Merge tag 'gvt-fixes-2019-11-12' of https://github.com/intel/gvt-linux into drm-intel...
[linux-2.6-block.git] / include / linux / digsig.h
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b886d83c 1/* SPDX-License-Identifier: GPL-2.0-only */
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2/*
3 * Copyright (C) 2011 Nokia Corporation
4 * Copyright (C) 2011 Intel Corporation
5 *
6 * Author:
7 * Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
8 * <dmitry.kasatkin@intel.com>
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9 */
10
11#ifndef _DIGSIG_H
12#define _DIGSIG_H
13
14#include <linux/key.h>
15
16enum pubkey_algo {
17 PUBKEY_ALGO_RSA,
18 PUBKEY_ALGO_MAX,
19};
20
21enum digest_algo {
22 DIGEST_ALGO_SHA1,
23 DIGEST_ALGO_SHA256,
24 DIGEST_ALGO_MAX
25};
26
27struct pubkey_hdr {
28 uint8_t version; /* key format version */
59cca653 29 uint32_t timestamp; /* key made, always 0 for now */
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30 uint8_t algo;
31 uint8_t nmpi;
32 char mpi[0];
33} __packed;
34
35struct signature_hdr {
36 uint8_t version; /* signature format version */
59cca653 37 uint32_t timestamp; /* signature made */
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38 uint8_t algo;
39 uint8_t hash;
40 uint8_t keyid[8];
41 uint8_t nmpi;
42 char mpi[0];
43} __packed;
44
5e8898e9 45#if defined(CONFIG_SIGNATURE) || defined(CONFIG_SIGNATURE_MODULE)
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46
47int digsig_verify(struct key *keyring, const char *sig, int siglen,
48 const char *digest, int digestlen);
49
50#else
51
52static inline int digsig_verify(struct key *keyring, const char *sig,
53 int siglen, const char *digest, int digestlen)
54{
55 return -EOPNOTSUPP;
56}
57
5e8898e9 58#endif /* CONFIG_SIGNATURE */
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59
60#endif /* _DIGSIG_H */