Cryptanalysis of and improvement on the Hwang–Chen multi-proxy multi-signature schemes
Resource
Applied Mathematics and Computation 167 (1): 729-739
Journal
Applied Mathematics and Computation
Journal Volume
167
Journal Issue
1
Pages
729-739
Date Issued
2005
Date
2005
Author(s)
Wu, Ming-Luen
Abstract
Hwang and Chen recently proposed new multi-proxy multi-signature schemes that allow a group of authorized proxy signers to sign messages on behalf of a group of original signers. This paper shows that their schemes are insecure because a malicious proxy signer can forge a signature for a message secretly while participating in the message signing process with the other proxy signers. This paper then proposes a method to remove this weakness with only small computational overheads and without impairing the security of the original schemes. © 2004 Elsevier Inc. All rights reserved.
SDGs
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
12.pdf
Size
211.14 KB
Format
Adobe PDF
Checksum
(MD5):5e7bb04b9cbb168c4c2758f011d79e37