mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
4746f25ac6
[skip ci] Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7829)
52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
EVP_CIPHER_CTX_get_cipher_data, EVP_CIPHER_CTX_set_cipher_data - Routines to
|
|
inspect and modify EVP_CIPHER_CTX objects
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/evp.h>
|
|
|
|
void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx);
|
|
void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The EVP_CIPHER_CTX_get_cipher_data() function returns a pointer to the cipher
|
|
data relevant to EVP_CIPHER_CTX. The contents of this data is specific to the
|
|
particular implementation of the cipher. For example this data can be used by
|
|
engines to store engine specific information. The data is automatically
|
|
allocated and freed by OpenSSL, so applications and engines should not normally
|
|
free this directly (but see below).
|
|
|
|
The EVP_CIPHER_CTX_set_cipher_data() function allows an application or engine to
|
|
replace the cipher data with new data. A pointer to any existing cipher data is
|
|
returned from this function. If the old data is no longer required then it
|
|
should be freed through a call to OPENSSL_free().
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
The EVP_CIPHER_CTX_get_cipher_data() function returns a pointer to the current
|
|
cipher data for the EVP_CIPHER_CTX.
|
|
|
|
The EVP_CIPHER_CTX_set_cipher_data() function returns a pointer to the old
|
|
cipher data for the EVP_CIPHER_CTX.
|
|
|
|
=head1 HISTORY
|
|
|
|
The EVP_CIPHER_CTX_get_cipher_data() and EVP_CIPHER_CTX_set_cipher_data()
|
|
functions were added in OpenSSL 1.1.0.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2016 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
|