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.IX Title "EVP_CIPHER_CTX_GET_APP_DATA 3ssl"
.TH EVP_CIPHER_CTX_GET_APP_DATA 3ssl 2026-01-27 3.6.1 OpenSSL
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.SH NAME
EVP_CIPHER_CTX_get_app_data, EVP_CIPHER_CTX_set_app_data \- Routines to
inspect and modify application data related to EVP_CIPHER_CTX
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/evp.h>
\&
\& void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx);
\& void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The functions \fBEVP_CIPHER_CTX_set_app_data()\fR and \fBEVP_CIPHER_CTX_get_app_data()\fR
associate an opaque, application\-defined pointer with an EVP_CIPHER_CTX object.
.PP
This pointer is not interpreted by the library and is reserved entirely for use
by the application. It may be used to store arbitrary context or state that
needs to be accessible wherever the corresponding EVP_CIPHER_CTX is available.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
The \fBEVP_CIPHER_CTX_get_app_data()\fR function returns a opaque pointer to the
current application data for the EVP_CIPHER_CTX.
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2026 The OpenSSL Project Authors. All Rights Reserved.
.PP
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
<https://www.openssl.org/source/license.html>.