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Merge pull request #3780 from stevew817/feature/validate_key_in_driver

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Add validate_key hooks and tests
This commit is contained in:
Gilles Peskine 2020-11-02 11:37:42 +01:00 committed by GitHub
commit a455e71588
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GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 471 additions and 232 deletions
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156
library/psa_crypto.c
View File

@ -739,7 +739,7 @@ static psa_status_t psa_load_ecp_representation( psa_key_type_t type,
* - The byte 0x04; * - The byte 0x04;
* - `x_P` as a `ceiling(m/8)`-byte string, big-endian; * - `x_P` as a `ceiling(m/8)`-byte string, big-endian;
* - `y_P` as a `ceiling(m/8)`-byte string, big-endian. * - `y_P` as a `ceiling(m/8)`-byte string, big-endian.
* So its data length is 2m+1 where n is the key size in bits. * So its data length is 2m+1 where m is the curve size in bits.
*/ */
if( ( data_length & 1 ) == 0 ) if( ( data_length & 1 ) == 0 )
return( PSA_ERROR_INVALID_ARGUMENT ); return( PSA_ERROR_INVALID_ARGUMENT );
@ -969,14 +969,45 @@ static psa_status_t psa_allocate_buffer_to_slot( psa_key_slot_t *slot,
return( PSA_SUCCESS ); return( PSA_SUCCESS );
} }
/** Import key data into a slot. `slot->attr.type` must have been set psa_status_t psa_copy_key_material_into_slot( psa_key_slot_t *slot,
* previously. This function assumes that the slot does not contain const uint8_t* data,
* any key material yet. On failure, the slot content is unchanged. */ size_t data_length )
psa_status_t psa_import_key_into_slot( psa_key_slot_t *slot, {
const uint8_t *data, psa_status_t status = psa_allocate_buffer_to_slot( slot,
size_t data_length ) data_length );
if( status != PSA_SUCCESS )
return( status );
memcpy( slot->data.key.data, data, data_length );
return( PSA_SUCCESS );
}
/** Import key data into a slot.
*
* `slot->type` must have been set previously.
* This function assumes that the slot does not contain any key material yet.
* On failure, the slot content is unchanged.
*
* Persistent storage is not affected.
*
* \param[in,out] slot The key slot to import data into.
* Its `type` field must have previously been set to
* the desired key type.
* It must not contain any key material yet.
* \param[in] data Buffer containing the key material to parse and import.
* \param data_length Size of \p data in bytes.
*
* \retval #PSA_SUCCESS
* \retval #PSA_ERROR_INVALID_ARGUMENT
* \retval #PSA_ERROR_NOT_SUPPORTED
* \retval #PSA_ERROR_INSUFFICIENT_MEMORY
*/
static psa_status_t psa_import_key_into_slot( psa_key_slot_t *slot,
const uint8_t *data,
size_t data_length )
{ {
psa_status_t status = PSA_SUCCESS; psa_status_t status = PSA_SUCCESS;
size_t bit_size;
/* zero-length keys are never supported. */ /* zero-length keys are never supported. */
if( data_length == 0 ) if( data_length == 0 )
@ -984,7 +1015,7 @@ psa_status_t psa_import_key_into_slot( psa_key_slot_t *slot,
if( key_type_is_raw_bytes( slot->attr.type ) ) if( key_type_is_raw_bytes( slot->attr.type ) )
{ {
size_t bit_size = PSA_BYTES_TO_BITS( data_length ); bit_size = PSA_BYTES_TO_BITS( data_length );
/* Ensure that the bytes-to-bits conversion hasn't overflown. */ /* Ensure that the bytes-to-bits conversion hasn't overflown. */
if( data_length > SIZE_MAX / 8 ) if( data_length > SIZE_MAX / 8 )
@ -1000,47 +1031,65 @@ psa_status_t psa_import_key_into_slot( psa_key_slot_t *slot,
return( status ); return( status );
/* Allocate memory for the key */ /* Allocate memory for the key */
status = psa_allocate_buffer_to_slot( slot, data_length ); status = psa_copy_key_material_into_slot( slot, data, data_length );
if( status != PSA_SUCCESS ) if( status != PSA_SUCCESS )
return( status ); return( status );
/* copy key into allocated buffer */
memcpy( slot->data.key.data, data, data_length );
/* Write the actual key size to the slot. /* Write the actual key size to the slot.
* psa_start_key_creation() wrote the size declared by the * psa_start_key_creation() wrote the size declared by the
* caller, which may be 0 (meaning unspecified) or wrong. */ * caller, which may be 0 (meaning unspecified) or wrong. */
slot->attr.bits = (psa_key_bits_t) bit_size; slot->attr.bits = (psa_key_bits_t) bit_size;
return( PSA_SUCCESS );
