Resguardo inicial

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lastdragon
2026-09-06 12:53:21 -06:00
parent 662efe3c2a
commit ad2088d178
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Asymmetric public-key cryptography data parser
*
* See Documentation/crypto/asymmetric-keys.rst
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_ASYMMETRIC_PARSER_H
#define _KEYS_ASYMMETRIC_PARSER_H
struct key_preparsed_payload;
/*
* Key data parser. Called during key instantiation.
*/
struct asymmetric_key_parser {
struct list_head link;
struct module *owner;
const char *name;
/* Attempt to parse a key from the data blob passed to add_key() or
* keyctl_instantiate(). Should also generate a proposed description
* that the caller can optionally use for the key.
*
* Return EBADMSG if not recognised.
*/
int (*parse)(struct key_preparsed_payload *prep);
};
extern int register_asymmetric_key_parser(struct asymmetric_key_parser *);
extern void unregister_asymmetric_key_parser(struct asymmetric_key_parser *);
#endif /* _KEYS_ASYMMETRIC_PARSER_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Asymmetric public-key cryptography key subtype
*
* See Documentation/crypto/asymmetric-keys.rst
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_ASYMMETRIC_SUBTYPE_H
#define _KEYS_ASYMMETRIC_SUBTYPE_H
#include <linux/seq_file.h>
#include <keys/asymmetric-type.h>
struct kernel_pkey_query;
struct kernel_pkey_params;
struct public_key_signature;
/*
* Keys of this type declare a subtype that indicates the handlers and
* capabilities.
*/
struct asymmetric_key_subtype {
struct module *owner;
const char *name;
unsigned short name_len; /* length of name */
/* Describe a key of this subtype for /proc/keys */
void (*describe)(const struct key *key, struct seq_file *m);
/* Destroy a key of this subtype */
void (*destroy)(void *payload_crypto, void *payload_auth);
int (*query)(const struct kernel_pkey_params *params,
struct kernel_pkey_query *info);
/* Encrypt/decrypt/sign data */
int (*eds_op)(struct kernel_pkey_params *params,
const void *in, void *out);
/* Verify the signature on a key of this subtype (optional) */
int (*verify_signature)(const struct key *key,
const struct public_key_signature *sig);
};
/**
* asymmetric_key_subtype - Get the subtype from an asymmetric key
* @key: The key of interest.
*
* Retrieves and returns the subtype pointer of the asymmetric key from the
* type-specific data attached to the key.
*/
static inline
struct asymmetric_key_subtype *asymmetric_key_subtype(const struct key *key)
{
return key->payload.data[asym_subtype];
}
#endif /* _KEYS_ASYMMETRIC_SUBTYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Asymmetric Public-key cryptography key type interface
*
* See Documentation/crypto/asymmetric-keys.rst
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_ASYMMETRIC_TYPE_H
#define _KEYS_ASYMMETRIC_TYPE_H
#include <linux/key-type.h>
#include <linux/verification.h>
extern struct key_type key_type_asymmetric;
/*
* The key payload is four words. The asymmetric-type key uses them as
* follows:
*/
enum asymmetric_payload_bits {
asym_crypto, /* The data representing the key */
asym_subtype, /* Pointer to an asymmetric_key_subtype struct */
asym_key_ids, /* Pointer to an asymmetric_key_ids struct */
asym_auth /* The key's authorisation (signature, parent key ID) */
};
/*
* Identifiers for an asymmetric key ID. We have three ways of looking up a
* key derived from an X.509 certificate:
*
* (1) Serial Number & Issuer. Non-optional. This is the only valid way to
* map a PKCS#7 signature to an X.509 certificate.
*
* (2) Issuer & Subject Unique IDs. Optional. These were the original way to
* match X.509 certificates, but have fallen into disuse in favour of (3).
*
* (3) Auth & Subject Key Identifiers. Optional. SKIDs are only provided on
* CA keys that are intended to sign other keys, so don't appear in end
* user certificates unless forced.
*
* We could also support an PGP key identifier, which is just a SHA1 sum of the
* public key and certain parameters, but since we don't support PGP keys at
* the moment, we shall ignore those.
*
* What we actually do is provide a place where binary identifiers can be
* stashed and then compare against them when checking for an id match.
