DSA_SET_METHOD(3ossl) OpenSSL DSA_SET_METHOD(3ossl)
NAME
DSA_set_default_method, DSA_get_default_method, DSA_set_method,
DSA_new_method, DSA_OpenSSL - select DSA method
SYNOPSIS
#include <openssl/dsa.h>
The following functions have been deprecated since OpenSSL 3.0, and can
be hidden entirely by defining OPENSSL_API_COMPAT with a suitable
version value, see openssl_user_macros(7):
void DSA_set_default_method(const DSA_METHOD *meth);
const DSA_METHOD *DSA_get_default_method(void);
int DSA_set_method(DSA *dsa, const DSA_METHOD *meth);
DSA *DSA_new_method(ENGINE *engine);
const DSA_METHOD *DSA_OpenSSL(void);
DESCRIPTION
All of the functions described on this page are deprecated.
Applications should providers instead of method overrides.
A DSA_METHOD specifies the functions that OpenSSL uses for DSA
operations. By modifying the method, alternative implementations such
as hardware accelerators may be used. IMPORTANT: See the NOTES section
for important information about how these DSA API functions are
affected by the use of ENGINE API calls.
Initially, the default DSA_METHOD is the OpenSSL internal
implementation, as returned by DSA_OpenSSL().
DSA_set_default_method() makes meth the default method for all DSA
structures created later. NB: This is true only whilst no ENGINE has
been set as a default for DSA, so this function is no longer
recommended. This function is not thread-safe and should not be called
at the same time as other OpenSSL functions.
DSA_get_default_method() returns a pointer to the current default
DSA_METHOD. However, the meaningfulness of this result is dependent on
whether the ENGINE API is being used, so this function is no longer
recommended.
DSA_set_method(3) selects meth to perform all operations using the key
rsa. This will replace the DSA_METHOD used by the DSA key and if the
previous method was supplied by an ENGINE, the handle to that ENGINE
will be released during the change. It is possible to have DSA keys
that only work with certain DSA_METHOD implementations (e.g. from an
ENGINE module that supports embedded hardware-protected keys), and in
such cases attempting to change the DSA_METHOD for the key can have
unexpected results. See DSA_meth_new(3) for information on constructing
custom DSA_METHOD objects;
DSA_new_method() allocates and initializes a DSA structure so that
engine will be used for the DSA operations. If engine is NULL, the
default engine for DSA operations is used, and if no default ENGINE is
set, the DSA_METHOD controlled by DSA_set_default_method() is used.
RETURN VALUES
DSA_OpenSSL() and DSA_get_default_method() return pointers to the
respective DSA_METHODs.
DSA_set_default_method() returns no value.
DSA_set_method(3) returns nonzero if the provided meth was successfully
set as the method for dsa (including unloading the ENGINE handle if the
previous method was supplied by an ENGINE).
DSA_new_method() returns NULL and sets an error code that can be
obtained by ERR_get_error(3) if the allocation fails. Otherwise it
returns a pointer to the newly allocated structure.
SEE ALSO
DSA_new(3), DSA_new(3), DSA_meth_new(3)
HISTORY
All of these functions were deprecated in OpenSSL 3.0.
COPYRIGHT
Copyright 2000-2021 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>.
3.3.2 2024-09-04 DSA_SET_METHOD(3ossl)
openssl 3.3.2 - Generated Mon Sep 9 18:16:27 CDT 2024