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Paper 2004/280
Cryptanalysis of Park-Lee Nominative Proxy Signature Scheme
Zhengjun Cao
Abstract
Park and Lee have proposed a digital nominative proxy signature scheme for mobile communication in [1]. They claimed that neither Origin signer nor Proxy agent can generate a valid signature solely. In this paper we show that Origin signer can generate a valid signature without the cooperation of the agent. In fact, the flaw comes from that Verifier dose not use the public key of Proxy agent in verifying phase. It's a serious designing error.
Metadata
- Available format(s)
- PDF PS
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Unknown where it was published
- Contact author(s)
- zjcamss @ hotmail com
- History
- 2004-10-30: received
- Short URL
- https://ia.cr/2004/280
- License
-
CC BY