*/
struct asymmetric_key_id {
unsigned short len;
unsigned char data[] __counted_by(len);
};
struct asymmetric_key_ids {
void *id[3];
};
extern bool asymmetric_key_id_same(const struct asymmetric_key_id *kid1,
const struct asymmetric_key_id *kid2);
extern bool asymmetric_key_id_partial(const struct asymmetric_key_id *kid1,
const struct asymmetric_key_id *kid2);
extern struct asymmetric_key_id *asymmetric_key_generate_id(const void *val_1,
size_t len_1,
const void *val_2,
size_t len_2);
static inline
const struct asymmetric_key_ids *asymmetric_key_ids(const struct key *key)
{
return key->payload.data[asym_key_ids];
}
static inline
const struct public_key *asymmetric_key_public_key(const struct key *key)
{
return key->payload.data[asym_crypto];
}
extern struct key *find_asymmetric_key(struct key *keyring,
const struct asymmetric_key_id *id_0,
const struct asymmetric_key_id *id_1,
const struct asymmetric_key_id *id_2,
bool partial);
int x509_load_certificate_list(const u8 cert_list[], const unsigned long list_size,
const struct key *keyring);
/*
* The payload is at the discretion of the subtype.
*/
#endif /* _KEYS_ASYMMETRIC_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Big capacity key type.
*
* Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_BIG_KEY_TYPE_H
#define _KEYS_BIG_KEY_TYPE_H
#include <linux/key-type.h>
extern struct key_type key_type_big_key;
extern int big_key_preparse(struct key_preparsed_payload *prep);
extern void big_key_free_preparse(struct key_preparsed_payload *prep);
extern void big_key_revoke(struct key *key);
extern void big_key_destroy(struct key *key);
extern void big_key_describe(const struct key *big_key, struct seq_file *m);
extern long big_key_read(const struct key *key, char *buffer, size_t buflen);
extern int big_key_update(struct key *key, struct key_preparsed_payload *prep);
#endif /* _KEYS_BIG_KEY_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _KEYS_CEPH_TYPE_H
#define _KEYS_CEPH_TYPE_H
#include <linux/key.h>
extern struct key_type key_type_ceph;
#endif
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* DNS resolver key type
*
* Copyright (C) 2010 Wang Lei. All Rights Reserved.
* Written by Wang Lei (wang840925@gmail.com)
*/
#ifndef _KEYS_DNS_RESOLVER_TYPE_H
#define _KEYS_DNS_RESOLVER_TYPE_H
#include <linux/key-type.h>
extern struct key_type key_type_dns_resolver;
#endif /* _KEYS_DNS_RESOLVER_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2010 IBM Corporation
* Copyright (C) 2010 Politecnico di Torino, Italy
* TORSEC group -- https://security.polito.it
*
* Authors:
* Mimi Zohar <zohar@us.ibm.com>
* Roberto Sassu <roberto.sassu@polito.it>
*/
#ifndef _KEYS_ENCRYPTED_TYPE_H
#define _KEYS_ENCRYPTED_TYPE_H
#include <linux/key.h>
#include <linux/rcupdate.h>
struct encrypted_key_payload {
struct rcu_head rcu;
char *format; /* datablob: format */
char *master_desc; /* datablob: master key name */
char *datalen; /* datablob: decrypted key length */
u8 *iv; /* datablob: iv */
u8 *encrypted_data; /* datablob: encrypted data */
unsigned short datablob_len; /* length of datablob */
unsigned short decrypted_datalen; /* decrypted data length */
unsigned short payload_datalen; /* payload data length */
unsigned short encrypted_key_format; /* encrypted key format */
u8 *decrypted_data; /* decrypted data */
u8 payload_data[]; /* payload data + datablob + hmac */
};
extern struct key_type key_type_encrypted;
#endif /* _KEYS_ENCRYPTED_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Keyring key type
*
* Copyright (C) 2008, 2013 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_KEYRING_TYPE_H
#define _KEYS_KEYRING_TYPE_H
#include <linux/key.h>
#include <linux/assoc_array.h>
#endif /* _KEYS_KEYRING_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* request_key authorisation token key type
*
* Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_REQUEST_KEY_AUTH_TYPE_H
#define _KEYS_REQUEST_KEY_AUTH_TYPE_H
#include <linux/key.h>
#include <linux/refcount.h>
/*
* Authorisation record for request_key().
