### ON THE SECURITY OF TWO RING SIGNCRYPTION SCHEMES

S. Sree Vivek, S. Sharmila Deva Selvi, and C. Pandu Rangan

##### Abstract

Ring signcryption is a cryptographic primitive, that allows an user to send a message in confidential, authentic and anonymous way, i.e. the recipient of the message is convinced that the message is valid and it comes from one of the ring member, but does not know the actual sender. In this paper, we show attacks on ring signcryption schemes by Li et al. \cite{FHY08} and Chung et al. \cite{ChungWLC06}. We demonstrate anonymity and confidentiality attack on the scheme by Li et al. \cite{FHY08} and confidentiality attack on the scheme by Chung et al. \cite{ChungWLC06}.

Note: The previous version of the paper was revised because two of the breaks were found in some other published papers

Available format(s)
Publication info
Published elsewhere. Accepted in Secrypt 2009
Keywords
Identity-basedring signcryptionbilinear pairingcryptanalysis
Contact author(s)
ssreevivek @ gmail com
sharmioshin @ gmail com
History
2009-05-01: last of 12 revisions
See all versions
Short URL
https://ia.cr/2009/052

CC BY

BibTeX

@misc{cryptoeprint:2009/052,
author = {S. Sree Vivek and S. Sharmila Deva Selvi and C. Pandu Rangan},
title = {ON THE SECURITY OF TWO RING SIGNCRYPTION SCHEMES},
howpublished = {Cryptology ePrint Archive, Paper 2009/052},
year = {2009},
note = {\url{https://eprint.iacr.org/2009/052}},
url = {https://eprint.iacr.org/2009/052}
}

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