From: Dr. Stephen Henson <steve@openssl.org>
Date: Mon, 24 Jan 2011 15:08:01 +0000 (+0000)
Subject: check EC public key isn't point at infinity
X-Git-Tag: OpenSSL_1_0_0d~7
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=99ef8323e4f2ba0ccb77050de2ef91cd81f8c852;p=oweals%2Fopenssl.git

check EC public key isn't point at infinity
---

diff --git a/crypto/ec/ec_key.c b/crypto/ec/ec_key.c
index 12fb0e6d6d..522802c07a 100644
--- a/crypto/ec/ec_key.c
+++ b/crypto/ec/ec_key.c
@@ -304,7 +304,13 @@ int EC_KEY_check_key(const EC_KEY *eckey)
 		ECerr(EC_F_EC_KEY_CHECK_KEY, ERR_R_PASSED_NULL_PARAMETER);
 		return 0;
 		}
-	
+
+	if (EC_POINT_is_at_infinity(eckey->group, eckey->pub_key))
+		{
+		ECerr(EC_F_EC_KEY_CHECK_KEY, EC_R_POINT_AT_INFINITY);
+		goto err;
+		}
+
 	if ((ctx = BN_CTX_new()) == NULL)
 		goto err;
 	if ((point = EC_POINT_new(eckey->group)) == NULL)