bn_mod_exp: we have a BN_CTX available...

Use BN_CTX_get() instead of BN_new()/BN_free().

1 files changed, 15 insertions, 19 deletions

diff --git a/src/regress/lib/libcrypto/bn/bn_mod_exp.c b/src/regress/lib/libcrypto/bn/bn_mod_exp.c
index d12d9f1e05..591d603182 100644
--- a/src/regress/lib/libcrypto/bn/bn_mod_exp.c
+++ b/src/regress/lib/libcrypto/bn/bn_mod_exp.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: bn_mod_exp.c,v 1.3 2022/12/02 17:42:45 tb Exp $       */
+/*      $OpenBSD: bn_mod_exp.c,v 1.4 2022/12/02 18:24:01 tb Exp $       */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -82,23 +82,26 @@ main(int argc, char *argv[])
 
         if ((ctx = BN_CTX_new()) == NULL)
                 goto err;
-        if ((r_mont = BN_new()) == NULL)
+
+        BN_CTX_start(ctx);
+
+        if ((r_mont = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((r_mont_const = BN_new()) == NULL)
+        if ((r_mont_const = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((r_mont_ct = BN_new()) == NULL)
+        if ((r_mont_ct = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((r_mont_nonct = BN_new()) == NULL)
+        if ((r_mont_nonct = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((r_recp = BN_new()) == NULL)
+        if ((r_recp = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((r_simple = BN_new()) == NULL)
+        if ((r_simple = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((a = BN_new()) == NULL)
+        if ((a = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((b = BN_new()) == NULL)
+        if ((b = BN_CTX_get(ctx)) == NULL)
                 goto err;
-        if ((m = BN_new()) == NULL)
+        if ((m = BN_CTX_get(ctx)) == NULL)
                 goto err;
 
         if ((out = BIO_new(BIO_s_file())) == NULL)
@@ -194,15 +197,8 @@ main(int argc, char *argv[])
                         exit(1);
                 }
         }
-        BN_free(r_mont);
-        BN_free(r_mont_const);
-        BN_free(r_mont_ct);
-        BN_free(r_mont_nonct);
-        BN_free(r_recp);
-        BN_free(r_simple);
-        BN_free(a);
-        BN_free(b);
-        BN_free(m);
+
+        BN_CTX_end(ctx);
         BN_CTX_free(ctx);
         ERR_remove_thread_state(NULL);
         CRYPTO_mem_leaks(out);