Open AccessProvably Secure Aggregate Signcryption Scheme
Author(s) -
Ren XunYi,
Qi ZhengHua,
Geng Yang
Publication year - 2012
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.12.0111.0215
Subject(s) - signcryption , random oracle , digital signature , computer science , encryption , scheme (mathematics) , authentication (law) , aggregate (composite) , computer network , cryptography , signature (topology) , computer security , public key cryptography , theoretical computer science , hash function , mathematics , mathematical analysis , materials science , geometry , composite material
An aggregate signature scheme is a digital signature scheme that allows aggregation of n distinct signatures by n distinct users on n distinct messages. In this paper, we present an aggregate signcryption scheme (ASC) that is useful for reducing the size of certification chains (by aggregating all signatures in the chain) and for reducing message size in secure routing protocols. The new ASC scheme combines identity‐based encryption and the aggregation of signatures in a practical way that can simultaneously satisfy the security requirements for confidentiality and authentication. We formally prove the security of the new scheme in a random oracle model with respect to security properties IND‐CCA2, AUTH‐CMA2, and EUF‐CMA.