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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Signature verification
*
* Copyright (C) 2014 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _LINUX_VERIFICATION_H
#define _LINUX_VERIFICATION_H
#include <linux/errno.h>
#include <linux/types.h>
/*
* Indicate that both builtin trusted keys and secondary trusted keys
* should be used.
*/
#define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL)
#define VERIFY_USE_PLATFORM_KEYRING ((struct key *)2UL)
static inline int system_keyring_id_check(u64 id)
{
if (id > (unsigned long)VERIFY_USE_PLATFORM_KEYRING)
return -EINVAL;
return 0;
}
/*
* The use to which an asymmetric key is being put.
*/
enum key_being_used_for {
VERIFYING_MODULE_SIGNATURE,
VERIFYING_FIRMWARE_SIGNATURE,
VERIFYING_KEXEC_PE_SIGNATURE,
VERIFYING_KEY_SIGNATURE,
VERIFYING_KEY_SELF_SIGNATURE,
VERIFYING_UNSPECIFIED_SIGNATURE,
NR__KEY_BEING_USED_FOR
};
extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR];
#ifdef CONFIG_SYSTEM_DATA_VERIFICATION
struct key;
struct pkcs7_message;
extern int verify_pkcs7_signature(const void *data, size_t len,
const void *raw_pkcs7, size_t pkcs7_len,
struct key *trusted_keys,
enum key_being_used_for usage,
int (*view_content)(void *ctx,
const void *data, size_t len,
size_t asn1hdrlen),
void *ctx);
extern int verify_pkcs7_message_sig(const void *data, size_t len,
struct pkcs7_message *pkcs7,
struct key *trusted_keys,
enum key_being_used_for usage,
int (*view_content)(void *ctx,
const void *data,
size_t len,
size_t asn1hdrlen),
void *ctx);
#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION
extern int verify_pefile_signature(const void *pebuf, unsigned pelen,
struct key *trusted_keys,
enum key_being_used_for usage);
#endif
#endif /* CONFIG_SYSTEM_DATA_VERIFICATION */
#endif /* _LINUX_VERIFY_PEFILE_H */
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