You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.5 KiB
52 lines
1.5 KiB
=pod |
|
|
|
=head1 NAME |
|
|
|
EVP_PKEY_CTX_new, EVP_PKEY_CTX_new_id, EVP_PKEY_CTX_dup, EVP_PKEY_CTX_free - public key algorithm context functions. |
|
|
|
=head1 SYNOPSIS |
|
|
|
#include <openssl/evp.h> |
|
|
|
EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e); |
|
EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e); |
|
EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx); |
|
void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx); |
|
|
|
=head1 DESCRIPTION |
|
|
|
The EVP_PKEY_CTX_new() function allocates public key algorithm context using |
|
the algorithm specified in B<pkey> and ENGINE B<e>. |
|
|
|
The EVP_PKEY_CTX_new_id() function allocates public key algorithm context |
|
using the algorithm specified by B<id> and ENGINE B<e>. It is normally used |
|
when no B<EVP_PKEY> structure is associated with the operations, for example |
|
during parameter generation of key genration for some algorithms. |
|
|
|
EVP_PKEY_CTX_dup() duplicates the context B<ctx>. |
|
|
|
EVP_PKEY_CTX_free() frees up the context B<ctx>. |
|
|
|
=head1 NOTES |
|
|
|
The B<EVP_PKEY_CTX> structure is an opaque public key algorithm context used |
|
by the OpenSSL high level public key API. Contexts B<MUST NOT> be shared between |
|
threads: that is it is not permissible to use the same context simultaneously |
|
in two threads. |
|
|
|
=head1 RETURN VALUES |
|
|
|
EVP_PKEY_CTX_new(), EVP_PKEY_CTX_new_id(), EVP_PKEY_CTX_dup() returns either |
|
the newly allocated B<EVP_PKEY_CTX> structure of B<NULL> if an error occurred. |
|
|
|
EVP_PKEY_CTX_free() does not return a value. |
|
|
|
=head1 SEE ALSO |
|
|
|
L<EVP_PKEY_new(3)|EVP_PKEY_new(3)> |
|
|
|
=head1 HISTORY |
|
|
|
These functions were first added to OpenSSL 1.0.0. |
|
|
|
=cut
|
|
|