TY - GEN
T1 - Shorter IBE and signatures via asymmetric pairings
AU - Chen, Jie
AU - Lim, Hoon Wei
AU - Ling, San
AU - Wang, Huaxiong
AU - Wee, Hoeteck
PY - 2013
Y1 - 2013
N2 - We present efficient Identity-Based Encryption (IBE) and signature schemes under the Symmetric External Diffie-Hellman (SXDH) assumption in bilinear groups. In both the IBE and the signature schemes, all parameters have constant numbers of group elements, and are shorter than those of previous constructions based on Decisional Linear (DLIN) assumption. Our constructions use both dual system encryption (Waters, Crypto '09) and dual pairing vector spaces (Okamoto and Takashima, Pairing '08, Asiacrypt '09). Specifically, we show how to adapt the recent DLIN-based instantiations of Lewko (Eurocrypt '12) to the SXDH assumption. To our knowledge, this is the first work to instantiate either dual system encryption or dual pairing vector spaces under the SXDH assumption.
AB - We present efficient Identity-Based Encryption (IBE) and signature schemes under the Symmetric External Diffie-Hellman (SXDH) assumption in bilinear groups. In both the IBE and the signature schemes, all parameters have constant numbers of group elements, and are shorter than those of previous constructions based on Decisional Linear (DLIN) assumption. Our constructions use both dual system encryption (Waters, Crypto '09) and dual pairing vector spaces (Okamoto and Takashima, Pairing '08, Asiacrypt '09). Specifically, we show how to adapt the recent DLIN-based instantiations of Lewko (Eurocrypt '12) to the SXDH assumption. To our knowledge, this is the first work to instantiate either dual system encryption or dual pairing vector spaces under the SXDH assumption.
UR - http://www.scopus.com/inward/record.url?scp=84884477863&partnerID=8YFLogxK
M3 - Conference proceeding contribution
AN - SCOPUS:84884477863
SN - 978364236334
VL - 7708
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 122
EP - 140
BT - Pairing-Based Cryptography, Pairing 2012 - 5th International Conference, Revised Selected Papers
PB - Springer, Springer Nature
CY - Berlin; New York
T2 - 5th International Conference on Pairing-Based Cryptography, Pairing 2012
Y2 - 16 May 2012 through 18 May 2012
ER -