} }
else if( PSA_KEY_TYPE_IS_ECC( slot->attr.type ) ) else if( PSA_KEY_TYPE_IS_ASYMMETRIC( slot->attr.type ) )
{ {
/* Try validation through accelerators first. */
bit_size = slot->attr.bits;
psa_key_attributes_t attributes = {
.core = slot->attr
};
status = psa_driver_wrapper_validate_key( &attributes,
data,
data_length,
&bit_size );
if( status == PSA_SUCCESS )
{
/* Key has been validated successfully by an accelerator.
* Copy key material into slot. */
status = psa_copy_key_material_into_slot( slot, data, data_length );
if( status != PSA_SUCCESS )
return( status );
slot->attr.bits = (psa_key_bits_t) bit_size;
return( PSA_SUCCESS );
}
else if( status != PSA_ERROR_NOT_SUPPORTED )
return( status );
/* Key format is not supported by any accelerator, try software fallback
* if present. */
#if defined(MBEDTLS_ECP_C) #if defined(MBEDTLS_ECP_C)
status = psa_import_ecp_key( slot, if( PSA_KEY_TYPE_IS_ECC( slot->attr.type ) )
data, data_length ); {
#else return( psa_import_ecp_key( slot, data, data_length ) );
/* No drivers have been implemented yet, so without mbed TLS backing }
* there's no way to do ECP with the current library. */
return( PSA_ERROR_NOT_SUPPORTED );
#endif /* defined(MBEDTLS_ECP_C) */ #endif /* defined(MBEDTLS_ECP_C) */
}
else if( PSA_KEY_TYPE_IS_RSA( slot->attr.type ) )
{
#if defined(MBEDTLS_RSA_C) #if defined(MBEDTLS_RSA_C)
status = psa_import_rsa_key( slot, if( PSA_KEY_TYPE_IS_RSA( slot->attr.type ) )
data, data_length ); {
#else return( psa_import_rsa_key( slot, data, data_length ) );
/* No drivers have been implemented yet, so without mbed TLS backing }
* there's no way to do RSA with the current library. */
status = PSA_ERROR_NOT_SUPPORTED;
#endif /* defined(MBEDTLS_RSA_C) */ #endif /* defined(MBEDTLS_RSA_C) */
/* Fell through the fallback as well, so have nothing else to try. */
return( PSA_ERROR_NOT_SUPPORTED );
} }
else else
{ {
/* Unknown key type */ /* Unknown key type */
return( PSA_ERROR_NOT_SUPPORTED ); return( PSA_ERROR_NOT_SUPPORTED );
} }
return( status );
} }
/** Calculate the intersection of two algorithm usage policies. /** Calculate the intersection of two algorithm usage policies.
@ -1916,22 +1965,11 @@ static psa_status_t psa_finish_key_creation(
else else
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */ #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
{ {
size_t buffer_size = /* Key material is saved in export representation in the slot, so
PSA_KEY_EXPORT_MAX_SIZE( slot->attr.type, * just pass the slot buffer for storage. */
slot->attr.bits ); status = psa_save_persistent_key( &slot->attr,
uint8_t *buffer = mbedtls_calloc( 1, buffer_size ); slot->data.key.data,
size_t length = 0; slot->data.key.bytes );
if( buffer == NULL )
return( PSA_ERROR_INSUFFICIENT_MEMORY );
status = psa_internal_export_key( slot,
buffer, buffer_size, &length,
0 );
if( status == PSA_SUCCESS )
status = psa_save_persistent_key( &slot->attr,
buffer, length );
mbedtls_platform_zeroize( buffer, buffer_size );
mbedtls_free( buffer );
} }
} }
#endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */ #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */
@ -2179,26 +2217,16 @@ exit:
static psa_status_t psa_copy_key_material( const psa_key_slot_t *source, static psa_status_t psa_copy_key_material( const psa_key_slot_t *source,
psa_key_slot_t *target ) psa_key_slot_t *target )
{ {
psa_status_t status; psa_status_t status = psa_copy_key_material_into_slot( target,
uint8_t *buffer = NULL; source->data.key.data,
size_t buffer_size = 0; source->data.key.bytes );
size_t length;
buffer_size = PSA_KEY_EXPORT_MAX_SIZE( source->attr.type,
psa_get_key_slot_bits( source ) );
buffer = mbedtls_calloc( 1, buffer_size );
if( buffer == NULL )
return( PSA_ERROR_INSUFFICIENT_MEMORY );
status = psa_internal_export_key( source, buffer, buffer_size, &length, 0 );
if( status != PSA_SUCCESS ) if( status != PSA_SUCCESS )
goto exit; return( status );
target->attr.type = source->attr.type;
status = psa_import_key_into_slot( target, buffer, length );
exit: target->attr.type = source->attr.type;
mbedtls_platform_zeroize( buffer, buffer_size ); target->attr.bits = source->attr.bits;
mbedtls_free( buffer );
return( status ); return( PSA_SUCCESS );
} }
psa_status_t psa_copy_key( psa_key_handle_t source_handle, psa_status_t psa_copy_key( psa_key_handle_t source_handle,

