| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* Asymmetric public-key algorithm definitions |
| * |
| * See Documentation/crypto/asymmetric-keys.txt |
| * |
| * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| */ |
| |
| #ifndef _LINUX_PUBLIC_KEY_H |
| #define _LINUX_PUBLIC_KEY_H |
| |
| #include <linux/keyctl.h> |
| #include <linux/oid_registry.h> |
| |
| /* |
| * Cryptographic data for the public-key subtype of the asymmetric key type. |
| * |
| * Note that this may include private part of the key as well as the public |
| * part. |
| */ |
| struct public_key { |
| void *key; |
| u32 keylen; |
| enum OID algo; |
| void *params; |
| u32 paramlen; |
| bool key_is_private; |
| const char *id_type; |
| const char *pkey_algo; |
| }; |
| |
| extern void public_key_free(struct public_key *key); |
| |
| /* |
| * Public key cryptography signature data |
| */ |
| struct public_key_signature { |
| struct asymmetric_key_id *auth_ids[2]; |
| u8 *s; /* Signature */ |
| u8 *digest; |
| u32 s_size; /* Number of bytes in signature */ |
| u32 digest_size; /* Number of bytes in digest */ |
| const char *pkey_algo; |
| const char *hash_algo; |
| const char *encoding; |
| }; |
| |
| extern void public_key_signature_free(struct public_key_signature *sig); |
| |
| extern struct asymmetric_key_subtype public_key_subtype; |
| |
| struct key; |
| struct key_type; |
| union key_payload; |
| |
| extern int restrict_link_by_signature(struct key *dest_keyring, |
| const struct key_type *type, |
| const union key_payload *payload, |
| struct key *trust_keyring); |
| |
| extern int restrict_link_by_key_or_keyring(struct key *dest_keyring, |
| const struct key_type *type, |
| const union key_payload *payload, |
| struct key *trusted); |
| |
| extern int restrict_link_by_key_or_keyring_chain(struct key *trust_keyring, |
| const struct key_type *type, |
| const union key_payload *payload, |
| struct key *trusted); |
| |
| extern int query_asymmetric_key(const struct kernel_pkey_params *, |
| struct kernel_pkey_query *); |
| |
| extern int encrypt_blob(struct kernel_pkey_params *, const void *, void *); |
| extern int decrypt_blob(struct kernel_pkey_params *, const void *, void *); |
| extern int create_signature(struct kernel_pkey_params *, const void *, void *); |
| extern int verify_signature(const struct key *, |
| const struct public_key_signature *); |
| |
| int public_key_verify_signature(const struct public_key *pkey, |
| const struct public_key_signature *sig); |
| |
| #endif /* _LINUX_PUBLIC_KEY_H */ |