.\" $OpenBSD: OpenSSL_add_all_algorithms.3,v 1.19 2025/06/12 15:59:30 schwarze Exp $ .\" full merge up to: OpenSSL b3696a55 Sep 2 09:35:50 2017 -0400 .\" .\" This file is a derived work. .\" The changes are covered by the following Copyright and license: .\" .\" Copyright (c) 2018, 2019, 2023, 2025 Ingo Schwarze .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. 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IN NO EVENT SHALL THE OpenSSL PROJECT OR .\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, .\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; .\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, .\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED .\" OF THE POSSIBILITY OF SUCH DAMAGE. .\" .Dd $Mdocdate: June 12 2025 $ .Dt OPENSSL_ADD_ALL_ALGORITHMS 3 .Os .Sh NAME .Nm OpenSSL_add_all_algorithms , .Nm OpenSSL_add_all_ciphers , .Nm OpenSSL_add_all_digests , .Nm EVP_cleanup , .Nm SSLeay_add_all_algorithms .\" .Nm OPENSSL_add_all_algorithms_conf , .\" .Nm OPENSSL_add_all_algorithms_noconf , .\" .Nm SSLeay_add_all_ciphers , and .\" .Nm SSLeay_add_all_digests are intentionally undocumented .\" because they are unused aliases. .Nd add algorithms to internal table .Sh SYNOPSIS .Lb libcrypto .In openssl/evp.h .Ft void .Fn OpenSSL_add_all_algorithms void .Ft void .Fn OpenSSL_add_all_ciphers void .Ft void .Fn OpenSSL_add_all_digests void .Ft void .Fn EVP_cleanup void .Ft void .Fn SSLeay_add_all_algorithms void .Sh DESCRIPTION These functions are deprecated. It is never useful for any application program to call any of them explicitly. Most of them have no effect except that they may or may not call .Xr OPENSSL_init_crypto 3 . .Pp The library contains internal tables of digest algorithms and ciphers. It uses these tables to look up digests and ciphers via .Xr EVP_get_digestbyname 3 and .Xr EVP_get_cipherbyname 3 , respectively. In LibreSSL, these tables are static constants and do not require initialization. .Pp .Fn OpenSSL_add_all_algorithms used to add all digests and ciphers to the tables. If an application is compiled with the preprocessor symbol .Dv OPENSSL_LOAD_CONF defined, it also calls .Xr OPENSSL_config 3 with a .Dv NULL argument, loading the default configuration file. Relying on this behaviour is not recommended. If loading a configuration file is desired, call .Xr OPENSSL_config 3 or .Xr CONF_modules_load_file 3 directly. .Pp .Fn OpenSSL_add_all_digests used to add all digest algorithms to the table. .Pp .Fn OpenSSL_add_all_ciphers used to add all encryption algorithms to the table. .Pp .Fn EVP_cleanup has no effect; it used to remove various kinds of application-supplied data that is no longer supported in the first place. .Pp .Fn SSLeay_add_all_algorithms is a deprecated alias for .Fn OpenSSL_add_all_algorithms . .Pp .Fn OpenSSL_add_all_algorithms and .Fn SSLeay_add_all_algorithms are implemented as macros. .Sh SEE ALSO .Xr evp 3 , .Xr EVP_DigestInit 3 , .Xr EVP_EncryptInit 3 , .Xr OPENSSL_config 3 .Sh HISTORY .Fn EVP_cleanup , .Fn SSLeay_add_all_algorithms , and precursor functions .Fn SSLeay_add_all_ciphers and .Fn SSLeay_add_all_digests first appeared in SSLeay 0.8.0 and have been available since .Ox 2.4 . .Pp .Fn OpenSSL_add_all_algorithms , .Fn OpenSSL_add_all_ciphers , and .Fn OpenSSL_add_all_digests first appeared in OpenSSL 0.9.5 and have been available since .Ox 2.7 . .Sh BUGS Although the functions do not return error codes, it is possible for them to fail.