Permanent reencryption: How to survive generations of cryptanalysts to come

Marcus Völp, Francisco Rocha, Jeremie Decouchant, Jiangshan Yu, Paulo Esteves-Verissimo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The protection of long-lived sensitive information puts enormous stress on traditional ciphers, to survive generations of cryptanalysts. In addition, there is a continued risk of adversaries penetrating and attacking the systems in which these ciphers are implemented. In this paper, we present our work-in-progress on an approach to survive both cryptanalysis and intrusion attacks for extended periods of time. A prime objective of any similar work is to prevent the leakage of plaintexts. However, given the long lifespan of sensitive information, during which cryptanalysts could focus on breaking the cipher, it is equally important to prevent leakage of unduly high amounts of ciphertext. Our approach consists in an enclave-based architectural set-up bringing in primary resilience against attacks, seconded by permanently reencrypting portions of the confidential or privacy-sensitive data with fresh keys and combining ciphers in a threshold-based encryption scheme.
Original languageEnglish (US)
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherSpringer Verlagservice@springer.de
Pages232-237
Number of pages6
ISBN (Print)9783319710747
DOIs
StatePublished - Jan 1 2017
Externally publishedYes

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