36
library/psa_crypto_core.h
View File

@ -137,30 +137,26 @@ static inline void psa_key_slot_clear_bits( psa_key_slot_t *slot,
*/ */
psa_status_t psa_wipe_key_slot( psa_key_slot_t *slot ); psa_status_t psa_wipe_key_slot( psa_key_slot_t *slot );
/** Import key data into a slot. /** Copy key data (in export format) into an empty key slot.
* *
* `slot->type` must have been set previously. * This function assumes that the slot does not contain
* This function assumes that the slot does not contain any key material yet. * any key material yet. On failure, the slot content is unchanged.
* On failure, the slot content is unchanged.
* *
* Persistent storage is not affected. * \param[in,out] slot Key slot to copy the key into.
* \param[in] data Buffer containing the key material.
* \param data_length Size of the key buffer.
* *
* \param[in,out] slot The key slot to import data into. * \retval #PSA_SUCCESS
* Its `type` field must have previously been set to * The key has been copied successfully.
* the desired key type. * \retval #PSA_ERROR_INSUFFICIENT_MEMORY
* It must not contain any key material yet. * Not enough memory was available for allocation of the
* \param[in] data Buffer containing the key material to parse and import. * copy buffer.
* \param data_length Size of \p data in bytes. * \retval #PSA_ERROR_ALREADY_EXISTS
* * There was other key material already present in the slot.
* \retval PSA_SUCCESS
* \retval PSA_ERROR_INVALID_ARGUMENT
* \retval PSA_ERROR_NOT_SUPPORTED
* \retval PSA_ERROR_INSUFFICIENT_MEMORY
*/ */
psa_status_t psa_import_key_into_slot( psa_key_slot_t *slot, psa_status_t psa_copy_key_material_into_slot( psa_key_slot_t *slot,
const uint8_t *data, const uint8_t *data,
size_t data_length ); size_t data_length );
/** Convert an mbed TLS error code to a PSA error code /** Convert an mbed TLS error code to a PSA error code
* *

28
library/psa_crypto_driver_wrappers.c
View File

@ -410,6 +410,34 @@ psa_status_t psa_driver_wrapper_generate_key( const psa_key_attributes_t *attrib
#endif /* PSA_CRYPTO_DRIVER_PRESENT */ #endif /* PSA_CRYPTO_DRIVER_PRESENT */
} }
psa_status_t psa_driver_wrapper_validate_key( const psa_key_attributes_t *attributes,
const uint8_t *data,
size_t data_length,
size_t *bits )
{
#if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
/* Try accelerators in turn */
#if defined(PSA_CRYPTO_DRIVER_TEST)
status = test_transparent_validate_key( attributes,
data,
data_length,
bits );
/* Declared with fallback == true */
if( status != PSA_ERROR_NOT_SUPPORTED )
return( status );
#endif /* PSA_CRYPTO_DRIVER_TEST */
return( PSA_ERROR_NOT_SUPPORTED );
#else /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
(void) attributes;
(void) data;
(void) data_length;
(void) bits;
return( PSA_ERROR_NOT_SUPPORTED );
#endif /* PSA_CRYPTO_DRIVER_PRESENT */
}
/* /*
* Cipher functions * Cipher functions
*/ */

9
library/psa_crypto_driver_wrappers.h
View File

@ -43,9 +43,18 @@ psa_status_t psa_driver_wrapper_verify_hash( psa_key_slot_t *slot,
const uint8_t *signature, const uint8_t *signature,
size_t signature_length ); size_t signature_length );
/*
* Key handling functions
*/
psa_status_t psa_driver_wrapper_generate_key( const psa_key_attributes_t *attributes, psa_status_t psa_driver_wrapper_generate_key( const psa_key_attributes_t *attributes,
psa_key_slot_t *slot ); psa_key_slot_t *slot );
psa_status_t psa_driver_wrapper_validate_key( const psa_key_attributes_t *attributes,
const uint8_t *data,
size_t data_length,
size_t *bits );
/* /*
* Cipher functions * Cipher functions
*/ */

4
library/psa_crypto_slot_management.c
View File

@ -141,7 +141,9 @@ static psa_status_t psa_load_persistent_key_into_slot( psa_key_slot_t *slot )
else else
#endif /* MBEDTLS_PSA_CRYPTO_SE_C */ #endif /* MBEDTLS_PSA_CRYPTO_SE_C */
{ {
status = psa_import_key_into_slot( slot, key_data, key_data_length ); status = psa_copy_key_material_into_slot( slot, key_data, key_data_length );
if( status != PSA_SUCCESS )
goto exit;
} }
exit: exit:

5
library/psa_crypto_storage.h
View File

@ -81,9 +81,10 @@ int psa_is_key_present_in_storage( const mbedtls_svc_key_id_t key );
* This function formats the key data and metadata and saves it to a * This function formats the key data and metadata and saves it to a
* persistent storage backend. The storage location corresponding to the * persistent storage backend. The storage location corresponding to the
* key slot must be empty, otherwise this function will fail. This function * key slot must be empty, otherwise this function will fail. This function
* should be called after psa_import_key_into_slot() to ensure the * should be called after loading the key into an internal slot to ensure the
* persistent key is not saved into a storage location corresponding to an * persistent key is not saved into a storage location corresponding to an
* already occupied non-persistent key, as well as validating the key data. * already occupied non-persistent key, as well as ensuring the key data is
* validated.
* *
* *
* \param[in] attr The attributes of the key to save. * \param[in] attr The attributes of the key to save.

