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.\" $OpenBSD: OBJ_add_sigid.3,v 1.1 2021/12/18 17:47:45 schwarze Exp $
.\"
.\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org>
.\"
.\" 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. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: December 18 2021 $
.Dt OBJ_ADD_SIGID 3
.Os
.Sh NAME
.Nm OBJ_add_sigid ,
.Nm OBJ_sigid_free ,
.Nm OBJ_find_sigid_algs ,
.Nm OBJ_find_sigid_by_algs
.Nd signature algorithm mappings
.Sh SYNOPSIS
.In openssl/objects.h
.Ft int
.Fo OBJ_add_sigid
.Fa "int signature"
.Fa "int digest"
.Fa "int encryption"
.Fc
.Ft void
.Fn OBJ_sigid_free void
.Ft int
.Fo OBJ_find_sigid_algs
.Fa "int signature"
.Fa "int *pdigest"
.Fa "int *pencryption"
.Fc
.Ft int
.Fo OBJ_find_sigid_by_algs
.Fa "int *psignature"
.Fa "int digest"
.Fa "int encryption"
.Fc
.Sh DESCRIPTION
.Fn OBJ_add_sigid
defines the
.Fa signature
algorithm to use the specified
.Fa digest
and
.Fa encryption
algorithms.
Making sure that this does not conflict with earlier invocations of
.Fn OBJ_add_sigid
is the responsibility of the caller.
Definitions made with
.Fn OBJ_add_sigid
take precedence over definitions built into the library.
.Pp
.Fn OBJ_sigid_free
deletes all definitions made with
.Fn OBJ_add_sigid .
.Pp
.Fn OBJ_find_sigid_algs
looks up the
.Fa signature
algorithm.
If it is found, the associated digest algorithm is stored in
.Pf * Fa pdigest
unless
.Fa pdigest
is a
.Dv NULL
pointer, and the associated encryption algorithm is stored in
.Pf * Fa pencryption
unless
.Fa pencryption
is a
.Dv NULL
pointer.
.Pp
.Fn OBJ_find_sigid_by_algs
looks up the pair
.Pq Fa digest , encryption .
If it is found, the associated signature algorithm is stored in
.Pf * Fa psignature
unless
.Fa psignature
is a
.Dv NULL
pointer.
.Sh RETURN VALUES
.Fn OBJ_add_sigid
returns 1 on success or 0 if memory allocation fails.
.Pp
.Fn OBJ_find_sigid_algs
returns 1 if a definition of the
.Fa signature
algorithm is found or 0 if a definition of the
.Fa signature
algorithm is neither built into the library nor provided with
.Fn OBJ_add_sigid .
.Pp
.Fn OBJ_find_sigid_by_algs
returns 1 if a signature algorithm using the specified
.Fa digest
and
.Fa encryption
algorithms is defined or 0 if the definition of such an algorithm
is neither built into the library nor provided with
.Fn OBJ_add_sigid .
.Sh SEE ALSO
.Xr EVP_cleanup 3 ,
.Xr OBJ_create 3 ,
.Xr OBJ_NAME_add 3 ,
.Xr OBJ_nid2obj 3
.Sh HISTORY
These functions first appeared in OpenSSL 1.0.0
and have been available since
.Ox 4.9 .
|
