Comments on 'efficient revocable certificateless encryption secure in the standard model'

Ying-kai Tang; Sherman S.M. Chow; Joseph K. Liu

doi:10.1093/comjnl/bxt127

Comments on 'efficient revocable certificateless encryption secure in the standard model'

Ying-kai Tang, Sherman S.M. Chow, Joseph K. Liu

Research output: Contribution to journal › Comment / Debate › Research › peer-review

6 Citations (Scopus)

Abstract

Certificateless encryption (CLE) can be used to prevent the key generation centre from decrypting ciphertexts (which addresses the key escrow problem of identity-based encryption), but it cannot provide user revocation mechanism by default. A revocable CLE scheme was proposed by Shen et al. (2014. Efficient revocable certificateless encryption secure in the standard model. Comput. J., 57, 592-601) which realizes the revocation by requiring a time key in the decryption process. Despite of their security proofs, this paper shows an attack of their revocation mechanism.

Original language	English
Pages (from-to)	779-781
Number of pages	3
Journal	The Computer Journal
Volume	58
Issue number	4
DOIs	https://doi.org/10.1093/comjnl/bxt127
Publication status	Published - 2015
Externally published	Yes

Keywords

certificateless encryption
revocation
attack

Access to Document

10.1093/comjnl/bxt127

Cite this

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abstract = "Certificateless encryption (CLE) can be used to prevent the key generation centre from decrypting ciphertexts (which addresses the key escrow problem of identity-based encryption), but it cannot provide user revocation mechanism by default. A revocable CLE scheme was proposed by Shen et al. (2014. Efficient revocable certificateless encryption secure in the standard model. Comput. J., 57, 592-601) which realizes the revocation by requiring a time key in the decryption process. Despite of their security proofs, this paper shows an attack of their revocation mechanism. ",

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AB - Certificateless encryption (CLE) can be used to prevent the key generation centre from decrypting ciphertexts (which addresses the key escrow problem of identity-based encryption), but it cannot provide user revocation mechanism by default. A revocable CLE scheme was proposed by Shen et al. (2014. Efficient revocable certificateless encryption secure in the standard model. Comput. J., 57, 592-601) which realizes the revocation by requiring a time key in the decryption process. Despite of their security proofs, this paper shows an attack of their revocation mechanism.

KW - certificateless encryption

KW - revocation

KW - attack

U2 - 10.1093/comjnl/bxt127

DO - 10.1093/comjnl/bxt127

M3 - Comment / Debate

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