+++ /dev/null
-=pod
-
-=head1 NAME
-
-DH_set_default_method, DH_get_default_method,
-DH_set_method, DH_new_method, DH_OpenSSL - select DH method
-
-=head1 SYNOPSIS
-
- #include <openssl/dh.h>
-
- void DH_set_default_method(const DH_METHOD *meth);
-
- const DH_METHOD *DH_get_default_method(void);
-
- int DH_set_method(DH *dh, const DH_METHOD *meth);
-
- DH *DH_new_method(ENGINE *engine);
-
- const DH_METHOD *DH_OpenSSL(void);
-
-=head1 DESCRIPTION
-
-A B<DH_METHOD> specifies the functions that OpenSSL uses for Diffie-Hellman
-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 DH API functions are affected by the use
-of B<ENGINE> API calls.
-
-Initially, the default DH_METHOD is the OpenSSL internal implementation, as
-returned by DH_OpenSSL().
-
-DH_set_default_method() makes B<meth> the default method for all DH
-structures created later. B<NB>: This is true only whilst no ENGINE has been set
-as a default for DH, so this function is no longer recommended.
-
-DH_get_default_method() returns a pointer to the current default DH_METHOD.
-However, the meaningfulness of this result is dependent on whether the ENGINE
-API is being used, so this function is no longer recommended.
-
-DH_set_method() selects B<meth> to perform all operations using the key B<dh>.
-This will replace the DH_METHOD used by the DH 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 DH keys that only work with certain DH_METHOD
-implementations (eg. from an ENGINE module that supports embedded
-hardware-protected keys), and in such cases attempting to change the DH_METHOD
-for the key can have unexpected results.
-
-DH_new_method() allocates and initializes a DH structure so that B<engine> will
-be used for the DH operations. If B<engine> is NULL, the default ENGINE for DH
-operations is used, and if no default ENGINE is set, the DH_METHOD controlled by
-DH_set_default_method() is used.
-
-A new DH_METHOD object may be constructed using DH_meth_new() (see
-L<DH_meth_new(3)>).
-
-=head1 RETURN VALUES
-
-DH_OpenSSL() and DH_get_default_method() return pointers to the respective
-B<DH_METHOD>s.
-
-DH_set_default_method() returns no value.
-
-DH_set_method() returns non-zero if the provided B<meth> was successfully set as
-the method for B<dh> (including unloading the ENGINE handle if the previous
-method was supplied by an ENGINE).
-
-DH_new_method() returns NULL and sets an error code that can be obtained by
-L<ERR_get_error(3)> if the allocation fails. Otherwise it
-returns a pointer to the newly allocated structure.
-
-=head1 SEE ALSO
-
-L<dh(3)>, L<DH_new(3)>, L<DH_meth_new(3)>
-
-=head1 COPYRIGHT
-
-Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
-
-Licensed under the OpenSSL license (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
-L<https://www.openssl.org/source/license.html>.
-
-=cut
projects / openssl.git / blobdiff