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a9681bf3 DH |
1 | /* Asymmetric public-key algorithm definitions |
2 | * | |
3 | * See Documentation/crypto/asymmetric-keys.txt | |
4 | * | |
5 | * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. | |
6 | * Written by David Howells (dhowells@redhat.com) | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public Licence | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the Licence, or (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #ifndef _LINUX_PUBLIC_KEY_H | |
15 | #define _LINUX_PUBLIC_KEY_H | |
16 | ||
99db4435 DH |
17 | /* |
18 | * The use to which an asymmetric key is being put. | |
19 | */ | |
20 | enum key_being_used_for { | |
21 | VERIFYING_MODULE_SIGNATURE, | |
22 | VERIFYING_FIRMWARE_SIGNATURE, | |
23 | VERIFYING_KEXEC_PE_SIGNATURE, | |
24 | VERIFYING_KEY_SIGNATURE, | |
25 | VERIFYING_KEY_SELF_SIGNATURE, | |
26 | VERIFYING_UNSPECIFIED_SIGNATURE, | |
27 | NR__KEY_BEING_USED_FOR | |
28 | }; | |
29 | extern const char *const key_being_used_for[NR__KEY_BEING_USED_FOR]; | |
30 | ||
a9681bf3 DH |
31 | /* |
32 | * Cryptographic data for the public-key subtype of the asymmetric key type. | |
33 | * | |
34 | * Note that this may include private part of the key as well as the public | |
35 | * part. | |
36 | */ | |
37 | struct public_key { | |
db6c43bd TS |
38 | void *key; |
39 | u32 keylen; | |
4e8ae72a DH |
40 | const char *id_type; |
41 | const char *pkey_algo; | |
a9681bf3 DH |
42 | }; |
43 | ||
3b764563 | 44 | extern void public_key_free(struct public_key *key); |
a9681bf3 DH |
45 | |
46 | /* | |
47 | * Public key cryptography signature data | |
48 | */ | |
49 | struct public_key_signature { | |
db6c43bd TS |
50 | u8 *s; /* Signature */ |
51 | u32 s_size; /* Number of bytes in signature */ | |
a9681bf3 | 52 | u8 *digest; |
d846e78e | 53 | u8 digest_size; /* Number of bytes in digest */ |
4e8ae72a DH |
54 | const char *pkey_algo; |
55 | const char *hash_algo; | |
a9681bf3 DH |
56 | }; |
57 | ||
3b764563 DH |
58 | extern void public_key_signature_free(struct public_key_signature *sig); |
59 | ||
db6c43bd | 60 | extern struct asymmetric_key_subtype public_key_subtype; |
3b764563 | 61 | |
4ae71c1d DH |
62 | struct key; |
63 | extern int verify_signature(const struct key *key, | |
64 | const struct public_key_signature *sig); | |
65 | ||
46963b77 | 66 | struct asymmetric_key_id; |
5ce43ad2 | 67 | extern struct key *x509_request_asymmetric_key(struct key *keyring, |
4573b64a DH |
68 | const struct asymmetric_key_id *id, |
69 | const struct asymmetric_key_id *skid, | |
f1b731db | 70 | bool partial); |
5ce43ad2 | 71 | |
db6c43bd TS |
72 | int public_key_verify_signature(const struct public_key *pkey, |
73 | const struct public_key_signature *sig); | |
74 | ||
a9681bf3 | 75 | #endif /* _LINUX_PUBLIC_KEY_H */ |