mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-12-05 05:03:44 +01:00
980230e965
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
476 lines
15 KiB
C
476 lines
15 KiB
C
/**
|
|
* \file psa/crypto_struct.h
|
|
*
|
|
* \brief PSA cryptography module: Mbed TLS structured type implementations
|
|
*
|
|
* \note This file may not be included directly. Applications must
|
|
* include psa/crypto.h.
|
|
*
|
|
* This file contains the definitions of some data structures with
|
|
* implementation-specific definitions.
|
|
*
|
|
* In implementations with isolation between the application and the
|
|
* cryptography module, it is expected that the front-end and the back-end
|
|
* would have different versions of this file.
|
|
*
|
|
* <h3>Design notes about multipart operation structures</h3>
|
|
*
|
|
* For multipart operations without driver delegation support, each multipart
|
|
* operation structure contains a `psa_algorithm_t alg` field which indicates
|
|
* which specific algorithm the structure is for. When the structure is not in
|
|
* use, `alg` is 0. Most of the structure consists of a union which is
|
|
* discriminated by `alg`.
|
|
*
|
|
* For multipart operations with driver delegation support, each multipart
|
|
* operation structure contains an `unsigned int id` field indicating which
|
|
* driver got assigned to do the operation. When the structure is not in use,
|
|
* 'id' is 0. The structure contains also a driver context which is the union
|
|
* of the contexts of all drivers able to handle the type of multipart
|
|
* operation.
|
|
*
|
|
* Note that when `alg` or `id` is 0, the content of other fields is undefined.
|
|
* In particular, it is not guaranteed that a freshly-initialized structure
|
|
* is all-zero: we initialize structures to something like `{0, 0}`, which
|
|
* is only guaranteed to initializes the first member of the union;
|
|
* GCC and Clang initialize the whole structure to 0 (at the time of writing),
|
|
* but MSVC and CompCert don't.
|
|
*
|
|
* In Mbed Crypto, multipart operation structures live independently from
|
|
* the key. This allows Mbed Crypto to free the key objects when destroying
|
|
* a key slot. If a multipart operation needs to remember the key after
|
|
* the setup function returns, the operation structure needs to contain a
|
|
* copy of the key.
|
|
*/
|
|
/*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef PSA_CRYPTO_STRUCT_H
|
|
#define PSA_CRYPTO_STRUCT_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Include the Mbed TLS configuration file, the way Mbed TLS does it
|
|
* in each of its header files. */
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#include "mbedtls/cmac.h"
|
|
#include "mbedtls/gcm.h"
|
|
|
|
/* Include the context definition for the compiled-in drivers */
|
|
#include "psa/crypto_driver_contexts.h"
|
|
|
|
struct psa_hash_operation_s
|
|
{
|
|
/** Unique ID indicating which driver got assigned to do the
|
|
* operation. Since driver contexts are driver-specific, swapping
|
|
* drivers halfway through the operation is not supported.
|
|
* ID values are auto-generated in psa_driver_wrappers.h.