*/
struct request_key_auth {
struct rcu_head rcu;
refcount_t usage;
struct key *target_key;
struct key *dest_keyring;
const struct cred *cred;
void *callout_info;
size_t callout_len;
pid_t pid;
char op[8];
} __randomize_layout;
static inline struct request_key_auth *get_request_key_auth(const struct key *key)
{
return key->payload.data[0];
}
#endif /* _KEYS_REQUEST_KEY_AUTH_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* RxRPC key type
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_RXRPC_TYPE_H
#define _KEYS_RXRPC_TYPE_H
#include <linux/key.h>
#include <crypto/krb5.h>
/*
* key type for AF_RXRPC keys
*/
extern struct key_type key_type_rxrpc;
extern struct key *rxrpc_get_null_key(const char *);
/*
* RxRPC key for Kerberos IV (type-2 security)
*/
struct rxkad_key {
u32 vice_id;
u32 start; /* time at which ticket starts */
u32 expiry; /* time at which ticket expires */
u32 kvno; /* key version number */
u8 primary_flag; /* T if key for primary cell for this user */
u16 ticket_len; /* length of ticket[] */
u8 session_key[8]; /* DES session key */
u8 ticket[]; /* the encrypted ticket */
};
/*
* RxRPC key for YFS-RxGK (type-6 security)
*/
struct rxgk_key {
s64 begintime; /* Time at which the ticket starts */
s64 endtime; /* Time at which the ticket ends */
u64 lifetime; /* Maximum lifespan of a connection (seconds) */
u64 bytelife; /* Maximum number of bytes on a connection */
unsigned int enctype; /* Encoding type */
s8 level; /* Negotiated security RXRPC_SECURITY_PLAIN/AUTH/ENCRYPT */
struct krb5_buffer key; /* Master key, K0 */
struct krb5_buffer ticket; /* Ticket to be passed to server */
u8 _key[]; /* Key storage */
};
/*
* list of tokens attached to an rxrpc key
*/
struct rxrpc_key_token {
u16 security_index; /* RxRPC header security index */
bool no_leak_key; /* Don't copy the key to userspace */
struct rxrpc_key_token *next; /* the next token in the list */
union {
struct rxkad_key *kad;
struct rxgk_key *rxgk;
};
};
/*
* structure of raw payloads passed to add_key() or instantiate key
*/
struct rxrpc_key_data_v1 {
u16 security_index;
u16 ticket_length;
u32 expiry; /* time_t */
u32 kvno;
u8 session_key[8];
u8 ticket[];
};
/*
* AF_RXRPC key payload derived from XDR format
* - based on openafs-1.4.10/src/auth/afs_token.xg
*/
#define AFSTOKEN_LENGTH_MAX 16384 /* max payload size */
#define AFSTOKEN_STRING_MAX 256 /* max small string length */
#define AFSTOKEN_DATA_MAX 64 /* max small data length */
#define AFSTOKEN_CELL_MAX 64 /* max cellname length */
#define AFSTOKEN_MAX 8 /* max tokens per payload */
#define AFSTOKEN_BDATALN_MAX 16384 /* max big data length */
#define AFSTOKEN_RK_TIX_MAX 12000 /* max RxKAD ticket size */
#define AFSTOKEN_GK_KEY_MAX 64 /* max GSSAPI key size */
#define AFSTOKEN_GK_TOKEN_MAX 16384 /* max GSSAPI token size */
/*
* Truncate a time64_t to the range from 1970 to 2106 as in the network
* protocol.
*/
static inline u32 rxrpc_time64_to_u32(time64_t time)
{
if (time < 0)
return 0;
if (time > UINT_MAX)
return UINT_MAX;
return (u32)time;
}
/*
* Extend u32 back to time64_t using the same 1970-2106 range.
*/
static inline time64_t rxrpc_u32_to_time64(u32 time)
{
return (time64_t)time;
}
#endif /* _KEYS_RXRPC_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* System keyring containing trusted public keys.
