Merge "init attribute-based encryption"

1 files changed, 38 insertions, 0 deletions

diff --git a/moon-abe/pbc-0.5.14/gen/listfreeman.c b/moon-abe/pbc-0.5.14/gen/listfreeman.c
new file mode 100644
index 00000000..f3f18cc4
--- /dev/null
+++ b/moon-abe/pbc-0.5.14/gen/listfreeman.c
@@ -0,0 +1,38 @@
+// List discriminant and bits in r and q for type G pairings that may be
+// suitable for cryptography.
+
+#include "pbc.h"
+
+int show(pbc_cm_t cm, void *data) {
+  unsigned int D = * (unsigned *) data;
+  int qbits, rbits;
+  qbits = mpz_sizeinbase(cm->q, 2);
+  rbits = mpz_sizeinbase(cm->r, 2);
+  printf("%d, %d, %d\n", D, qbits, rbits);
+  fflush(stdout);
+  return 0;
+}
+
+void try(int tryD) {
+  pbc_cm_search_g(show, &tryD, tryD, 500);
+}
+
+int main(int argc, char **argv) {
+  unsigned int D = 0;
+
+  if (argc > 1) {
+    D = atoi(argv[1]);
+    if (D % 120) {
+      pbc_die("D must be multiple of 120");
+    }
+  }
+
+  printf("D < %u, bits in q, bits in r\n", 1000000000);
+  while (D < 1000000000) {
+    try(D + 43);
+    try(D + 67);
+    D+=120;
+  }
+
+  return 0;
+}