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linux-next/include/crypto/public_key.h
Mat Martineau aaf66c8838 KEYS: Split role of the keyring pointer for keyring restrict functions
The first argument to the restrict_link_func_t functions was a keyring
pointer. These functions are called by the key subsystem with this
argument set to the destination keyring, but restrict_link_by_signature
expects a pointer to the relevant trusted keyring.

Restrict functions may need something other than a single struct key
pointer to allow or reject key linkage, so the data used to make that
decision (such as the trust keyring) is moved to a new, fourth
argument. The first argument is now always the destination keyring.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
2017-04-03 10:24:56 -07:00

65 lines
1.7 KiB
C

/* Asymmetric public-key algorithm definitions
*
* See Documentation/crypto/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 _LINUX_PUBLIC_KEY_H
#define _LINUX_PUBLIC_KEY_H
/*
* Cryptographic data for the public-key subtype of the asymmetric key type.
*
* Note that this may include private part of the key as well as the public
* part.
*/
struct public_key {
void *key;
u32 keylen;
const char *id_type;
const char *pkey_algo;
};
extern void public_key_free(struct public_key *key);
/*
* Public key cryptography signature data
*/
struct public_key_signature {
struct asymmetric_key_id *auth_ids[2];
u8 *s; /* Signature */
u32 s_size; /* Number of bytes in signature */
u8 *digest;
u8 digest_size; /* Number of bytes in digest */
const char *pkey_algo;
const char *hash_algo;
};
extern void public_key_signature_free(struct public_key_signature *sig);
extern struct asymmetric_key_subtype public_key_subtype;
struct key;
struct key_type;
union key_payload;
extern int restrict_link_by_signature(struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *trust_keyring);
extern int verify_signature(const struct key *key,
const struct public_key_signature *sig);
int public_key_verify_signature(const struct public_key *pkey,
const struct public_key_signature *sig);
#endif /* _LINUX_PUBLIC_KEY_H */