=head1 NAME
-BN_new, BN_init, BN_clear, BN_free, BN_clear_free - allocate and free BIGNUMs
+BN_new, BN_secure_new, BN_clear, BN_free, BN_clear_free - allocate and free BIGNUMs
=head1 SYNOPSIS
BIGNUM *BN_new(void);
- void BN_init(BIGNUM *);
+ BIGNUM *BN_secure_new(void);
void BN_clear(BIGNUM *a);
=head1 DESCRIPTION
-BN_new() allocated and initializes a B<BIGNUM> structure. BN_init()
-initializes an existing uninitialized B<BIGNUM>.
+BN_new() allocates and initializes a B<BIGNUM> structure.
+BN_secure_new() does the same except that the secure heap
+OPENSSL_secure_malloc(3) is used to store the value.
BN_clear() is used to destroy sensitive data such as keys when they
are no longer needed. It erases the memory used by B<a> and sets it
BN_free() frees the components of the B<BIGNUM>, and if it was created
by BN_new(), also the structure itself. BN_clear_free() additionally
overwrites the data before the memory is returned to the system.
+If B<a> is NULL, nothing is done.
=head1 RETURN VALUES
-BN_new() returns a pointer to the B<BIGNUM>. If the allocation fails,
-it returns B<NULL> and sets an error code that can be obtained
-by ERR_get_error(3).
+BN_new() and BN_secure_new()
+return a pointer to the B<BIGNUM>. If the allocation fails,
+they return B<NULL> and set an error code that can be obtained
+by L<ERR_get_error(3)>.
-BN_init(), BN_clear(), BN_free() and BN_clear_free() have no return
-values.
+BN_clear(), BN_free() and BN_clear_free() have no return values.
=head1 SEE ALSO
-bn(3), err(3)
+L<bn(3)>, L<ERR_get_error(3)>
=head1 HISTORY
-BN_new(), BN_clear(), BN_free() and BN_clear_free() are availabe in
-all versions on SSLeay and OpenSSL. BN_init() was added in SSLeay
-0.9.1b.
+BN_init() was removed in OpenSSL 1.1.0; use BN_new() instead.
+
+=head1 COPYRIGHT
+
+Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (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
+L<https://www.openssl.org/source/license.html>.
=cut