Merge "init attribute-based encryption"

1 files changed, 62 insertions, 0 deletions

diff --git a/moon-abe/pbc-0.5.14/benchmark/multipairing.c b/moon-abe/pbc-0.5.14/benchmark/multipairing.c
new file mode 100644
index 00000000..39c9ce77
--- /dev/null
+++ b/moon-abe/pbc-0.5.14/benchmark/multipairing.c
@@ -0,0 +1,62 @@
+// Compares dedicated multipairing (product of pairings) routine with naive
+// method.
+#include <pbc.h>
+#include "pbc_test.h"
+
+int main(int argc, char **argv) {
+  enum { K = 5 };
+  pairing_t pairing;
+  element_t x[K], y[K], r, r2, tmp;
+  int i, n;
+  double t0, t1, ttotal, ttotalm;
+
+  pbc_demo_pairing_init(pairing, argc, argv);
+
+  for(i = 0; i < K; i++) {
+    element_init_G1(x[i], pairing);
+    element_init_G2(y[i], pairing);
+  }
+  element_init_GT(r, pairing);
+  element_init_GT(r2, pairing);
+  element_init_GT(tmp, pairing);
+
+  n = 10;
+  ttotal = 0.0;
+  ttotalm = 0.0;
+  for (i=0; i<n; i++) {
+    int j;
+    for(j = 0; j < K; j++) {
+      element_random(x[j]);
+      element_random(y[j]);
+    }
+
+    t0 = pbc_get_time();
+    element_prod_pairing(r, x, y, K);
+    t1 = pbc_get_time();
+    ttotalm += t1 - t0;
+
+    t0 = pbc_get_time();
+    element_pairing(r2, x[0], y[0]);
+    for(j = 1; j < K; j++) {
+      element_pairing(tmp, x[j], y[j]);
+      element_mul(r2, r2, tmp);
+    }
+    t1 = pbc_get_time();
+    ttotal += t1 - t0;
+
+    element_printf("e(x,y) = %B\n", r);
+    EXPECT(!element_cmp(r, r2));
+  }
+  printf("average pairing time = %f\n", ttotal / n);
+  printf("average multi-pairing time = %f\n", ttotalm / n);
+
+  for(i = 0; i < K; i++) {
+    element_clear(x[i]);
+    element_clear(y[i]);
+  }
+  element_clear(r);
+  element_clear(r2);
+
+  pairing_clear(pairing);
+  return 0;
+}