doc fixups

[openssl.git] / crypto / ec / ec_check.c

diff --git a/crypto/ec/ec_check.c b/crypto/ec/ec_check.c
index 322d0fe551de43eeaabbaba4a805912bc1a0a5b6..097d7e1cc542b7d46f2ce8ba44b509edf01bd521 100644 (file)
--- a/crypto/ec/ec_check.c
+++ b/crypto/ec/ec_check.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2002-2019 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -10,6 +10,16 @@
 #include "ec_lcl.h"
 #include <openssl/err.h>
 
+int EC_GROUP_check_named_curve(const EC_GROUP *group, int nist_only)
+{
+    int nid;
+
+    nid = ec_curve_nid_from_params(group);
+    if (nid > 0 && nist_only && EC_curve_nid2nist(nid) == NULL)
+        nid = NID_undef;
+    return nid;
+}
+
 int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
 {
     int ret = 0;
@@ -17,6 +27,11 @@ int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
     BN_CTX *new_ctx = NULL;
     EC_POINT *point = NULL;
 
+    if (group == NULL || group->meth == NULL) {
+        ECerr(EC_F_EC_GROUP_CHECK, ERR_R_PASSED_NULL_PARAMETER);
+        return 0;
+    }
+
     /* Custom curves assumed to be correct */
     if ((group->meth->flags & EC_FLAGS_CUSTOM_CURVE) != 0)
         return 1;