26
tests/include/test/drivers/keygen.h → tests/include/test/drivers/key_management.h
View File

@ -1,5 +1,5 @@
/* /*
* Test driver for generating keys. * Test driver for generating and verifying keys.
*/ */
/* Copyright The Mbed TLS Contributors /* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 * SPDX-License-Identifier: Apache-2.0
@ -17,8 +17,8 @@
* limitations under the License. * limitations under the License.
*/ */
#ifndef PSA_CRYPTO_TEST_DRIVERS_KEYGEN_H #ifndef PSA_CRYPTO_TEST_DRIVERS_KEY_MANAGEMENT_H
#define PSA_CRYPTO_TEST_DRIVERS_KEYGEN_H #define PSA_CRYPTO_TEST_DRIVERS_KEY_MANAGEMENT_H
#if !defined(MBEDTLS_CONFIG_FILE) #if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h" #include "mbedtls/config.h"
@ -36,18 +36,19 @@ typedef struct {
/* If not PSA_SUCCESS, return this error code instead of processing the /* If not PSA_SUCCESS, return this error code instead of processing the
* function call. */ * function call. */
psa_status_t forced_status; psa_status_t forced_status;
/* Count the amount of times one of the keygen driver functions is called. */ /* Count the amount of times one of the key management driver functions
* is called. */
unsigned long hits; unsigned long hits;
} test_driver_keygen_hooks_t; } test_driver_key_management_hooks_t;
#define TEST_DRIVER_KEYGEN_INIT { NULL, 0, PSA_ERROR_NOT_SUPPORTED, 0 } #define TEST_DRIVER_KEY_MANAGEMENT_INIT { NULL, 0, PSA_ERROR_NOT_SUPPORTED, 0 }
static inline test_driver_keygen_hooks_t test_driver_keygen_hooks_init( void ) static inline test_driver_key_management_hooks_t test_driver_key_management_hooks_init( void )
{ {
const test_driver_keygen_hooks_t v = TEST_DRIVER_KEYGEN_INIT; const test_driver_key_management_hooks_t v = TEST_DRIVER_KEY_MANAGEMENT_INIT;
return( v ); return( v );
} }
extern test_driver_keygen_hooks_t test_driver_keygen_hooks; extern test_driver_key_management_hooks_t test_driver_key_management_hooks;
psa_status_t test_transparent_generate_key( psa_status_t test_transparent_generate_key(
const psa_key_attributes_t *attributes, const psa_key_attributes_t *attributes,
@ -57,5 +58,10 @@ psa_status_t test_opaque_generate_key(
const psa_key_attributes_t *attributes, const psa_key_attributes_t *attributes,
uint8_t *key, size_t key_size, size_t *key_length ); uint8_t *key, size_t key_size, size_t *key_length );
psa_status_t test_transparent_validate_key(const psa_key_attributes_t *attributes,
const uint8_t *data,
size_t data_length,
size_t *bits);
#endif /* PSA_CRYPTO_DRIVER_TEST */ #endif /* PSA_CRYPTO_DRIVER_TEST */
#endif /* PSA_CRYPTO_TEST_DRIVERS_KEYGEN_H */ #endif /* PSA_CRYPTO_TEST_DRIVERS_KEY_MANAGEMENT_H */

2
tests/include/test/drivers/signature.h
View File

@ -36,7 +36,7 @@ typedef struct {
/* If not PSA_SUCCESS, return this error code instead of processing the /* If not PSA_SUCCESS, return this error code instead of processing the
* function call. */ * function call. */
psa_status_t forced_status; psa_status_t forced_status;
/* Count the amount of times one of the keygen driver functions is called. */ /* Count the amount of times one of the signature driver functions is called. */
unsigned long hits; unsigned long hits;
} test_driver_signature_hooks_t; } test_driver_signature_hooks_t;

2
tests/include/test/drivers/test_driver.h
View File

@ -23,7 +23,7 @@
#define PSA_CRYPTO_TEST_DRIVER_LIFETIME 0x7fffff #define PSA_CRYPTO_TEST_DRIVER_LIFETIME 0x7fffff
#include "test/drivers/signature.h" #include "test/drivers/signature.h"
#include "test/drivers/keygen.h" #include "test/drivers/key_management.h"
#include "test/drivers/cipher.h" #include "test/drivers/cipher.h"
#include "test/drivers/size.h" #include "test/drivers/size.h"

