mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-02 13:03:28 +01:00
65 lines
1.6 KiB
Plaintext
65 lines
1.6 KiB
Plaintext
|
=pod
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
BN_new, BN_secure_new, BN_clear, BN_free, BN_clear_free - allocate and free BIGNUMs
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
#include <openssl/bn.h>
|
||
|
|
|
||
|
|
BIGNUM *BN_new(void);
|
||
|
|
|
||
|
|
BIGNUM *BN_secure_new(void);
|
||
|
|
|
||
|
|
void BN_clear(BIGNUM *a);
|
||
|
|
|
||
|
|
void BN_free(BIGNUM *a);
|
||
|
|
|
||
|
|
void BN_clear_free(BIGNUM *a);
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
BN_new() allocates and initializes a B<BIGNUM> structure.
|
||
|
|
BN_secure_new() does the same except that the secure heap
|
||
|
|
L<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
|
||
|
|
to the value 0.
|
||
|
|
If B<a> is NULL, nothing is done.
|
||
|
|
|
||
|
|
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() and BN_secure_new()
|
||
|
|
return a pointer to the B<BIGNUM> initialised to the value 0.
|
||
|
|
If the allocation fails,
|
||
|
|
they return B<NULL> and set an error code that can be obtained
|
||
|
|
by L<ERR_get_error(3)>.
|
||
|
|
|
||
|
|
BN_clear(), BN_free() and BN_clear_free() have no return values.
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<ERR_get_error(3)>, L<OPENSSL_secure_malloc(3)>
|
||
|
|
|
||
|
|
=head1 HISTORY
|
||
|
|
|
||
|
|
BN_init() was removed in OpenSSL 1.1.0; use BN_new() instead.
|
||
|
|
|
||
|
|
=head1 COPYRIGHT
|
||
|
|
|
||
|
|
Copyright 2000-2017 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
|
||
|
|
in the file LICENSE in the source distribution or at
|
||
|
|
L<https://www.openssl.org/source/license.html>.
|
||
|
|
|
||
|
|
=cut
|