Paper 2012/488
Designated Verifier Threshold Proxy Signature Scheme without Random Oracles
Mohammad Beheshti-Atashgah, Majid Bayat, Mahmoud Gardeshi, and Mohammad Reza Aref
Abstract
In a $(t,n)$ designated verifier threshold proxy signature \, scheme, an original signer can delegate his/her signing power to $n$ proxy signers such that any $t$ or more out of $n$ proxy signers can sign messages on behalf of the original signer but $t-1$ or less of the proxy signers cannot generate a valid proxy signature. Of course, the signature is issued for a designated receiver and therefore only the designated receiver can validate the proxy signature. In this paper, we propose a new designated verifier threshold proxy signature scheme and also show that the proposed scheme has provable security in the standard model. The security of proposed scheme is based on the $GBDH$ assumption and the proposed scheme satisfies all the security requirements of threshold proxy signature schemes.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Proxy signature schemeThreshold proxy signature schemeProvable securityStandard modelBilinear pairing.
- Contact author(s)
- M Beheshti A @ gmail com
- History
- 2012-08-22: received
- Short URL
- https://ia.cr/2012/488
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2012/488,
author = {Mohammad Beheshti-Atashgah and Majid Bayat and Mahmoud Gardeshi and Mohammad Reza Aref},
title = {Designated Verifier Threshold Proxy Signature Scheme without Random Oracles},
howpublished = {Cryptology ePrint Archive, Paper 2012/488},
year = {2012},
note = {\url{https://eprint.iacr.org/2012/488}},
url = {https://eprint.iacr.org/2012/488}
}