241
tests/src/drivers/key_management.c Normal file
View File

@ -0,0 +1,241 @@
/*
* Test driver for generating and verifying keys.
* Currently only supports generating and verifying ECC keys.
*/
/* 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.
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PSA_CRYPTO_DRIVERS) && defined(PSA_CRYPTO_DRIVER_TEST)
#include "psa/crypto.h"
#include "psa_crypto_core.h"
#include "mbedtls/ecp.h"
#include "mbedtls/error.h"
#include "test/drivers/key_management.h"
#include "test/random.h"
#include <string.h>
test_driver_key_management_hooks_t test_driver_key_management_hooks =
TEST_DRIVER_KEY_MANAGEMENT_INIT;
psa_status_t test_transparent_generate_key(
const psa_key_attributes_t *attributes,
uint8_t *key, size_t key_size, size_t *key_length )
{
++test_driver_key_management_hooks.hits;
if( test_driver_key_management_hooks.forced_status != PSA_SUCCESS )
return( test_driver_key_management_hooks.forced_status );
if( test_driver_key_management_hooks.forced_output != NULL )
{
if( test_driver_key_management_hooks.forced_output_length > key_size )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( key, test_driver_key_management_hooks.forced_output,
test_driver_key_management_hooks.forced_output_length );
*key_length = test_driver_key_management_hooks.forced_output_length;
return( PSA_SUCCESS );
}
/* Copied from psa_crypto.c */
#if defined(MBEDTLS_ECP_C)
if ( PSA_KEY_TYPE_IS_ECC( psa_get_key_type( attributes ) )
&& PSA_KEY_TYPE_IS_KEY_PAIR( psa_get_key_type( attributes ) ) )
{
psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY(
psa_get_key_type( attributes ) );
mbedtls_ecp_group_id grp_id =
mbedtls_ecc_group_of_psa(
curve,
PSA_BITS_TO_BYTES( psa_get_key_bits( attributes ) ) );
const mbedtls_ecp_curve_info *curve_info =
mbedtls_ecp_curve_info_from_grp_id( grp_id );
mbedtls_ecp_keypair ecp;
mbedtls_test_rnd_pseudo_info rnd_info;
memset( &rnd_info, 0x5A, sizeof( mbedtls_test_rnd_pseudo_info ) );
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( attributes->domain_parameters_size != 0 )
return( PSA_ERROR_NOT_SUPPORTED );
if( grp_id == MBEDTLS_ECP_DP_NONE || curve_info == NULL )
return( PSA_ERROR_NOT_SUPPORTED );
if( curve_info->bit_size != psa_get_key_bits( attributes ) )
return( PSA_ERROR_INVALID_ARGUMENT );
mbedtls_ecp_keypair_init( &ecp );
ret = mbedtls_ecp_gen_key( grp_id, &ecp,
&mbedtls_test_rnd_pseudo_rand,
&rnd_info );
if( ret != 0 )
{
mbedtls_ecp_keypair_free( &ecp );
return( mbedtls_to_psa_error( ret ) );
}
/* Make sure to use export representation */
size_t bytes = PSA_BITS_TO_BYTES( psa_get_key_bits( attributes ) );
if( key_size < bytes )
{
mbedtls_ecp_keypair_free( &ecp );
return( PSA_ERROR_BUFFER_TOO_SMALL );
}
psa_status_t status = mbedtls_to_psa_error(
mbedtls_mpi_write_binary( &ecp.d, key, bytes ) );
if( status == PSA_SUCCESS )
{
*key_length = bytes;
}
else
{
memset( key, 0, bytes );
}
mbedtls_ecp_keypair_free( &ecp );
return( status );
}
else
#endif /* MBEDTLS_ECP_C */
return( PSA_ERROR_NOT_SUPPORTED );
}
psa_status_t test_opaque_generate_key(
const psa_key_attributes_t *attributes,
