Check a return value in the SRP code

[openssl.git] / crypto / bn / bn_intern.c

diff --git a/crypto/bn/bn_intern.c b/crypto/bn/bn_intern.c
index 2c970647defd5efec7d925c92f8daad61671f748..f30e9b385c1f0845398aa377d3f6eb041d3f4f86 100644 (file)
--- a/crypto/bn/bn_intern.c
+++ b/crypto/bn/bn_intern.c
@@ -1,7 +1,7 @@
 /*
- * Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2014-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
- * Licensed under the OpenSSL license (the "License").  You may not use
+ * 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
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
@@ -143,11 +143,6 @@ int bn_get_top(const BIGNUM *a)
     return a->top;
 }
 
-void bn_set_top(BIGNUM *a, int top)
-{
-    a->top = top;
-}
-
 int bn_get_dmax(const BIGNUM *a)
 {
     return a->dmax;
@@ -177,16 +172,20 @@ BN_ULONG *bn_get_words(const BIGNUM *a)
     return a->d;
 }
 
-void bn_set_static_words(BIGNUM *a, BN_ULONG *words, int size)
+void bn_set_static_words(BIGNUM *a, const BN_ULONG *words, int size)
 {
-    a->d = words;
+    /*
+     * |const| qualifier omission is compensated by BN_FLG_STATIC_DATA
+     * flag, which effectively means "read-only data".
+     */
+    a->d = (BN_ULONG *)words;
     a->dmax = a->top = size;
     a->neg = 0;
     a->flags |= BN_FLG_STATIC_DATA;
     bn_correct_top(a);
 }
 
-int bn_set_words(BIGNUM *a, BN_ULONG *words, int num_words)
+int bn_set_words(BIGNUM *a, const BN_ULONG *words, int num_words)
 {
     if (bn_wexpand(a, num_words) == NULL) {
         BNerr(BN_F_BN_SET_WORDS, ERR_R_MALLOC_FAILURE);
@@ -198,13 +197,3 @@ int bn_set_words(BIGNUM *a, BN_ULONG *words, int num_words)
     bn_correct_top(a);
     return 1;
 }
-
-size_t bn_sizeof_BIGNUM(void)
-{
-    return sizeof(BIGNUM);
-}
-
-BIGNUM *bn_array_el(BIGNUM *base, int el)
-{
-    return &base[el];
-}