Research Article

Secure and Efficient Communication in VANETs Using Level-Based Access Control

Table 3

Curve type A and type A1 parameters used in PBC library [47].

Curve type AValue

Base field size512 bits
K2
DLog security1024
Q878071079966331252243778198475404981 580688319941420821102865339926647563 088022295707862517942266222142315585 876958231745927771336731748132492512 9998224791
H120160122648911460793888213667405342 048029544012513118229196151310472072 89359704531102844802183906537786776
R730750818665451621361119245571504901 405976559617
exp1107
exp2159
sign0 and sign11
Curve type A1Value
Base field size512 bits
K2
DLog security1024
Q48512875896303752499712277254589628 51641935218829452119818956751100907 31581150453612948393470993158989600 45398524682007334164928531594799149 10054803644576011091315742065569036 18912908584413608071582472594605013 43449199712532828063940008683740048 50098044198971373968965561057845838 8126934242630557397618776539259
L1304
n (=r)36203638728584889925158415861634051 13165623297633919492402206530672318 89239664517621603278709696387305671 98058600508960697138006366861790409 77652838540728366486056523929529131 48442469092845976172822740742242547 33917313218308080644731349763985110 82162719551471174603705642580481969 2632040479575042834043863089