Title :
Identity-Based On-Line/Off-Line Signcryption
Author :
Sun, Dongdong ; Huang, Xinyi ; Mu, Yi ; Susilo, Willy
Author_Institution :
Sch. of Comput. Sci. & Software Eng., Univ. of Wollognong, Wollongong, NSW
Abstract :
We present an identity-based online/offline signcryption scheme, where most of computations are carried out when the message is not available (i.e., off-line stage) and the online part of our scheme does not require any exponent computations and therefore is very efficient. It combines the functionalities of signature and encryption and is provably secure in the random oracle model. We also show that our scheme is indistinguishable against adaptive chosen-ciphertext attacks (IND-IDSC-CCA2) and is existentially unforgeable against adaptive chosen-message attacks (EF-IDSC-ACMA).
Keywords :
cryptography; digital signatures; adaptive chosen-ciphertext attack; adaptive chosen-message attack; encryption; identity-based online-offline signcryption; random oracle model; Computer networks; Concrete; Concurrent computing; Costs; Elliptic curve cryptography; Identity-based encryption; Parallel processing; Public key; Public key cryptography; Security; ID-based; On-line/Off-line; Signcryption;
Conference_Titel :
Network and Parallel Computing, 2008. NPC 2008. IFIP International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-0-7695-3354-4
DOI :
10.1109/NPC.2008.12
