Timed-Ephemerizer: Make Assured Data Appear and Disappear

Qiang Tang

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)

Abstract

The concept of Ephemerizer, proposed by Perlman, is a mechanism for assured data deletion. Ephemerizer provides a useful service that expired data deleted from the persistent storage devices will be unrecoverable, even if later on some of the private keys in the system are compromised. However, no security model has ever been proposed for this primitive and existing protocols have not been studied formally. In practice, a potential shortcoming of existing Ephemerizer protocols is that they are supposed to provide only assured deletion but not assured initial disclosure. In other words, there is no guarantee on when the data will be initially disclosed. In this paper, we formalize the notion of Timed-Ephemerizer which can be regarded as augmented Ephemerizer and can provide both assured initial disclosure and deletion for sensitive data. We propose a new Timed-Ephemerizer protocol and prove its security in the proposed security model.
Original languageUndefined
Title of host publicationSixth European Workshop on Public Key Services, Applications and Infrastructures
Place of PublicationLondon
PublisherSpringer
Pages195-208
Number of pages21
ISBN (Print)978-3-642-16440-8
DOIs
Publication statusPublished - 2009

Publication series

NameLecture Notes in Computer Science
PublisherSpringer Verlag
Volume6391
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Keywords

  • METIS-263951
  • EWI-15802
  • SCS-Cybersecurity
  • IR-67831

Cite this

Tang, Q. (2009). Timed-Ephemerizer: Make Assured Data Appear and Disappear. In Sixth European Workshop on Public Key Services, Applications and Infrastructures (pp. 195-208). (Lecture Notes in Computer Science; Vol. 6391). London: Springer. https://doi.org/10.1007/978-3-642-16441-5_13
Tang, Qiang. / Timed-Ephemerizer: Make Assured Data Appear and Disappear. Sixth European Workshop on Public Key Services, Applications and Infrastructures. London : Springer, 2009. pp. 195-208 (Lecture Notes in Computer Science).
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abstract = "The concept of Ephemerizer, proposed by Perlman, is a mechanism for assured data deletion. Ephemerizer provides a useful service that expired data deleted from the persistent storage devices will be unrecoverable, even if later on some of the private keys in the system are compromised. However, no security model has ever been proposed for this primitive and existing protocols have not been studied formally. In practice, a potential shortcoming of existing Ephemerizer protocols is that they are supposed to provide only assured deletion but not assured initial disclosure. In other words, there is no guarantee on when the data will be initially disclosed. In this paper, we formalize the notion of Timed-Ephemerizer which can be regarded as augmented Ephemerizer and can provide both assured initial disclosure and deletion for sensitive data. We propose a new Timed-Ephemerizer protocol and prove its security in the proposed security model.",
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Tang, Q 2009, Timed-Ephemerizer: Make Assured Data Appear and Disappear. in Sixth European Workshop on Public Key Services, Applications and Infrastructures. Lecture Notes in Computer Science, vol. 6391, Springer, London, pp. 195-208. https://doi.org/10.1007/978-3-642-16441-5_13

Timed-Ephemerizer: Make Assured Data Appear and Disappear. / Tang, Qiang.

Sixth European Workshop on Public Key Services, Applications and Infrastructures. London : Springer, 2009. p. 195-208 (Lecture Notes in Computer Science; Vol. 6391).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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AB - The concept of Ephemerizer, proposed by Perlman, is a mechanism for assured data deletion. Ephemerizer provides a useful service that expired data deleted from the persistent storage devices will be unrecoverable, even if later on some of the private keys in the system are compromised. However, no security model has ever been proposed for this primitive and existing protocols have not been studied formally. In practice, a potential shortcoming of existing Ephemerizer protocols is that they are supposed to provide only assured deletion but not assured initial disclosure. In other words, there is no guarantee on when the data will be initially disclosed. In this paper, we formalize the notion of Timed-Ephemerizer which can be regarded as augmented Ephemerizer and can provide both assured initial disclosure and deletion for sensitive data. We propose a new Timed-Ephemerizer protocol and prove its security in the proposed security model.

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Tang Q. Timed-Ephemerizer: Make Assured Data Appear and Disappear. In Sixth European Workshop on Public Key Services, Applications and Infrastructures. London: Springer. 2009. p. 195-208. (Lecture Notes in Computer Science). https://doi.org/10.1007/978-3-642-16441-5_13