OpenSSL

Cryptography and SSL/TLS Toolkit

OPENSSL_CTX

NAME

OPENSSL_CTX, OPENSSL_CTX_new, OPENSSL_CTX_free - OpenSSL library context

SYNOPSIS

 #include <openssl/crypto.h>

 typedef struct openssl_ctx_st OPENSSL_CTX;

 OPENSSL_CTX *OPENSSL_CTX_new(void);
 void OPENSSL_CTX_free(OPENSSL_CTX *ctx);

DESCRIPTION

OPENSSL_CTX is an internal OpenSSL library context type. Applications may allocate their own, but may also use NULL to use the internal default context with functions that take a OPENSSL_CTX argument.

OPENSSL_CTX_new() creates a new OpenSSL library context. When a non default library context is in use care should be taken with multi-threaded applications to properly clean up thread local resources before the OPENSSL_CTX is freed. See OPENSSL_thread_stop_ex(3) for more information.

OPENSSL_CTX_free() frees the given ctx.

RETURN VALUES

OPENSSL_CTX_new() return a library context pointer on success, or NULL on error.

OPENSSL_CTX_free() doesn't return any value.

HISTORY

OPENSSL_CTX, OPENSSL_CTX_new() and OPENSSL_CTX_free() were added in OpenSSL 3.0.

Copyright 2019 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 https://www.openssl.org/source/license.html.