TY - GEN
T1 - Spatial encryption under simpler assumption
AU - Zhou, Muxin
AU - Cao, Zhenfu
PY - 2009
Y1 - 2009
N2 - Spatial encryption was first proposed by Boneh and Hamburg. They showed that many useful encryption systems can be derived from it. In this paper, we describe two variants of spatial encryption. First we present a scheme that can be proved to be secure under the decisional bilinear Diffie-Hellman assumption, which is much simpler than the BDHE assumption used by Boneh and Hamburg. However, as a compromise, our ciphertext size and private key size are larger. We also discuss some techniques to shrink the private key of this scheme in a real application. Finally, we provide a hybrid construction which allows an optimal tradeoff between efficiency and security.
AB - Spatial encryption was first proposed by Boneh and Hamburg. They showed that many useful encryption systems can be derived from it. In this paper, we describe two variants of spatial encryption. First we present a scheme that can be proved to be secure under the decisional bilinear Diffie-Hellman assumption, which is much simpler than the BDHE assumption used by Boneh and Hamburg. However, as a compromise, our ciphertext size and private key size are larger. We also discuss some techniques to shrink the private key of this scheme in a real application. Finally, we provide a hybrid construction which allows an optimal tradeoff between efficiency and security.
UR - https://www.scopus.com/pages/publications/78650692032
U2 - 10.1007/978-3-642-04642-1_4
DO - 10.1007/978-3-642-04642-1_4
M3 - 会议稿件
AN - SCOPUS:78650692032
SN - 364204641X
SN - 9783642046414
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 19
EP - 31
BT - Provable Security - Third International Conference, ProvSec 2009, Proceedings
T2 - 3rd International Conference on Provable Security, ProvSec 2009
Y2 - 11 November 2009 through 13 November 2009
ER -