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An alternative Diffie-Hellman protocol
Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab). (SA3L, HMC2, CyRev, SmartSafe)ORCID-id: 0000-0001-9307-9421
2020 (engelsk)Inngår i: Cryptography, E-ISSN 2410-387X, Vol. 4, nr 1, artikkel-id 5Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The Diffie–Hellman protocol, ingenious in its simplicity, is still the major solution in protocols for generating a shared secret in cryptography for e-trading and many other applications after an impressive number of decades. However, lately, the threat from a future quantum computer has prompted successors resilient to quantum computer-based attacks. Here, an algorithm similar to Diffie–Hellman is presented. In contrast to the classic Diffie–Hellman, it involves floating point numbers of arbitrary size in the generation of a shared secret. This can, in turn, be used for encrypted communication based on symmetric cyphers. The validity of the algorithm is verified by proving that a vital part of the algorithm satisfies a one-way property. The decimal part is deployed for the one-way function in a way that makes the protocol a post-quantum key generation procedure. This is concluded from the fact that there is, as of yet, no quantum computer algorithm reverse engineering the one-way function. An example illustrating the use of the protocol in combination with XOR encryption is given. © 2020 MDPI (Basel, Switzerland)

sted, utgiver, år, opplag, sider
Basel: MDPI, 2020. Vol. 4, nr 1, artikkel-id 5
Emneord [en]
encryption key generation protocol, key exchange, shared secret, decimal part, one-way function, real numbers
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Identifikatorer
URN: urn:nbn:se:hh:diva-41725DOI: 10.3390/cryptography4010005OAI: oai:DiVA.org:hh-41725DiVA, id: diva2:1405995
Prosjekter
SmartSafe
Forskningsfinansiär
Knowledge Foundation
Merknad

Other funding: Halmstad University, grant number F2019/151. The APC was funded by Halmstad University.

Tilgjengelig fra: 2020-02-28 Laget: 2020-02-28 Sist oppdatert: 2020-03-03bibliografisk kontrollert

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