Quantum Computing in Data Security: A Critical Assessment

Rosemarie Wittmann

Quantum computing promises significant computational speed-ups that could compromise the security of current public-key cryptography. As quantum technologies advance, SCADA systems will increasingly require enhanced cybersecurity measures. Two main quantum-safe approaches exist: Post-Quantum Cryptography (PQC) and Quantum Key Distribution (QKD). QKD offers the unique advantage of information-theoretic security, ensuring security regardless of an adversary’s computational power. This thesis addresses two identified research gaps: protecting SCADA networks against potential quantum-computer-based attacks and identifying relevant use cases for QKD to guide further research and adoption. The objective was to assess whether QKD is a viable solution for securing SCADA communications in hydropower plants against quantum threats. The analysis included designing a QKD-based SCADA communication architecture for a hydropower network, conducting a quantum vulnerability assessment, simulating the proposed setup and evaluating the advantages and disadvantages of QKD migration. The results indicate that, at the time of writing, QKD is not a viable option for securing SCADA communications in hydropower plants, as its disadvantages outweigh its benefits. For instance, QKD cannot guarantee availability, which is a critical requirement for SCADA in many critical infrastructures, including hydropower, and it is more costly than alternative quantum-safe solutions.

Tasfia Anwar, Kazi Hassan Shakib, Iqbal Hasan Sarker

ROBERT M. SLADE

Sogo Pierre Sanon, Hans Dieter Schotten

In the rapidly evolving telecommunications landscape, the advent of 6 G networks promises unparalleled connectivity and transformative capabilities. However, as the potential of 6G unfolds, so too do the security challenges, particularly in the face of quantum computing advancements. Post-Quantum Cryptography (PQC) emerges as a critical safeguard against potential threats to data integrity and confidentiality in 6 G networks. This paper addresses the critical role of PQC in safeguarding 6 G networks against these quantum-based threats. It analyzes the potential vulnerabilities posed by quantum computing, reviews the existing landscape of quantum-safe cryptographic solutions, and assesses their implications for mobile security. The paper also outlines the necessary steps for transitioning to quantumsafe mobile networks, supported by insights from governmental and institutional recommendations.

Zhang Xiao

As digitalization advances, data has become a core production factor. Data encryption computing and protection hold significant implications for national security, economic development, and social governance. This study addresses the current landscape characterized by frequent global data breaches, prominent conflicts between efficiency, security, and usability, security gaps in emerging scenarios, and the intensive introduction of data security regulations worldwide. The research categorizes technologies based on their lifecycle, analyzes encryption strategies according to application scenarios, and assesses risks from security threat perspectives. Findings indicate that a multi-layered protection architecture has emerged, with breakthroughs in privacy-preserving computing and advancements in frontier technologies like post-quantum cryptography. This study provides guidance for enterprise technology selection, facilitates industrial standard development, supports critical information infrastructure upgrades, and lays the foundation for building a trustworthy digital society and promoting secure digital economic development.

TANO, ISAGANI M.