EVP_CIPHER_CTX_get_cipher_data(category30-tips-tricks-fragen.html) - phpMan

EVP_CIPHER_CTX_GET_CIPHER_DATA(3)   OpenSSL  EVP_CIPHER_CTX_GET_CIPHER_DATA(3)
NAME
       EVP_CIPHER_CTX_get_cipher_data, EVP_CIPHER_CTX_set_cipher_data -
       Routines to inspect and modify EVP_CIPHER_CTX objects
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);
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().
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.
HISTORY
       The EVP_CIPHER_CTX_get_cipher_data() and
       EVP_CIPHER_CTX_set_cipher_data() functions were added in OpenSSL 1.1.0.
COPYRIGHT
       Copyright 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
       <https://www.openssl.org/source/license.html>;.
1.1.1k                            2021-03-25 EVP_CIPHER_CTX_GET_CIPHER_DATA(3)