David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 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 | |
David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 17 | /* |
| 18 | * Cryptographic data for the public-key subtype of the asymmetric key type. |
| 19 | * |
| 20 | * Note that this may include private part of the key as well as the public |
| 21 | * part. |
| 22 | */ |
| 23 | struct public_key { |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 24 | void *key; |
| 25 | u32 keylen; |
David Howells | 4e8ae72 | 2016-03-03 21:49:27 +0000 | [diff] [blame] | 26 | const char *id_type; |
| 27 | const char *pkey_algo; |
David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 28 | }; |
| 29 | |
David Howells | 3b76456 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 30 | extern void public_key_free(struct public_key *key); |
David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 31 | |
| 32 | /* |
| 33 | * Public key cryptography signature data |
| 34 | */ |
| 35 | struct public_key_signature { |
David Howells | a022ec0 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 36 | struct asymmetric_key_id *auth_ids[2]; |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 37 | u8 *s; /* Signature */ |
| 38 | u32 s_size; /* Number of bytes in signature */ |
David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 39 | u8 *digest; |
Tadeusz Struk | d846e78 | 2016-02-02 10:09:03 -0800 | [diff] [blame] | 40 | u8 digest_size; /* Number of bytes in digest */ |
David Howells | 4e8ae72 | 2016-03-03 21:49:27 +0000 | [diff] [blame] | 41 | const char *pkey_algo; |
| 42 | const char *hash_algo; |
David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 43 | }; |
| 44 | |
David Howells | 3b76456 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 45 | extern void public_key_signature_free(struct public_key_signature *sig); |
| 46 | |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 47 | extern struct asymmetric_key_subtype public_key_subtype; |
David Howells | 3b76456 | 2016-04-06 16:13:33 +0100 | [diff] [blame] | 48 | |
David Howells | 4ae71c1 | 2012-09-21 23:25:04 +0100 | [diff] [blame] | 49 | struct key; |
David Howells | a511e1a | 2016-04-06 16:14:26 +0100 | [diff] [blame] | 50 | struct key_type; |
| 51 | union key_payload; |
| 52 | |
| 53 | extern int restrict_link_by_signature(struct key *trust_keyring, |
| 54 | const struct key_type *type, |
| 55 | const union key_payload *payload); |
| 56 | |
David Howells | 4ae71c1 | 2012-09-21 23:25:04 +0100 | [diff] [blame] | 57 | extern int verify_signature(const struct key *key, |
| 58 | const struct public_key_signature *sig); |
| 59 | |
Tadeusz Struk | db6c43b | 2016-02-02 10:08:53 -0800 | [diff] [blame] | 60 | int public_key_verify_signature(const struct public_key *pkey, |
| 61 | const struct public_key_signature *sig); |
| 62 | |
David Howells | a9681bf | 2012-09-21 23:24:55 +0100 | [diff] [blame] | 63 | #endif /* _LINUX_PUBLIC_KEY_H */ |