*
* Copyright (C) 2013 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_SYSTEM_KEYRING_H
#define _KEYS_SYSTEM_KEYRING_H
#include <linux/key.h>
enum blacklist_hash_type {
/* TBSCertificate hash */
BLACKLIST_HASH_X509_TBS = 1,
/* Raw data hash */
BLACKLIST_HASH_BINARY = 2,
};
#ifdef CONFIG_SYSTEM_TRUSTED_KEYRING
extern int restrict_link_by_builtin_trusted(struct key *keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *restriction_key);
int restrict_link_by_digsig_builtin(struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *restriction_key);
extern __init int load_module_cert(struct key *keyring);
#else
#define restrict_link_by_builtin_trusted restrict_link_reject
#define restrict_link_by_digsig_builtin restrict_link_reject
static inline __init int load_module_cert(struct key *keyring)
{
return 0;
}
#endif
#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
extern int restrict_link_by_builtin_and_secondary_trusted(
struct key *keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *restriction_key);
int restrict_link_by_digsig_builtin_and_secondary(struct key *keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *restriction_key);
void __init add_to_secondary_keyring(const char *source, const void *data, size_t len);
#else
#define restrict_link_by_builtin_and_secondary_trusted restrict_link_by_builtin_trusted
#define restrict_link_by_digsig_builtin_and_secondary restrict_link_by_digsig_builtin
static inline void __init add_to_secondary_keyring(const char *source, const void *data, size_t len)
{
}
#endif
#ifdef CONFIG_INTEGRITY_MACHINE_KEYRING
extern int restrict_link_by_builtin_secondary_and_machine(
struct key *dest_keyring,
const struct key_type *type,
const union key_payload *payload,
struct key *restrict_key);
extern void __init set_machine_trusted_keys(struct key *keyring);
#else
#define restrict_link_by_builtin_secondary_and_machine restrict_link_by_builtin_trusted
static inline void __init set_machine_trusted_keys(struct key *keyring)
{
}
#endif
#ifdef CONFIG_SYSTEM_BLACKLIST_KEYRING
extern int mark_hash_blacklisted(const u8 *hash, size_t hash_len,
enum blacklist_hash_type hash_type);
extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
enum blacklist_hash_type hash_type);
extern int is_binary_blacklisted(const u8 *hash, size_t hash_len);
#else
static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
enum blacklist_hash_type hash_type)
{
return 0;
}
static inline int is_binary_blacklisted(const u8 *hash, size_t hash_len)
{
return 0;
}
#endif
struct pkcs7_message;
#ifdef CONFIG_SYSTEM_REVOCATION_LIST
extern int add_key_to_revocation_list(const char *data, size_t size);
extern int is_key_on_revocation_list(struct pkcs7_message *pkcs7);
#else
static inline int add_key_to_revocation_list(const char *data, size_t size)
{
return 0;
}
static inline int is_key_on_revocation_list(struct pkcs7_message *pkcs7)
{
return -ENOKEY;
}
#endif
#ifdef CONFIG_IMA_BLACKLIST_KEYRING
extern struct key *ima_blacklist_keyring;
static inline struct key *get_ima_blacklist_keyring(void)
{
return ima_blacklist_keyring;
}
#else
static inline struct key *get_ima_blacklist_keyring(void)
{
return NULL;
}
#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
extern void __init set_platform_trusted_keys(struct key *keyring);
#else
static inline void set_platform_trusted_keys(struct key *keyring)
{
}
#endif
#endif /* _KEYS_SYSTEM_KEYRING_H */
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2010 IBM Corporation
* Author: David Safford <safford@us.ibm.com>
*/
#ifndef _KEYS_TRUSTED_TYPE_H
#define _KEYS_TRUSTED_TYPE_H
#include <linux/key.h>
#include <linux/rcupdate.h>
#include <linux/tpm.h>
#ifdef pr_fmt
#undef pr_fmt
#endif
#define pr_fmt(fmt) "trusted_key: " fmt
#define MIN_KEY_SIZE 32
#define MAX_KEY_SIZE 128
#if IS_ENABLED(CONFIG_TRUSTED_KEYS_PKWM)
#define MAX_BLOB_SIZE 1152
#else
#define MAX_BLOB_SIZE 512
#endif
#define MAX_PCRINFO_SIZE 64
#define MAX_DIGEST_SIZE 64
struct trusted_key_payload {
struct rcu_head rcu;
unsigned int key_len;
unsigned int blob_len;
unsigned char migratable;
unsigned char old_format;
unsigned char key[MAX_KEY_SIZE + 1];
unsigned char blob[MAX_BLOB_SIZE];
};
struct trusted_key_options {
uint16_t keytype;
uint32_t keyhandle;
unsigned char keyauth[TPM_DIGEST_SIZE];
uint32_t blobauth_len;
unsigned char blobauth[TPM_DIGEST_SIZE];
uint32_t pcrinfo_len;
unsigned char pcrinfo[MAX_PCRINFO_SIZE];
int pcrlock;
uint32_t hash;
uint32_t policydigest_len;
unsigned char policydigest[MAX_DIGEST_SIZE];
uint32_t policyhandle;
void *private;
};
struct trusted_key_ops {
/*
* flag to indicate if trusted key implementation supports migration
* or not.
