1EVP_CIPHER_CTX_GET_CIPHER_DATA(3)   OpenSSL  EVP_CIPHER_CTX_GET_CIPHER_DATA(3)
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NAME

6       EVP_CIPHER_CTX_get_cipher_data, EVP_CIPHER_CTX_set_cipher_data -
7       Routines to inspect and modify EVP_CIPHER_CTX objects
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SYNOPSIS

10        #include <openssl/evp.h>
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12        void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx);
13        void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data);
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DESCRIPTION

16       The EVP_CIPHER_CTX_get_cipher_data() function returns a pointer to the
17       cipher data relevant to EVP_CIPHER_CTX. The contents of this data is
18       specific to the particular implementation of the cipher. For example
19       this data can be used by engines to store engine specific information.
20       The data is automatically allocated and freed by OpenSSL, so
21       applications and engines should not normally free this directly (but
22       see below).
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24       The EVP_CIPHER_CTX_set_cipher_data() function allows an application or
25       engine to replace the cipher data with new data. A pointer to any
26       existing cipher data is returned from this function. If the old data is
27       no longer required then it should be freed through a call to
28       OPENSSL_free().
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RETURN VALUES

31       The EVP_CIPHER_CTX_get_cipher_data() function returns a pointer to the
32       current cipher data for the EVP_CIPHER_CTX.
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34       The EVP_CIPHER_CTX_set_cipher_data() function returns a pointer to the
35       old cipher data for the EVP_CIPHER_CTX.
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HISTORY

38       The EVP_CIPHER_CTX_get_cipher_data() and
39       EVP_CIPHER_CTX_set_cipher_data() functions were added in OpenSSL 1.1.0.
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42       Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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44       Licensed under the OpenSSL license (the "License").  You may not use
45       this file except in compliance with the License.  You can obtain a copy
46       in the file LICENSE in the source distribution or at
47       <https://www.openssl.org/source/license.html>.
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511.1.1q                            2023-07-20 EVP_CIPHER_CTX_GET_CIPHER_DATA(3)
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