|
|
* ID value zero means the context is not valid or not assigned to
|
|
* any driver (i.e. the driver context is not active, in use). */
|
|
unsigned int id;
|
|
psa_driver_hash_context_t ctx;
|
|
};
|
|
|
|
#define PSA_HASH_OPERATION_INIT {0, {0}}
|
|
static inline struct psa_hash_operation_s psa_hash_operation_init( void )
|
|
{
|
|
const struct psa_hash_operation_s v = PSA_HASH_OPERATION_INIT;
|
|
return( v );
|
|
}
|
|
|
|
#if defined(MBEDTLS_MD_C)
|
|
typedef struct
|
|
{
|
|
/** The HMAC algorithm in use */
|
|
psa_algorithm_t alg;
|
|
/** The hash context. */
|
|
struct psa_hash_operation_s hash_ctx;
|
|
/** The HMAC part of the context. */
|
|
uint8_t opad[PSA_HMAC_MAX_HASH_BLOCK_SIZE];
|
|
} psa_hmac_internal_data;
|
|
#endif /* MBEDTLS_MD_C */
|
|
|
|
struct psa_mac_operation_s
|
|
{
|
|
psa_algorithm_t alg;
|
|
unsigned int key_set : 1;
|
|
unsigned int iv_required : 1;
|
|
unsigned int iv_set : 1;
|
|
unsigned int has_input : 1;
|
|
unsigned int is_sign : 1;
|
|
uint8_t mac_size;
|
|
union
|
|
{
|
|
unsigned dummy; /* Make the union non-empty even with no supported algorithms. */
|
|
#if defined(MBEDTLS_MD_C)
|
|
psa_hmac_internal_data hmac;
|
|
#endif
|
|
#if defined(MBEDTLS_CMAC_C)
|
|
mbedtls_cipher_context_t cmac;
|
|
#endif
|
|
} ctx;
|
|
};
|
|
|
|
#define PSA_MAC_OPERATION_INIT {0, 0, 0, 0, 0, 0, 0, {0}}
|
|
static inline struct psa_mac_operation_s psa_mac_operation_init( void )
|
|
{
|
|
const struct psa_mac_operation_s v = PSA_MAC_OPERATION_INIT;
|
|
return( v );
|
|
}
|
|
|
|
struct psa_cipher_operation_s
|
|
{
|
|
/** Unique ID indicating which driver got assigned to do the
|
|
* operation. Since driver contexts are driver-specific, swapping
|
|
* drivers halfway through the operation is not supported.
|
|
* ID values are auto-generated in psa_crypto_driver_wrappers.h
|
|
* ID value zero means the context is not valid or not assigned to
|
|
* any driver (i.e. none of the driver contexts are active). */
|
|
unsigned int id;
|
|
|
|
unsigned int iv_required : 1;
|
|
unsigned int iv_set : 1;
|
|
|
|
uint8_t default_iv_length;
|
|
|
|
psa_driver_cipher_context_t ctx;
|
|
};
|
|
|
|
#define PSA_CIPHER_OPERATION_INIT {0, 0, 0, 0, {0}}
|
|
static inline struct psa_cipher_operation_s psa_cipher_operation_init( void )
|
|
{
|
|
const struct psa_cipher_operation_s v = PSA_CIPHER_OPERATION_INIT;
|
|
return( v );
|
|
}
|
|
|
|
struct psa_aead_operation_s
|
|
{
|
|
psa_algorithm_t alg;
|
|
unsigned int key_set : 1;
|
|
unsigned int iv_set : 1;
|
|
uint8_t iv_size;
|
|
uint8_t block_size;
|
|
union
|
|
{
|
|
unsigned dummy; /* Enable easier initializing of the union. */
|
|
mbedtls_cipher_context_t cipher;
|
|
} ctx;
|
|
};
|
|
|
|
#define PSA_AEAD_OPERATION_INIT {0, 0, 0, 0, 0, {0}}
|
|
static inline struct psa_aead_operation_s psa_aead_operation_init( void )
|
|
{
|
|
const struct psa_aead_operation_s v = PSA_AEAD_OPERATION_INIT;
|
|
return( v );
|
|
}
|
|
|
|
#if defined(MBEDTLS_MD_C)
|
|
