X-Git-Url: http://wagner.pp.ru/gitweb/?a=blobdiff_plain;f=gost_ec_keyx.c;h=06835d37b250287228d1b127469790e8b8f11159;hb=86bfcaca3c710def42582662311fb969ded120a3;hp=40cad2bc34f2240bc146e9fab562734f47abef77;hpb=336c30e54ca42f54641ee06c9dce26ecd454b6ea;p=openssl-gost%2Fengine.git

diff --git a/gost_ec_keyx.c b/gost_ec_keyx.c
index 40cad2b..06835d3 100644
--- a/gost_ec_keyx.c
+++ b/gost_ec_keyx.c
@@ -62,7 +62,12 @@ int VKO_compute_key(unsigned char *shared_key,
                        EC_GROUP_get0_order(grp), ctx))
         goto err;
 
-    /* these two curves have cofactor 4; the rest have cofactor 1 */
+#if 0
+    /*-
+     * These two curves have cofactor 4; the rest have cofactor 1.
+     * But currently gost_ec_point_mul takes care of the cofactor clearing,
+     * hence this code is not needed.
+     */
     switch (EC_GROUP_get_curve_name(grp)) {
         case NID_id_tc26_gost_3410_2012_256_paramSetA:
         case NID_id_tc26_gost_3410_2012_512_paramSetC:
@@ -70,6 +75,7 @@ int VKO_compute_key(unsigned char *shared_key,
                 goto err;
             break;
     }
+#endif
 
     if (!gost_ec_point_mul(grp, pnt, NULL, pub_key, scalar, ctx)) {
         GOSTerr(GOST_F_VKO_COMPUTE_KEY, GOST_R_ERROR_POINT_MUL);