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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Asymmetric public-key algorithm definitions
*
* See Documentation/crypto/asymmetric-keys.rst
*
* 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;
unsigned long key_eflags; /* key extension flags */
#define KEY_EFLAG_CA 0 /* set if the CA basic constraints is set */
#define KEY_EFLAG_DIGITALSIG 1 /* set if the digitalSignature usage is set */
#define KEY_EFLAG_KEYCERTSIGN 2 /* set if the keyCertSign usage is set */
};
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 */
u32 s_size; /* Number of bytes in signature */
u8 *digest;
u8 digest_size; /* Number of bytes in digest */
const char *pkey_algo;
const char *hash_algo;
const char *encoding;
const void *data;
unsigned int data_size;
};
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);
#if IS_REACHABLE(CONFIG_ASYMMETRIC_KEY_TYPE)
extern int restrict_link_by_ca(struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *trust_keyring);
int restrict_link_by_digsig(struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *trust_keyring);
#else
static inline int restrict_link_by_ca(struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *trust_keyring)
{
return 0;
}
static inline int restrict_link_by_digsig(struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *trust_keyring)
{
return 0;
}
#endif
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 *);
#if IS_REACHABLE(CONFIG_ASYMMETRIC_PUBLIC_KEY_SUBTYPE)
int public_key_verify_signature(const struct public_key *pkey,
const struct public_key_signature *sig);
#else
static inline
int public_key_verify_signature(const struct public_key *pkey,
const struct public_key_signature *sig)
{
return -EINVAL;
}
#endif
#endif /* _LINUX_PUBLIC_KEY_H */
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| internal | Folder | 0755 |
|
|
| acompress.h | File | 8.9 KB | 0644 |
|
| aead.h | File | 18.44 KB | 0644 |
|
| aes.h | File | 2.5 KB | 0644 |
|
| akcipher.h | File | 12.92 KB | 0644 |
|
| algapi.h | File | 7.22 KB | 0644 |
|
| arc4.h | File | 484 B | 0644 |
|
| asym_tpm_subtype.h | File | 521 B | 0644 |
|
| authenc.h | File | 635 B | 0644 |
|
| b128ops.h | File | 2.26 KB | 0644 |
|
| blake2b.h | File | 1.57 KB | 0644 |
|
| blake2s.h | File | 2.72 KB | 0644 |
|
| blowfish.h | File | 415 B | 0644 |
|
| cast5.h | File | 590 B | 0644 |
|
| cast6.h | File | 607 B | 0644 |
|
| cast_common.h | File | 232 B | 0644 |
|
| chacha.h | File | 3.32 KB | 0644 |
|
| chacha20poly1305.h | File | 1.66 KB | 0644 |
|
| cryptd.h | File | 2 KB | 0644 |
|
| ctr.h | File | 1.42 KB | 0644 |
|
| curve25519.h | File | 2.02 KB | 0644 |
|
| des.h | File | 1.68 KB | 0644 |
|
| dh.h | File | 3.03 KB | 0644 |
|
| drbg.h | File | 8.99 KB | 0644 |
|
| ecc_curve.h | File | 1.31 KB | 0644 |
|
| ecdh.h | File | 2.43 KB | 0644 |
|
| engine.h | File | 3.78 KB | 0644 |
|
| gcm.h | File | 867 B | 0644 |
|
| gf128mul.h | File | 9.42 KB | 0644 |
|
| ghash.h | File | 388 B | 0644 |
|
| hash.h | File | 34.11 KB | 0644 |
|
| hash_info.h | File | 998 B | 0644 |
|
| hkdf.h | File | 524 B | 0644 |
|
| hmac.h | File | 173 B | 0644 |
|
| if_alg.h | File | 6.6 KB | 0644 |
|
| kpp.h | File | 9.97 KB | 0644 |
|
| md5.h | File | 497 B | 0644 |
|
| nhpoly1305.h | File | 2.18 KB | 0644 |
|
| null.h | File | 346 B | 0644 |
|
| padlock.h | File | 438 B | 0644 |
|
| pcrypt.h | File | 821 B | 0644 |
|
| pkcs7.h | File | 1.15 KB | 0644 |
|
| poly1305.h | File | 2.44 KB | 0644 |
|
| public_key.h | File | 3.63 KB | 0644 |
|
| rng.h | File | 6.59 KB | 0644 |
|
| scatterwalk.h | File | 2.94 KB | 0644 |
|
| serpent.h | File | 696 B | 0644 |
|
| sha1.h | File | 1.18 KB | 0644 |
|
| sha1_base.h | File | 2.45 KB | 0644 |
|
| sha2.h | File | 3.76 KB | 0644 |
|
| sha256_base.h | File | 2.56 KB | 0644 |
|
| sha3.h | File | 879 B | 0644 |
|
| sha512_base.h | File | 3.18 KB | 0644 |
|
| skcipher.h | File | 20.03 KB | 0644 |
|
| sm2.h | File | 749 B | 0644 |
|
| sm3.h | File | 897 B | 0644 |
|
| sm3_base.h | File | 2.55 KB | 0644 |
|
| sm4.h | File | 754 B | 0644 |
|
| streebog.h | File | 949 B | 0644 |
|
| twofish.h | File | 743 B | 0644 |
|
| xts.h | File | 978 B | 0644 |
|