Regular Section
Cryptanalysis of an Identity Based Proxy Multi-Signature Scheme
2008 Volume E91.A Issue 7 Pages 1820-1823
Details
2008 Volume E91.A Issue 7 Pages 1820-1823
In a proxy multi-signature scheme, a designated proxy signer can generate the signature on behalf of a group of original signers. Recently, Wang and Cao proposed an identity based proxy multi-signature scheme along with a security model. Although they proved that their scheme is secure under this model, we disprove their claim and show that their scheme is not secure.
