packet integrity confirmation increases from 0.8 to 0.99, system security strengthens, but the time to detect malicious switches also increases. Manuscript profile

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List of Articles Hakem Beitollahi