typedef struct
|
|
{
|
|
uint8_t *info;
|
|
size_t info_length;
|
|
psa_hmac_internal_data hmac;
|
|
uint8_t prk[PSA_HASH_MAX_SIZE];
|
|
uint8_t output_block[PSA_HASH_MAX_SIZE];
|
|
#if PSA_HASH_MAX_SIZE > 0xff
|
|
#error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
|
|
#endif
|
|
uint8_t offset_in_block;
|
|
uint8_t block_number;
|
|
unsigned int state : 2;
|
|
unsigned int info_set : 1;
|
|
} psa_hkdf_key_derivation_t;
|
|
#endif /* MBEDTLS_MD_C */
|
|
|
|
#if defined(MBEDTLS_MD_C)
|
|
typedef enum
|
|
{
|
|
PSA_TLS12_PRF_STATE_INIT, /* no input provided */
|
|
PSA_TLS12_PRF_STATE_SEED_SET, /* seed has been set */
|
|
PSA_TLS12_PRF_STATE_KEY_SET, /* key has been set */
|
|
PSA_TLS12_PRF_STATE_LABEL_SET, /* label has been set */
|
|
PSA_TLS12_PRF_STATE_OUTPUT /* output has been started */
|
|
} psa_tls12_prf_key_derivation_state_t;
|
|
|
|
typedef struct psa_tls12_prf_key_derivation_s
|
|
{
|
|
#if PSA_HASH_MAX_SIZE > 0xff
|
|
#error "PSA_HASH_MAX_SIZE does not fit in uint8_t"
|
|
#endif
|
|
|
|
/* Indicates how many bytes in the current HMAC block have
|
|
* not yet been read by the user. */
|
|
uint8_t left_in_block;
|
|
|
|
/* The 1-based number of the block. */
|
|
uint8_t block_number;
|
|
|
|
psa_tls12_prf_key_derivation_state_t state;
|
|
|
|
uint8_t *seed;
|
|
size_t seed_length;
|
|
uint8_t *label;
|
|
size_t label_length;
|
|
psa_hmac_internal_data hmac;
|
|
uint8_t Ai[PSA_HASH_MAX_SIZE];
|
|
|
|
/* `HMAC_hash( prk, A(i) + seed )` in the notation of RFC 5246, Sect. 5. */
|
|
uint8_t output_block[PSA_HASH_MAX_SIZE];
|
|
} psa_tls12_prf_key_derivation_t;
|
|
#endif /* MBEDTLS_MD_C */
|
|
|
|
struct psa_key_derivation_s
|
|
{
|
|
psa_algorithm_t alg;
|
|
unsigned int can_output_key : 1;
|
|
size_t capacity;
|
|
union
|
|
{
|
|
/* Make the union non-empty even with no supported algorithms. */
|
|
uint8_t dummy;
|
|
#if defined(MBEDTLS_MD_C)
|
|
psa_hkdf_key_derivation_t hkdf;
|
|
psa_tls12_prf_key_derivation_t tls12_prf;
|
|
#endif
|
|
} ctx;
|
|
};
|
|
|
|
/* This only zeroes out the first byte in the union, the rest is unspecified. */
|
|
#define PSA_KEY_DERIVATION_OPERATION_INIT {0, 0, 0, {0}}
|
|
static inline struct psa_key_derivation_s psa_key_derivation_operation_init( void )
|
|
{
|
|
const struct psa_key_derivation_s v = PSA_KEY_DERIVATION_OPERATION_INIT;
|
|
return( v );
|
|
}
|
|
|
|
struct psa_key_policy_s
|
|
{
|
|
psa_key_usage_t usage;
|
|
psa_algorithm_t alg;
|
|
psa_algorithm_t alg2;
|
|
};
|
|
typedef struct psa_key_policy_s psa_key_policy_t;
|
|
|
|
#define PSA_KEY_POLICY_INIT {0, 0, 0}
|
|
static inline struct psa_key_policy_s psa_key_policy_init( void )
|
|
{
|
|
const struct psa_key_policy_s v = PSA_KEY_POLICY_INIT;
|
|
return( v );
|
|
}
|
|
|
|
/* The type used internally for key sizes.
|
|
* Public interfaces use size_t, but internally we use a smaller type. */
|
|
typedef uint16_t psa_key_bits_t;
|
|
/* The maximum value of the type used to represent bit-sizes.
