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Information-Theoretic Security of Cryptographic Channels

Fischlin, Marc ; Günther, Felix ; Muth, Philipp (2020):
Information-Theoretic Security of Cryptographic Channels.
In: Information and Communications Security, pp. 295-311,
Springer Nature, 22nd International Conference on Information and Communications Security (ICICS 2020), virtual Conference, 24.-26.08.2021, ISBN 978-3-030-61078-4,
DOI: 10.1007/978-3-030-61078-4_17,
[Conference or Workshop Item]

Abstract

We discuss the setting of information-theoretically secure channel protocols where confidentiality of transmitted data should hold against unbounded adversaries. We argue that there are two possible scenarios: One is that the adversary is currently bounded, but stores today's communication and tries to break confidentiality later when obtaining more computational power or time. We call channel protocols protecting against such attacks future-secure. The other scenario is that the adversary already has extremely strong computational powers and may try to use that power to break current executions. We call channels withstanding such stronger attacks unconditionally-secure.

Item Type: Conference or Workshop Item
Erschienen: 2020
Creators: Fischlin, Marc ; Günther, Felix ; Muth, Philipp
Title: Information-Theoretic Security of Cryptographic Channels
Language: English
Abstract:

We discuss the setting of information-theoretically secure channel protocols where confidentiality of transmitted data should hold against unbounded adversaries. We argue that there are two possible scenarios: One is that the adversary is currently bounded, but stores today's communication and tries to break confidentiality later when obtaining more computational power or time. We call channel protocols protecting against such attacks future-secure. The other scenario is that the adversary already has extremely strong computational powers and may try to use that power to break current executions. We call channels withstanding such stronger attacks unconditionally-secure.

Book Title: Information and Communications Security
Publisher: Springer Nature
ISBN: 978-3-030-61078-4
Uncontrolled Keywords: Solutions, S4, S6
Divisions: 20 Department of Computer Science
20 Department of Computer Science > Cryptography and Privacy Engineering (ENCRYPTO)
20 Department of Computer Science > Cryptography and Complexity Theory
20 Department of Computer Science > Security Engineering
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
Profile Areas
Profile Areas > Cybersecurity (CYSEC)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 1119: CROSSING – Cryptography-Based Security Solutions: Enabling Trust in New and Next Generation Computing Environments
Event Title: 22nd International Conference on Information and Communications Security (ICICS 2020)
Event Location: virtual Conference
Event Dates: 24.-26.08.2021
Date Deposited: 18 May 2021 07:12
DOI: 10.1007/978-3-030-61078-4_17
Additional Information:

Part of the Lecture Notes in Computer Science book series (LNCS, Vol. 12282)

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