bug fix for inf check

2014-01-21 15:59:29 +09:00
parent 9f0e2eabd1
commit 8d05addc87
2 changed files with 3 additions and 1 deletions
--- a/2
+++ b/2
@@ -1,5 +1,7 @@
 2014-01-21  Niibe Yutaka  <gniibe@fsij.org>

+	* src/jpc.c (jpc_add_ac_signed): Bug fix for A check.
+
 	* src/ec_p256.c (ecdsa): Fix for constant time.

 	* src/modp256.c (modp256_add, modp256_sub, modp256_reduce)
--- a/src/jpc.c
+++ b/src/jpc.c
@@ -88,7 +88,7 @@ jpc_add_ac_signed (jpc *X, const jpc *A, const ac *B, int minus)
 #define y3_tmp c
 #define y1_c_cube a

-  if (A->z == 0)		/* A is infinite */
+  if (bn256_is_zero (A->z))		/* A is infinite */
    {
      memcpy (X->x, B->x, sizeof (bn256));
      if (minus)