uint8_t *key, size_t key_size, size_t *key_length )
{
(void) attributes;
(void) key;
(void) key_size;
(void) key_length;
return( PSA_ERROR_NOT_SUPPORTED );
}
psa_status_t test_transparent_validate_key(const psa_key_attributes_t *attributes,
const uint8_t *data,
size_t data_length,
size_t *bits)
{
++test_driver_key_management_hooks.hits;
if( test_driver_key_management_hooks.forced_status != PSA_SUCCESS )
return( test_driver_key_management_hooks.forced_status );
#if defined(MBEDTLS_ECP_C)
psa_key_type_t type = psa_get_key_type( attributes );
if ( PSA_KEY_TYPE_IS_ECC( type ) )
{
// Code mostly copied from psa_load_ecp_representation
psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY( type );
mbedtls_ecp_group_id grp_id;
mbedtls_ecp_keypair ecp;
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
if( psa_get_key_bits( attributes ) == 0 )
{
// Attempt auto-detect of curve bit size
size_t curve_size = data_length;
if( PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) &&
PSA_KEY_TYPE_ECC_GET_FAMILY( type ) != PSA_ECC_FAMILY_MONTGOMERY )
{
/* A Weierstrass public key is represented as:
* - The byte 0x04;
* - `x_P` as a `ceiling(m/8)`-byte string, big-endian;
* - `y_P` as a `ceiling(m/8)`-byte string, big-endian.
* So its data length is 2m+1 where m is the curve size in bits.
*/
if( ( data_length & 1 ) == 0 )
return( PSA_ERROR_INVALID_ARGUMENT );
curve_size = data_length / 2;
/* Montgomery public keys are represented in compressed format, meaning
* their curve_size is equal to the amount of input. */
/* Private keys are represented in uncompressed private random integer
* format, meaning their curve_size is equal to the amount of input. */
}
grp_id = mbedtls_ecc_group_of_psa( curve, curve_size );
}
else
{
grp_id = mbedtls_ecc_group_of_psa( curve,
PSA_BITS_TO_BYTES( psa_get_key_bits( attributes ) ) );
}
const mbedtls_ecp_curve_info *curve_info =
mbedtls_ecp_curve_info_from_grp_id( grp_id );
if( attributes->domain_parameters_size != 0 )
return( PSA_ERROR_NOT_SUPPORTED );
if( grp_id == MBEDTLS_ECP_DP_NONE || curve_info == NULL )
return( PSA_ERROR_NOT_SUPPORTED );
*bits = curve_info->bit_size;
mbedtls_ecp_keypair_init( &ecp );
status = mbedtls_to_psa_error(
mbedtls_ecp_group_load( &ecp.grp, grp_id ) );
if( status != PSA_SUCCESS )
goto ecp_exit;
/* Load the key material. */
if( PSA_KEY_TYPE_IS_PUBLIC_KEY( type ) )
{
/* Load the public value. */
status = mbedtls_to_psa_error(
mbedtls_ecp_point_read_binary( &ecp.grp, &ecp.Q,
data,
data_length ) );
if( status != PSA_SUCCESS )
goto ecp_exit;
/* Check that the point is on the curve. */
status = mbedtls_to_psa_error(
mbedtls_ecp_check_pubkey( &ecp.grp, &ecp.Q ) );
}
else
{
/* Load and validate the secret value. */
status = mbedtls_to_psa_error(
mbedtls_ecp_read_key( ecp.grp.id,
&ecp,
data,
data_length ) );
}
ecp_exit:
mbedtls_ecp_keypair_free( &ecp );
return( status );
}
return( PSA_ERROR_NOT_SUPPORTED );
#else
(void) data;
(void) data_length;
(void) bits;
return( PSA_ERROR_NOT_SUPPORTED );
#endif /* MBEDTLS_ECP_C */
}
#endif /* MBEDTLS_PSA_CRYPTO_DRIVERS && PSA_CRYPTO_DRIVER_TEST */

