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1 /*
2  * Copyright (C) 2011 Nokia Corporation
3  * Copyright (C) 2011 Intel Corporation
4  *
5  * Author:
6  * Dmitry Kasatkin <dmitry.kasatkin@nokia.com>
7  *                 <dmitry.kasatkin@intel.com>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation, version 2 of the License.
12  *
13  */
14 
15 #ifndef _DIGSIG_H
16 #define _DIGSIG_H
17 
18 #include <linux/key.h>
19 
20 enum pubkey_algo {
21 	PUBKEY_ALGO_RSA,
22 	PUBKEY_ALGO_MAX,
23 };
24 
25 enum digest_algo {
26 	DIGEST_ALGO_SHA1,
27 	DIGEST_ALGO_SHA256,
28 	DIGEST_ALGO_MAX
29 };
30 
31 struct pubkey_hdr {
32 	uint8_t		version;	/* key format version */
33 	uint32_t	timestamp;	/* key made, always 0 for now */
34 	uint8_t		algo;
35 	uint8_t		nmpi;
36 	char		mpi[0];
37 } __packed;
38 
39 struct signature_hdr {
40 	uint8_t		version;	/* signature format version */
41 	uint32_t	timestamp;	/* signature made */
42 	uint8_t		algo;
43 	uint8_t		hash;
44 	uint8_t		keyid[8];
45 	uint8_t		nmpi;
46 	char		mpi[0];
47 } __packed;
48 
49 #if defined(CONFIG_SIGNATURE) || defined(CONFIG_SIGNATURE_MODULE)
50 
51 int digsig_verify(struct key *keyring, const char *sig, int siglen,
52 					const char *digest, int digestlen);
53 
54 #else
55 
digsig_verify(struct key * keyring,const char * sig,int siglen,const char * digest,int digestlen)56 static inline int digsig_verify(struct key *keyring, const char *sig,
57 				int siglen, const char *digest, int digestlen)
58 {
59 	return -EOPNOTSUPP;
60 }
61 
62 #endif /* CONFIG_SIGNATURE */
63 
64 #endif /* _DIGSIG_H */
65