Paper 2003/111
Further Cryptanalysis of some Proxy Signature Schemes
Jiqiang Lv, Jingwei Liu, and Xinmei Wang
Abstract
Proxy signature is a signature that an original signer delegates his or her signing capability to a proxy signer, and then the proxy signer creates a signature on behalf of the original signer. However, Sun et al.[7] showed that the proxy and multi-proxy signatures of Lee et al.[3], and the strong proxy signature scheme with proxy signer privacy protection of Shum et al.[6] are not against the original signer's forgery attack, so these schemes do not process the property of unforgeability. In this paper, we present an extensive forgery method on these schemes, which makes the forgery method of Sun et al.be a special case of ours.
Note: revise a paper
Metadata
- Available format(s)
- -- withdrawn --
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Public Key CryptographyProxy Digital SignatureForgery Attack
- Contact author(s)
- lvjiqiang @ hotmail com
- History
- 2006-01-07: withdrawn
- 2003-06-03: received
- See all versions
- Short URL
- https://ia.cr/2003/111
- License
-
CC BY