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Title: Quantum key distribution in the classical authenticated key exchange framework
Authors: Mosca, Michele
Stebila, Douglas
Ustaoğlu, Berkant
Keywords: Quantum cryptography
Authenticated key exchange
Cryptographic protocols
Security model
Quantum key distribution
Issue Date: 2013
Publisher: Springer
Source: Mosca, M., Stebila, D., and Ustaoğlu, B. (2013). Quantum key distribution in the classical authenticated key exchange framework. Lecture Notes in Computer Science, 7932 LNCS, 136-154. doi:10.1007/978-3-642-38616-9_9
Abstract: Key establishment is a crucial primitive for building secure channels in a multi-party setting. Without quantum mechanics, key establishment can only be done under the assumption that some computational problem is hard. Since digital communication can be easily eavesdropped and recorded, it is important to consider the secrecy of information anticipating future algorithmic and computational discoveries which could break the secrecy of past keys, violating the secrecy of the confidential channel. Quantum key distribution (QKD) can be used generate secret keys that are secure against any future algorithmic or computational improvements. QKD protocols still require authentication of classical communication, although existing security proofs of QKD typically assume idealized authentication. It is generally considered folklore that QKD when used with computationally secure authentication is still secure against an unbounded adversary, provided the adversary did not break the authentication during the run of the protocol. We describe a security model for quantum key distribution extending classical authenticated key exchange (AKE) security models. Using our model, we characterize the long-term security of the BB84 QKD protocol with computationally secure authentication against an eventually unbounded adversary. By basing our model on traditional AKE models, we can more readily compare the relative merits of various forms of QKD and existing classical AKE protocols. This comparison illustrates in which types of adversarial environments different quantum and classical key agreement protocols can be secure. © 2013 Springer-Verlag.
Description: 5th International Workshop on Post-Quantum Cryptography, PQCrypto 2013; Limoges; France; 4 June 2013 through 7 June 2013
ISBN: 9783642386152
ISSN: 0302-9743
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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