mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
eb750219f2
Reviewed-by: Matt Caswell <matt@openssl.org> Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/12013)
90 lines
3.1 KiB
Plaintext
90 lines
3.1 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
EVP_PKEY_missing_parameters, EVP_PKEY_copy_parameters, EVP_PKEY_parameters_eq,
|
|
EVP_PKEY_cmp_parameters, EVP_PKEY_eq,
|
|
EVP_PKEY_cmp - public key parameter and comparison functions
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/evp.h>
|
|
|
|
int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey);
|
|
int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from);
|
|
|
|
int EVP_PKEY_parameters_eq(const EVP_PKEY *a, const EVP_PKEY *b);
|
|
int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b);
|
|
int EVP_PKEY_eq(const EVP_PKEY *a, const EVP_PKEY *b);
|
|
int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
The function EVP_PKEY_missing_parameters() returns 1 if the public key
|
|
parameters of B<pkey> are missing and 0 if they are present or the algorithm
|
|
doesn't use parameters.
|
|
|
|
The function EVP_PKEY_copy_parameters() copies the parameters from key
|
|
B<from> to key B<to>. An error is returned if the parameters are missing in
|
|
B<from> or present in both B<from> and B<to> and mismatch. If the parameters
|
|
in B<from> and B<to> are both present and match this function has no effect.
|
|
|
|
The function EVP_PKEY_parameters_eq() checks the parameters of keys
|
|
B<a> and B<b> for equality.
|
|
|
|
The function EVP_PKEY_eq() checks the public key components and parameters
|
|
(if present) of keys B<a> and B<b> for equality.
|
|
|
|
=head1 NOTES
|
|
|
|
The main purpose of the functions EVP_PKEY_missing_parameters() and
|
|
EVP_PKEY_copy_parameters() is to handle public keys in certificates where the
|
|
parameters are sometimes omitted from a public key if they are inherited from
|
|
the CA that signed it.
|
|
|
|
Since OpenSSL private keys contain public key components too the function
|
|
EVP_PKEY_eq() can also be used to determine if a private key matches
|
|
a public key.
|
|
|
|
EVP_PKEY_cmp() and EVP_PKEY_cmp_parameters() differ in their return values
|
|
compared to other _cmp() functions. They are aliases for EVP_PKEY_eq() and
|
|
EVP_PKEY_parameters_eq() functions provided for backwards compatibility
|
|
with existing applications.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
The function EVP_PKEY_missing_parameters() returns 1 if the public key
|
|
parameters of B<pkey> are missing and 0 if they are present or the algorithm
|
|
doesn't use parameters.
|
|
|
|
These functions EVP_PKEY_copy_parameters() returns 1 for success and 0 for
|
|
failure.
|
|
|
|
The functions EVP_PKEY_cmp_parameters(), EVP_PKEY_parameters_eq(),
|
|
EVP_PKEY_cmp() and EVP_PKEY_eq() return 1 if their
|
|
inputs match, 0 if they don't match, -1 if the key types are different and
|
|
-2 if the operation is not supported.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<EVP_PKEY_CTX_new(3)>,
|
|
L<EVP_PKEY_keygen(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
EVP_PKEY_eq() and EVP_PKEY_parameters_eq() were added in OpenSSL 3.0 to
|
|
avoid confusion on the return values of EVP_PKEY_cmp() and
|
|
EVP_PKEY_cmp_parameters() which unlike other _cmp()
|
|
functions do not return 0 in case their arguments are equal.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2006-2020 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
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|