|
|
* This is used to mark an invalid key size. */
|
|
#define PSA_KEY_BITS_TOO_LARGE ( (psa_key_bits_t) ( -1 ) )
|
|
/* The maximum size of a key in bits.
|
|
* Currently defined as the maximum that can be represented, rounded down
|
|
* to a whole number of bytes.
|
|
* This is an uncast value so that it can be used in preprocessor
|
|
* conditionals. */
|
|
#define PSA_MAX_KEY_BITS 0xfff8
|
|
|
|
/** A mask of flags that can be stored in key attributes.
|
|
*
|
|
* This type is also used internally to store flags in slots. Internal
|
|
* flags are defined in library/psa_crypto_core.h. Internal flags may have
|
|
* the same value as external flags if they are properly handled during
|
|
* key creation and in psa_get_key_attributes.
|
|
*/
|
|
typedef uint16_t psa_key_attributes_flag_t;
|
|
|
|
#define MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER \
|
|
( (psa_key_attributes_flag_t) 0x0001 )
|
|
|
|
/* A mask of key attribute flags used externally only.
|
|
* Only meant for internal checks inside the library. */
|
|
#define MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY ( \
|
|
MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER | \
|
|
0 )
|
|
|
|
/* A mask of key attribute flags used both internally and externally.
|
|
* Currently there aren't any. */
|
|
#define MBEDTLS_PSA_KA_MASK_DUAL_USE ( \
|
|
0 )
|
|
|
|
typedef struct
|
|
{
|
|
psa_key_type_t type;
|
|
psa_key_bits_t bits;
|
|
psa_key_lifetime_t lifetime;
|
|
mbedtls_svc_key_id_t id;
|
|
psa_key_policy_t policy;
|
|
psa_key_attributes_flag_t flags;
|
|
} psa_core_key_attributes_t;
|
|
|
|
#define PSA_CORE_KEY_ATTRIBUTES_INIT {PSA_KEY_TYPE_NONE, 0, PSA_KEY_LIFETIME_VOLATILE, MBEDTLS_SVC_KEY_ID_INIT, PSA_KEY_POLICY_INIT, 0}
|
|
|
|
struct psa_key_attributes_s
|
|
{
|
|
psa_core_key_attributes_t core;
|
|
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
|
|
psa_key_slot_number_t slot_number;
|
|
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */
|
|
void *domain_parameters;
|
|
size_t domain_parameters_size;
|
|
};
|
|
|
|
#if defined(MBEDTLS_PSA_CRYPTO_SE_C)
|
|
#define PSA_KEY_ATTRIBUTES_INIT {PSA_CORE_KEY_ATTRIBUTES_INIT, 0, NULL, 0}
|
|
#else
|
|
#define PSA_KEY_ATTRIBUTES_INIT {PSA_CORE_KEY_ATTRIBUTES_INIT, NULL, 0}
|
|
#endif
|
|
|
|
static inline struct psa_key_attributes_s psa_key_attributes_init( void )
|
|
{
|
|
const struct psa_key_attributes_s v = PSA_KEY_ATTRIBUTES_INIT;
|
|
return( v );
|
|
}
|
|
|
|
static inline void psa_set_key_id( psa_key_attributes_t *attributes,
|
|
mbedtls_svc_key_id_t key )
|
|
{
|
|
psa_key_lifetime_t lifetime = attributes->core.lifetime;
|
|
|
|
attributes->core.id = key;
|
|
|
|
if( PSA_KEY_LIFETIME_IS_VOLATILE( lifetime ) )
|
|
{
|
|
attributes->core.lifetime =
|
|
PSA_KEY_LIFETIME_FROM_PERSISTENCE_AND_LOCATION(
|
|
PSA_KEY_LIFETIME_PERSISTENT,
|
|
PSA_KEY_LIFETIME_GET_LOCATION( lifetime ) );
|
|
}
|
|
}
|
|
|
|
static inline mbedtls_svc_key_id_t psa_get_key_id(
|
|
const psa_key_attributes_t *attributes)
|
