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[GNUnet-SVN] r36327 - gnunet/src/scalarproduct
From: |
gnunet |
Subject: |
[GNUnet-SVN] r36327 - gnunet/src/scalarproduct |
Date: |
Sat, 5 Sep 2015 21:32:50 +0200 |
Author: grothoff
Date: 2015-09-05 21:32:50 +0200 (Sat, 05 Sep 2015)
New Revision: 36327
Modified:
gnunet/src/scalarproduct/gnunet-service-scalarproduct-ecc_alice.c
gnunet/src/scalarproduct/test_ecc_scalarproduct.c
Log:
-fixing ECC calculation
Modified: gnunet/src/scalarproduct/gnunet-service-scalarproduct-ecc_alice.c
===================================================================
--- gnunet/src/scalarproduct/gnunet-service-scalarproduct-ecc_alice.c
2015-09-05 19:23:41 UTC (rev 36326)
+++ gnunet/src/scalarproduct/gnunet-service-scalarproduct-ecc_alice.c
2015-09-05 19:32:50 UTC (rev 36327)
@@ -469,7 +469,15 @@
return NULL;
}
ret = gcry_mpi_new (0);
- gcry_mpi_set_ui (ret, ai_bi);
+ if (ai_bi > 0)
+ {
+ gcry_mpi_set_ui (ret, ai_bi);
+ }
+ else
+ {
+ gcry_mpi_set_ui (ret, - ai_bi);
+ gcry_mpi_neg (ret, ret);
+ }
return ret;
}
@@ -663,14 +671,14 @@
g_i = GNUNET_CRYPTO_ecc_dexp_mpi (edc,
r_i);
/* r_ia = r_i * a */
- gcry_mpi_mul (r_i,
- my_privkey,
- r_ia);
+ gcry_mpi_mul (r_ia,
+ r_i,
+ my_privkey);
gcry_mpi_release (r_i);
/* r_ia_ai = r_ia + a_i */
gcry_mpi_add (r_ia_ai,
- s->sorted_elements[i].value,
- r_ia);
+ r_ia,
+ s->sorted_elements[i].value);
h_i = GNUNET_CRYPTO_ecc_dexp_mpi (edc,
r_ia_ai);
GNUNET_CRYPTO_ecc_point_to_bin (edc,
Modified: gnunet/src/scalarproduct/test_ecc_scalarproduct.c
===================================================================
--- gnunet/src/scalarproduct/test_ecc_scalarproduct.c 2015-09-05 19:23:41 UTC
(rev 36326)
+++ gnunet/src/scalarproduct/test_ecc_scalarproduct.c 2015-09-05 19:32:50 UTC
(rev 36327)
@@ -50,6 +50,8 @@
gcry_mpi_t a_inv;
gcry_mpi_t ri;
gcry_mpi_t val;
+ gcry_mpi_t ria;
+ gcry_mpi_t tmp;
gcry_mpi_point_t *g;
gcry_mpi_point_t *h;
gcry_mpi_point_t pg;
@@ -70,29 +72,26 @@
gcry_mpi_point_t);
h = GNUNET_new_array (len,
gcry_mpi_point_t);
+ ria = gcry_mpi_new (0);
+ tmp = gcry_mpi_new (0);
for (i=0;i<len;i++)
{
- gcry_mpi_t tmp;
- gcry_mpi_t ria;
-
ri = GNUNET_CRYPTO_ecc_random_mod_n (edc);
g[i] = GNUNET_CRYPTO_ecc_dexp_mpi (edc,
ri);
/* ria = ri * a */
- ria = gcry_mpi_new (0);
gcry_mpi_mul (ria,
ri,
a);
/* tmp = ria + avec[i] */
- tmp = gcry_mpi_new (0);
gcry_mpi_add_ui (tmp,
ria,
avec[i]);
- gcry_mpi_release (ria);
h[i] = GNUNET_CRYPTO_ecc_dexp_mpi (edc,
tmp);
- gcry_mpi_release (tmp);
}
+ gcry_mpi_release (ria);
+ gcry_mpi_release (tmp);
/* Bob */
val = gcry_mpi_new (0);
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