*/
unsigned char migratable;
/* Initialize key interface. */
int (*init)(void);
/* Seal a key. */
int (*seal)(struct trusted_key_payload *p, char *datablob);
/* Unseal a key. */
int (*unseal)(struct trusted_key_payload *p, char *datablob);
/* Optional: Get a randomized key. */
int (*get_random)(unsigned char *key, size_t key_len);
/* Exit key interface. */
void (*exit)(void);
};
struct trusted_key_source {
char *name;
struct trusted_key_ops *ops;
};
extern struct key_type key_type_trusted;
#ifdef CONFIG_TRUSTED_KEYS_DEBUG
extern bool trusted_debug;
static inline void dump_payload(struct trusted_key_payload *p)
{
if (!trusted_debug)
return;
pr_debug("key_len %d\n", p->key_len);
print_hex_dump_debug("key ", DUMP_PREFIX_NONE,
16, 1, p->key, p->key_len, 0);
pr_debug("bloblen %d\n", p->blob_len);
print_hex_dump_debug("blob ", DUMP_PREFIX_NONE,
16, 1, p->blob, p->blob_len, 0);
pr_debug("migratable %d\n", p->migratable);
}
#else
static inline void dump_payload(struct trusted_key_payload *p)
{
}
#endif
#endif /* _KEYS_TRUSTED_TYPE_H */
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2021 Pengutronix, Ahmad Fatoum <kernel@pengutronix.de>
*/
#ifndef __CAAM_TRUSTED_KEY_H
#define __CAAM_TRUSTED_KEY_H
extern struct trusted_key_ops trusted_key_caam_ops;
#endif
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2021 sigma star gmbh
*/
#ifndef TRUSTED_DCP_H
#define TRUSTED_DCP_H
extern struct trusted_key_ops dcp_trusted_key_ops;
#endif
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PKWM_TRUSTED_KEY_H
#define __PKWM_TRUSTED_KEY_H
#include <keys/trusted-type.h>
#include <linux/bitops.h>
#include <linux/printk.h>
extern struct trusted_key_ops pkwm_trusted_key_ops;
struct trusted_pkwm_options {
u16 wrap_flags;
};
static inline void dump_options(struct trusted_key_options *o)
{
const struct trusted_pkwm_options *pkwm;
bool sb_audit_or_enforce_bit;
bool sb_enforce_bit;
pkwm = o->private;
sb_audit_or_enforce_bit = pkwm->wrap_flags & BIT(0);
sb_enforce_bit = pkwm->wrap_flags & BIT(1);
if (sb_audit_or_enforce_bit)
pr_debug("secure boot mode required: audit or enforce");
else if (sb_enforce_bit)
pr_debug("secure boot mode required: enforce");
else
pr_debug("secure boot mode required: disabled");
}
#endif
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2019-2021 Linaro Ltd.
*
* Author:
* Sumit Garg <sumit.garg@linaro.org>
*/
#ifndef __TEE_TRUSTED_KEY_H
#define __TEE_TRUSTED_KEY_H
#include <keys/trusted-type.h>
extern struct trusted_key_ops trusted_key_tee_ops;
#endif
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __TRUSTED_TPM_H
#define __TRUSTED_TPM_H
#include <keys/trusted-type.h>
#include <linux/tpm_command.h>
extern struct trusted_key_ops trusted_key_tpm_ops;
int tpm2_seal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options);
int tpm2_unseal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options);
#endif
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* user-type.h: User-defined key type
*
* Copyright (C) 2005 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef _KEYS_USER_TYPE_H
#define _KEYS_USER_TYPE_H
#include <linux/key.h>
#include <linux/rcupdate.h>
#ifdef CONFIG_KEYS
/*****************************************************************************/
/*
* the payload for a key of type "user" or "logon"
* - once filled in and attached to a key:
* - the payload struct is invariant may not be changed, only replaced
* - the payload must be read with RCU procedures or with the key semaphore
* held
* - the payload may only be replaced with the key semaphore write-locked
* - the key's data length is the size of the actual data, not including the
* payload wrapper
*/
struct user_key_payload {
struct rcu_head rcu; /* RCU destructor */
unsigned short datalen; /* length of this data */
char data[] __aligned(__alignof__(u64)); /* actual data */
};
extern struct key_type key_type_user;
extern struct key_type key_type_logon;
struct key_preparsed_payload;
extern int user_preparse(struct key_preparsed_payload *prep);
extern void user_free_preparse(struct key_preparsed_payload *prep);
extern int user_update(struct key *key, struct key_preparsed_payload *prep);
extern void user_revoke(struct key *key);
extern void user_destroy(struct key *key);
extern void user_describe(const struct key *user, struct seq_file *m);
extern long user_read(const struct key *key, char *buffer, size_t buflen);
static inline const struct user_key_payload *user_key_payload_rcu(const struct key *key)
{
return (struct user_key_payload *)dereference_key_rcu(key);
}
static inline struct user_key_payload *user_key_payload_locked(const struct key *key)
{
return (struct user_key_payload *)dereference_key_locked((struct key *)key);
}
#endif /* CONFIG_KEYS */
#endif /* _KEYS_USER_TYPE_H */