|
{
|
|
return( attributes->core.id );
|
|
}
|
|
|
|
#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
|
|
static inline void mbedtls_set_key_owner_id( psa_key_attributes_t *attributes,
|
|
mbedtls_key_owner_id_t owner )
|
|
{
|
|
attributes->core.id.owner = owner;
|
|
}
|
|
#endif
|
|
|
|
static inline void psa_set_key_lifetime(psa_key_attributes_t *attributes,
|
|
psa_key_lifetime_t lifetime)
|
|
{
|
|
attributes->core.lifetime = lifetime;
|
|
if( PSA_KEY_LIFETIME_IS_VOLATILE( lifetime ) )
|
|
{
|
|
#ifdef MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER
|
|
attributes->core.id.key_id = 0;
|
|
#else
|
|
attributes->core.id = 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static inline psa_key_lifetime_t psa_get_key_lifetime(
|
|
const psa_key_attributes_t *attributes)
|
|
{
|
|
return( attributes->core.lifetime );
|
|
}
|
|
|
|
static inline void psa_set_key_usage_flags(psa_key_attributes_t *attributes,
|
|
psa_key_usage_t usage_flags)
|
|
{
|
|
attributes->core.policy.usage = usage_flags;
|
|
}
|
|
|
|
static inline psa_key_usage_t psa_get_key_usage_flags(
|
|
const psa_key_attributes_t *attributes)
|
|
{
|
|
return( attributes->core.policy.usage );
|
|
}
|
|
|
|
static inline void psa_set_key_algorithm(psa_key_attributes_t *attributes,
|
|
psa_algorithm_t alg)
|
|
{
|
|
attributes->core.policy.alg = alg;
|
|
}
|
|
|
|
static inline psa_algorithm_t psa_get_key_algorithm(
|
|
const psa_key_attributes_t *attributes)
|
|
{
|
|
return( attributes->core.policy.alg );
|
|
}
|
|
|
|
/* This function is declared in crypto_extra.h, which comes after this
|
|
* header file, but we need the function here, so repeat the declaration. */
|
|
psa_status_t psa_set_key_domain_parameters(psa_key_attributes_t *attributes,
|
|
psa_key_type_t type,
|
|
const uint8_t *data,
|
|
size_t data_length);
|
|
|
|
static inline void psa_set_key_type(psa_key_attributes_t *attributes,
|
|
psa_key_type_t type)
|
|
{
|
|
if( attributes->domain_parameters == NULL )
|
|
{
|
|
/* Common case: quick path */
|
|
attributes->core.type = type;
|
|
}
|
|
else
|
|
{
|
|
/* Call the bigger function to free the old domain paramteres.
|
|
* Ignore any errors which may arise due to type requiring
|
|
* non-default domain parameters, since this function can't
|
|
* report errors. */
|
|
(void) psa_set_key_domain_parameters( attributes, type, NULL, 0 );
|
|
}
|
|
}
|
|
|
|
static inline psa_key_type_t psa_get_key_type(
|
|
const psa_key_attributes_t *attributes)
|
|
{
|
|
return( attributes->core.type );
|
|
}
|
|
|
|
static inline void psa_set_key_bits(psa_key_attributes_t *attributes,
|
|
size_t bits)
|
|
{
|
|
if( bits > PSA_MAX_KEY_BITS )
|
|
attributes->core.bits = PSA_KEY_BITS_TOO_LARGE;
|
|
else
|
|
attributes->core.bits = (psa_key_bits_t) bits;
|
|
}
|
|
|
|
static inline size_t psa_get_key_bits(
|
|
const psa_key_attributes_t *attributes)
|
|
{
|
|
return( attributes->core.bits );
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* PSA_CRYPTO_STRUCT_H */
|