Forgeability of Wang-Zhu-Feng-Yau’s attribute-based signature with policy-and-endorsement mechanism
Data(s) |
01/07/2013
|
---|---|
Resumo |
Recently, Wang et al. presented a new construction of attribute-based signature with policy-and-endorsement mechanism. The existential unforgeability of their scheme was claimed to be based on the strong Diffie-Hellman assumption in the random oracle model. Unfortunately, by carefully revisiting the design and security proof of Wang et al.’s scheme, we show that their scheme cannot provide unforgeability, namely, a forger, whose attributes do not satisfy a given signing predicate, can also generate valid signatures. We also point out the flaws in Wang et al.’s proof. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Springer-Verlag |
Relação |
http://dro.deakin.edu.au/eserv/DU:30064478/huang-forgeability-2013.pdf http://dx.doi.org/10.1007/s11390-013-1372-y |
Direitos |
2013, Springer |
Palavras-Chave | #attribute-based signature #existential unforgeability #policy-and-endorsement |
Tipo |
Journal Article |