Worldwide standardization activity for quantum key distribution
Romain Alléaume, Ivo Pietro Degiovanni, Alan Mink, Thomas E. Chapuran, Norbert Lütkenhaus, Momtchil Peev, Christopher J. Chunnilall, Vincente Martin, Marco Lucamarini, Martin B. Ward, Andrew J. Shields
We discuss the on-going worldwide activity to develop forward looking standards for quantum key distribution (QKD) in the European Telecommunications Standards Institute (ETSI) QKD industry specification group (ISG). The long term goal is to develop a certification methodology that bridges the gap between theoretical proofs and practical implementations with imperfect devices. Current efforts are focused on the handling of side channels and characterization of the most relevant components.
We discuss the on-going worldwide activity to develop forward looking standards for quantum key distribution (QKD) in the European Telecommunications Standards Institute (ETSI) QKD industry specification group (ISG). The long term goal is to develop a certification methodology that bridges the gap between theoretical proofs and practical implementations with imperfect devices. Current efforts are focused on the handling of side channels and characterization of the most relevant components.
In order to establish new ICT technologies successfully on the market it is essential to build trust within any potential users. This is especially true for technologies which are based upon paradigms that are not yet familiar to these users, such as quantum technologies. Technical standards are an excellent means to offer a certain degree of legal reliability and technical interoperability that is required by industry for commercial take up. While such standards on the one hand must be clear enough to provide strict rules for implementers, on the other hand they also must remain flexible enough to not restrict progress in further research and development on the standardized technology. Hence such standards have to be produced by a wide variety of stakeholders taking into account all their different needs. The paper will provide some insight into the general mechanisms of standardization and their relation to quantum technologies. Alongside with the relevance of standardization as an enabler for certification of quantum based technologies it will explain its potential for securing intellectual property. In its first part paper will concentrate on the advantages of standardization and discuss fears some of the stakeholders share, in detail. The second part will focus on the technical work going on in ETSI in relation to quantum technologies. In 2008 ETSI created a standards work group on Quantum Key Distribution, the ETSI ISG QKD and more recently a group on Quantum-Safe Cryptography, the ETSI ISG QSC. A significant part of the technical work of these groups has already been published and will be introduced in the following. However a big share of work is still ongoing and lot more is planned for the future, as are continuous revisions and updates of the published specifications. This standardization work covers several levels: It starts of by problem statements in the form of use cases, from which technical requirements can be derived. These requirements then form the base upon which a reference architecture is created. Various different specifications describe in detail components, protocols and interfaces. An ontology is developed in order to guarantee common understanding of the technical terms used in standardization for quantum technologies. Special emphasis is provided to security proofs.
Quantum Key Distribution (QKD) stands as a cornerstone in the realm of quantum communications, promising unparalleled security through the principles of quantum mechanics. However, the realization of QKD's full potential hinges not only on technological advancements but also on the establishment of robust standards governing its implementation. This paper presents a comprehensive analysis of the current landscape of QKD standards, highlighting existing gaps and charting a course towards their evolution. We begin by elucidating the foundational importance of standards in ensuring interoperability, reliability, and scalability within QKD Networks (QKDN). Despite the existence of several standardization efforts, such as those by the International Telecommunication Union (ITU) and the European Telecommunications Standards Institute (ETSI), significant gaps persist. Furthermore, we identify emerging challenges posed by the integration of QKD into existing classical communication infrastructures, as well as the advent of quantum networks comprising multiple QKD nodes. Addressing these challenges necessitates a concerted effort towards the refinement and expansion of QKD standards. To this end, we propose several key directions for the evolution of QKD standards. We also advocate further enhancing collaboration between academia, industry and standards bodies to streamline the standardization process and foster innovation. Finally, we underscore the critical role of standards in catalyzing the adoption of QKD technologies by industry stakeholders. Standards-compliant QKD solutions not only instill confidence among end users, but also facilitate seamless integration into existing communication infrastructures. In conclusion, this paper offers insights into the state-of-the-art, challenges, and future directions in QKD standardization, underlining its fundamental importance for the advancement of practical applications of quantum secure communication technologies.
Quantum Key Distribution (QKD) supports the negotiation and sharing of private keys with unconditional security between authorized parties. Over the years, theoretical advances and experimental demonstrations have successfully transitioned QKD from laboratory research to commercial applications. As QKD expands its reach globally, it encounters challenges such as performance limitations, cost, and practical security concerns. Nonetheless, innovations in satellite-based QKD and the development of new protocols are paving the way towards a worldwide network. In this review, we provide an overview of QKD implementations, with a focus on protocols, devices, and quantum channels. We discuss the challenges of practical QKD and explore long-haul QKD. Additionally, we highlight the future research directions that are expected to significantly advance the realization of a global QKD network.
Quantum Key Distribution, a fundamental component of quantum secure communication that exploits quantum states and resources for communication protocols, can future-proof the security of digital communications, when if advanced quantum computing systems and mathematical advances render current algorithmic cryptography insecure. A QKD system relies on the integration of quantum physical devices, as quantum sources, quantum channels and quantum detectors, in order to generate a true random (unconditionally secure) cryptographic key between two remote parties connected through a quantum channel. The gap between QKD implemented with ideal and real devices can be exploited to attack real systems, unless appropriate countermeasures are implemented. Characterization of real devices and countermeasure is necessary to guarantee security. Free-space QKD systems can provide secure communication to remote parties of the globe, while QKD systems based on entanglement are intrinsically less vulnerable to attack. Metrology to characterize the optical components of these systems is required. Actually, the “Optical metrology for quantum-enhanced secure telecommunication” Project (MIQC2) is steering the metrological effort for Quantum Cryptography in the European region in order to accelerate the development and commercial uptake of Quantum Key Distribution (QKD) technologies. Aim of the project is the development of traceable measurement techniques, apparatus, and protocols that will underpin the characterisation and validation of the performance and quantum-safe security of such systems, essential steps towards standardization and certification of practical implementations of quantum-based technologies.
Quantum random number generation (QRNG) and quantum key distribution (QKD) are the first applications of quantum physics at the level of individual quanta that have matured into commercial products. Both have been commercially available for over 10 years and increasingly adopted in information security systems. Current efforts focus on standardization and certification of QRNG and QKD devices and their components in order to validate the technology and enable more widespread adoption. Since no official certification scheme specific to quantum devices has been devised so far, alternative options must be investigated. This paper describes our approaches and efforts to enable compliance of commercial QRNG and QKD network devices with security standards such as AIS 20/311 and FIPS 140-2.2