mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 22:02:28 +00:00
f1b731dbc2
Bring back the functionality whereby an asymmetric key can be matched with a partial match on one of its IDs. Whilst we're at it, allow for the possibility of having an increased number of IDs. Reported-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by: David Howells <dhowells@redhat.com>
67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/* Asymmetric Public-key cryptography key type interface
|
|
*
|
|
* See Documentation/security/asymmetric-keys.txt
|
|
*
|
|
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _KEYS_ASYMMETRIC_TYPE_H
|
|
#define _KEYS_ASYMMETRIC_TYPE_H
|
|
|
|
#include <linux/key-type.h>
|
|
|
|
extern struct key_type key_type_asymmetric;
|
|
|
|
/*
|
|
* Identifiers for an asymmetric key ID. We have three ways of looking up a
|
|
* key derived from an X.509 certificate:
|
|
*
|
|
* (1) Serial Number & Issuer. Non-optional. This is the only valid way to
|
|
* map a PKCS#7 signature to an X.509 certificate.
|
|
*
|
|
* (2) Issuer & Subject Unique IDs. Optional. These were the original way to
|
|
* match X.509 certificates, but have fallen into disuse in favour of (3).
|
|
*
|
|
* (3) Auth & Subject Key Identifiers. Optional. SKIDs are only provided on
|
|
* CA keys that are intended to sign other keys, so don't appear in end
|
|
* user certificates unless forced.
|
|
*
|
|
* We could also support an PGP key identifier, which is just a SHA1 sum of the
|
|
* public key and certain parameters, but since we don't support PGP keys at
|
|
* the moment, we shall ignore those.
|
|
*
|
|
* What we actually do is provide a place where binary identifiers can be
|
|
* stashed and then compare against them when checking for an id match.
|
|
*/
|
|
struct asymmetric_key_id {
|
|
unsigned short len;
|
|
unsigned char data[];
|
|
};
|
|
|
|
struct asymmetric_key_ids {
|
|
void *id[2];
|
|
};
|
|
|
|
extern bool asymmetric_key_id_same(const struct asymmetric_key_id *kid1,
|
|
const struct asymmetric_key_id *kid2);
|
|
|
|
extern bool asymmetric_key_id_partial(const struct asymmetric_key_id *kid1,
|
|
const struct asymmetric_key_id *kid2);
|
|
|
|
extern struct asymmetric_key_id *asymmetric_key_generate_id(const void *val_1,
|
|
size_t len_1,
|
|
const void *val_2,
|
|
size_t len_2);
|
|
|
|
/*
|
|
* The payload is at the discretion of the subtype.
|
|
*/
|
|
|
|
#endif /* _KEYS_ASYMMETRIC_TYPE_H */
|