125
tests/src/drivers/keygen.c
View File

@ -1,125 +0,0 @@
/*
* Test driver for generating keys.
* Currently only supports generating ECC keys.
*/
/* 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.
*/
#if !defined(MBEDTLS_CONFIG_FILE)
#include "mbedtls/config.h"
#else
#include MBEDTLS_CONFIG_FILE
#endif
#if defined(MBEDTLS_PSA_CRYPTO_DRIVERS) && defined(PSA_CRYPTO_DRIVER_TEST)
#include "psa/crypto.h"
#include "psa_crypto_core.h"
#include "mbedtls/ecp.h"
#include "mbedtls/error.h"
#include "test/drivers/keygen.h"
#include "test/random.h"
#include <string.h>
test_driver_keygen_hooks_t test_driver_keygen_hooks = TEST_DRIVER_KEYGEN_INIT;
psa_status_t test_transparent_generate_key(
const psa_key_attributes_t *attributes,
uint8_t *key, size_t key_size, size_t *key_length )
{
++test_driver_keygen_hooks.hits;
if( test_driver_keygen_hooks.forced_status != PSA_SUCCESS )
return( test_driver_keygen_hooks.forced_status );
if( test_driver_keygen_hooks.forced_output != NULL )
{
if( test_driver_keygen_hooks.forced_output_length > key_size )
return( PSA_ERROR_BUFFER_TOO_SMALL );
memcpy( key, test_driver_keygen_hooks.forced_output,
test_driver_keygen_hooks.forced_output_length );
*key_length = test_driver_keygen_hooks.forced_output_length;
return( PSA_SUCCESS );
}
/* Copied from psa_crypto.c */
#if defined(MBEDTLS_ECP_C)
if ( PSA_KEY_TYPE_IS_ECC( psa_get_key_type( attributes ) )
&& PSA_KEY_TYPE_IS_KEY_PAIR( psa_get_key_type( attributes ) ) )
{
psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY( psa_get_key_type( attributes ) );
mbedtls_ecp_group_id grp_id =
mbedtls_ecc_group_of_psa( curve, PSA_BITS_TO_BYTES( psa_get_key_bits( attributes ) ) );
const mbedtls_ecp_curve_info *curve_info =
mbedtls_ecp_curve_info_from_grp_id( grp_id );
mbedtls_ecp_keypair ecp;
mbedtls_test_rnd_pseudo_info rnd_info;
memset( &rnd_info, 0x5A, sizeof( mbedtls_test_rnd_pseudo_info ) );
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if( attributes->domain_parameters_size != 0 )
return( PSA_ERROR_NOT_SUPPORTED );
if( grp_id == MBEDTLS_ECP_DP_NONE || curve_info == NULL )
return( PSA_ERROR_NOT_SUPPORTED );
if( curve_info->bit_size != psa_get_key_bits( attributes ) )
return( PSA_ERROR_INVALID_ARGUMENT );
mbedtls_ecp_keypair_init( &ecp );
ret = mbedtls_ecp_gen_key( grp_id, &ecp,
&mbedtls_test_rnd_pseudo_rand,
&rnd_info );
if( ret != 0 )
{
mbedtls_ecp_keypair_free( &ecp );
return( mbedtls_to_psa_error( ret ) );
}
/* Make sure to use export representation */
size_t bytes = PSA_BITS_TO_BYTES( psa_get_key_bits( attributes ) );
if( key_size < bytes )
{
mbedtls_ecp_keypair_free( &ecp );
return( PSA_ERROR_BUFFER_TOO_SMALL );
}
psa_status_t status = mbedtls_to_psa_error(
mbedtls_mpi_write_binary( &ecp.d, key, bytes ) );
if( status == PSA_SUCCESS )
{
*key_length = bytes;
}
mbedtls_ecp_keypair_free( &ecp );
return( status );
}
else
#endif /* MBEDTLS_ECP_C */
return( PSA_ERROR_NOT_SUPPORTED );
}
psa_status_t test_opaque_generate_key(
const psa_key_attributes_t *attributes,
uint8_t *key, size_t key_size, size_t *key_length )
{
(void) attributes;
(void) key;
(void) key_size;
(void) key_length;
return( PSA_ERROR_NOT_SUPPORTED );
}
#endif /* MBEDTLS_PSA_CRYPTO_DRIVERS && PSA_CRYPTO_DRIVER_TEST */

19
tests/suites/test_suite_psa_crypto_driver_wrappers.data
View File

@ -40,6 +40,25 @@ generate_key:PSA_ERROR_NOT_SUPPORTED:"":PSA_SUCCESS
generate_key through transparent driver: error generate_key through transparent driver: error
generate_key:PSA_ERROR_GENERIC_ERROR:"":PSA_ERROR_GENERIC_ERROR generate_key:PSA_ERROR_GENERIC_ERROR:"":PSA_ERROR_GENERIC_ERROR
validate key through transparent driver: good private key
depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
validate_key:PSA_SUCCESS:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":PSA_SUCCESS
validate key through transparent driver: good public key
depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
validate_key:PSA_SUCCESS:PSA_KEY_TYPE_ECC_PUBLIC_KEY(PSA_ECC_FAMILY_SECP_R1):"04dea5e45d0ea37fc566232a508f4ad20ea13d47e4bf5fa4d54a57a0ba012042087097496efc583fed8b24a5b9be9a51de063f5a00a8b698a16fd7f29b5485f320":PSA_SUCCESS
validate key through transparent driver: fallback private key
depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
validate_key:PSA_ERROR_NOT_SUPPORTED:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":PSA_SUCCESS
validate key through transparent driver: fallback public key
depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_PK_WRITE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
validate_key:PSA_ERROR_NOT_SUPPORTED:PSA_KEY_TYPE_ECC_PUBLIC_KEY(PSA_ECC_FAMILY_SECP_R1):"04dea5e45d0ea37fc566232a508f4ad20ea13d47e4bf5fa4d54a57a0ba012042087097496efc583fed8b24a5b9be9a51de063f5a00a8b698a16fd7f29b5485f320":PSA_SUCCESS
validate key through transparent driver: error
validate_key:PSA_ERROR_GENERIC_ERROR:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"49c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eee":PSA_ERROR_GENERIC_ERROR
PSA symmetric encrypt: AES-CTR, 16 bytes, good PSA symmetric encrypt: AES-CTR, 16 bytes, good
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
cipher_encrypt:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"2b7e151628aed2a6abf7158809cf4f3c":"2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a":"6bc1bee22e409f96e93d7e117393172a":"8f9408fe80a81d3e813da3c7b0b2bd32":0:PSA_SUCCESS:PSA_SUCCESS cipher_encrypt:PSA_ALG_CTR:PSA_KEY_TYPE_AES:"2b7e151628aed2a6abf7158809cf4f3c":"2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a2a":"6bc1bee22e409f96e93d7e117393172a":"8f9408fe80a81d3e813da3c7b0b2bd32":0:PSA_SUCCESS:PSA_SUCCESS

