From e0f2bbd1b497f09327335a94c1fd5cd06c2fa251 Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Tue, 19 Jul 2016 19:12:45 -0700
Subject: [PATCH] Added comment about why 0's test is disabled. ECC without
 Shamir fails with fast or normal math.

---
 wolfcrypt/test/test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wolfcrypt/test/test.c b/wolfcrypt/test/test.c
index b33d24ce7..9d69a952d 100644
--- a/wolfcrypt/test/test.c
+++ b/wolfcrypt/test/test.c
@@ -6822,7 +6822,7 @@ static int ecc_test_curve_size(WC_RNG* rng, int keySize, int testVerifyCount,
 #endif /* HAVE_ECC_KEY_EXPORT */
 
 #ifdef HAVE_ECC_SIGN
-#ifdef ECC_SHAMIR
+#ifdef ECC_SHAMIR /* ECC w/out Shamir has issue with all 0 digest */
     /* test DSA sign hash with zeros */
     for (i = 0; i < (int)sizeof(digest); i++) {
         digest[i] = 0;