Paper 2004/054
Comments on a Threshold Proxy Signature Scheme Based on the RSA Cryptosystem
Guilin Wang, Feng Bao, Jianying Zhou, and Robert H. Deng
Abstract
In a (t, n) proxy signature scheme, the original signer can delegate his/her signing capability to n proxy signers such that any t or more proxy singers can sign messages on behalf of the former, but t-1 or less of them cannot do the same thing. Such schemes have been suggested for use in a number of applications, particularly in distributed computing where delegation of rights is quite common. Based on the RSA cryptosystem, Hwang et al. recently proposed an efficient (t, n) threshold proxy signature scheme. In this paper we identify several security weaknesses in their scheme and show that their scheme is insecure.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Comments on “A Practical (t, n) Threshold Proxy Signature Scheme Based on the RSA Cryptosystem”. IEEE Transactions on Knowledge and Data Engineering (TKDE), 16(10): 1309-1311, Oct. 2004.
- Keywords
- proxy signaturedigital signaturepublic key cryptosystemdata security.
- Contact author(s)
- glwang @ i2r a-star edu sg
- History
- 2005-01-10: revised
- 2004-02-23: received
- See all versions
- Short URL
- https://ia.cr/2004/054
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2004/054,
author = {Guilin Wang and Feng Bao and Jianying Zhou and Robert H. Deng},
title = {Comments on a Threshold Proxy Signature Scheme Based on the {RSA} Cryptosystem},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/054},
year = {2004},
url = {https://eprint.iacr.org/2004/054}
}
