arXiv subjects

Konstantinos Spalas

Publications and source records attributed to Konstantinos Spalas.

3 recordsLinked to original sources

arXiv2026

Simple Power Analysis on Post-Quantum Code Based Cryptosystems

Post-Quantum cryptography is about to substitute current cryptographic schemes as being resilient in attacks from quantum computers. McEleiece and Bit Flip Key Encapsulation (BIKE) are two delight representatives based on coding theory where classical structural attacks against these algorithms can be successfully phased out by selecting the appropriate key size. Using low cost equipment, the method of Simple Power Analysis (SPA) is used in this paper to evaluate whether or not there is significant information leakage during the decapsulation phase where the shared secret key is generated. Executing a related experiment it is shown that correlation between electromagnetic emissions and secret values exists. In the aftermath, with only 200 power traces collected, machine learning models can predict secret bits of the shared session key, produced during the decapsulation.

cs.CR↗

arXiv2026

Evaluating Future Air Traffic Management Security

The L-Band Digital Aviation Communication System (LDACS) aims to modernize communications between the aircraft and the tower. Besides digitizing this type of communication, the contributors also focus on protecting them against cyberattacks. There are several proposals regarding LDACS security, and a recent one suggests the use of physical unclonable functions (PUFs) for the authentication module. This work demonstrates this PUF-based authentication mechanism along with its potential vulnerabilities. Sophisticated models are able to predict PUFs, and, on the other hand, quantum computers are capable of threatening current cryptography, consisting factors that jeopardize the authentication mechanism giving the ability to perform impersonation attacks. In addition, aging is a characteristic that affects the stability of PUFs, which may cause instability issues, rendering the system unavailable. In this context, this work proposes the well-established Public Key Infrastructure (PKI), as an alternative solution.

cs.CR↗

arXiv2024

Towards the Unmanned Aerial Vehicle Traffic Management Systems (UTMs): Security Risks and Challenges

Every aspect of our life depends on the ability to communicate effectively. Organizations that manage to establish communication routines, protocols and means thrive. An Aerial Traffic Management System operates similarly as an organization but certainly in a more strict manner. Third party agencies ensure several aspects of their functionality, the utmost to be consider safety. Many people take safety as granted but it is a pretty difficult part our daily functions. Thus, apart from digesting new things and habits of the new era, simultaneously we have to ensure safety in every part of it. It is true that the more data we produce, the more information we create and the more specialization we must introduce in order to be effective in a reasonable time basis. A Unmanned Aircraft System Traffic Management (UTM) is a system that consists of miscellaneous modules where each of them needs its consideration regarding safety. In other words, a UTM is the state-of-the-art system that demand a high quality of services and specialization, if we need to consider them reliable.

cs.CR↗