| 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 | |
| 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 { |
| 24 | void *key; |
| 25 | u32 keylen; |
| 26 | const char *id_type; |
| 27 | const char *pkey_algo; |
| 28 | }; |
| 29 | |
| 30 | extern void public_key_free(struct public_key *key); |
| 31 | |
| 32 | /* |
| 33 | * Public key cryptography signature data |
| 34 | */ |
| 35 | struct public_key_signature { |
| 36 | struct asymmetric_key_id *auth_ids[2]; |
| 37 | u8 *s; /* Signature */ |
| 38 | u32 s_size; /* Number of bytes in signature */ |
| 39 | u8 *digest; |
| 40 | u8 digest_size; /* Number of bytes in digest */ |
| 41 | const char *pkey_algo; |
| 42 | const char *hash_algo; |
| 43 | }; |
| 44 | |
| 45 | extern void public_key_signature_free(struct public_key_signature *sig); |
| 46 | |
| 47 | extern struct asymmetric_key_subtype public_key_subtype; |
| 48 | |
| 49 | struct key; |
| 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 | |
| 57 | extern int verify_signature(const struct key *key, |
| 58 | const struct public_key_signature *sig); |
| 59 | |
| 60 | int public_key_verify_signature(const struct public_key *pkey, |
| 61 | const struct public_key_signature *sig); |
| 62 | |
| 63 | #endif /* _LINUX_PUBLIC_KEY_H */ |