48
tests/suites/test_suite_psa_crypto_driver_wrappers.function
View File

@ -132,7 +132,7 @@ void generate_key( int force_status_arg,
psa_status_t actual_status; psa_status_t actual_status;
uint8_t actual_output[PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(256)] = {0}; uint8_t actual_output[PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(256)] = {0};
size_t actual_output_length; size_t actual_output_length;
test_driver_keygen_hooks = test_driver_keygen_hooks_init(); test_driver_key_management_hooks = test_driver_key_management_hooks_init();
psa_set_key_type( &attributes, psa_set_key_type( &attributes,
PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_CURVE_SECP_R1 ) ); PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_CURVE_SECP_R1 ) );
@ -142,18 +142,18 @@ void generate_key( int force_status_arg,
if( fake_output->len > 0 ) if( fake_output->len > 0 )
{ {
expected_output = test_driver_keygen_hooks.forced_output = fake_output->x; expected_output = test_driver_key_management_hooks.forced_output = fake_output->x;
expected_output_length = test_driver_keygen_hooks.forced_output_length = expected_output_length = test_driver_key_management_hooks.forced_output_length =
fake_output->len; fake_output->len;
} }
test_driver_keygen_hooks.hits = 0; test_driver_key_management_hooks.hits = 0;
test_driver_keygen_hooks.forced_status = force_status; test_driver_key_management_hooks.forced_status = force_status;
PSA_ASSERT( psa_crypto_init( ) ); PSA_ASSERT( psa_crypto_init( ) );
actual_status = psa_generate_key( &attributes, &handle ); actual_status = psa_generate_key( &attributes, &handle );
TEST_EQUAL( test_driver_keygen_hooks.hits, 1 ); TEST_EQUAL( test_driver_key_management_hooks.hits, 1 );
TEST_EQUAL( actual_status, expected_status ); TEST_EQUAL( actual_status, expected_status );
if( actual_status == PSA_SUCCESS ) if( actual_status == PSA_SUCCESS )
@ -180,7 +180,41 @@ exit:
psa_reset_key_attributes( &attributes ); psa_reset_key_attributes( &attributes );
psa_destroy_key( handle ); psa_destroy_key( handle );
PSA_DONE( ); PSA_DONE( );
test_driver_keygen_hooks = test_driver_keygen_hooks_init(); test_driver_key_management_hooks = test_driver_key_management_hooks_init();
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED */
void validate_key( int force_status_arg,
int key_type_arg,
data_t *key_input,
int expected_status_arg )
{
psa_status_t force_status = force_status_arg;
psa_status_t expected_status = expected_status_arg;
psa_key_type_t key_type = key_type_arg;
psa_key_handle_t handle = 0;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_status_t actual_status;
test_driver_key_management_hooks = test_driver_key_management_hooks_init();
psa_set_key_type( &attributes,
key_type );
psa_set_key_bits( &attributes, 0 );
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_EXPORT );
test_driver_key_management_hooks.forced_status = force_status;
PSA_ASSERT( psa_crypto_init( ) );
actual_status = psa_import_key( &attributes, key_input->x, key_input->len, &handle );
TEST_EQUAL( test_driver_key_management_hooks.hits, 1 );
TEST_EQUAL( actual_status, expected_status );
exit:
psa_reset_key_attributes( &attributes );
psa_destroy_key( handle );
PSA_DONE( );
test_driver_key_management_hooks = test_driver_key_management_hooks_init();
} }
/* END_CASE */ /* END_CASE */

2
visualc/VS2010/mbedTLS.vcxproj
View File

@ -241,7 +241,7 @@
<ClInclude Include="..\..\tests\include\test\psa_helpers.h" /> <ClInclude Include="..\..\tests\include\test\psa_helpers.h" />
<ClInclude Include="..\..\tests\include\test\random.h" /> <ClInclude Include="..\..\tests\include\test\random.h" />
<ClInclude Include="..\..\tests\include\test\drivers\cipher.h" /> <ClInclude Include="..\..\tests\include\test\drivers\cipher.h" />
<ClInclude Include="..\..\tests\include\test\drivers\keygen.h" /> <ClInclude Include="..\..\tests\include\test\drivers\key_management.h" />
<ClInclude Include="..\..\tests\include\test\drivers\signature.h" /> <ClInclude Include="..\..\tests\include\test\drivers\signature.h" />
<ClInclude Include="..\..\tests\include\test\drivers\size.h" /> <ClInclude Include="..\..\tests\include\test\drivers\size.h" />
<ClInclude Include="..\..\tests\include\test\drivers\test_driver.h" /> <ClInclude Include="..\..\tests\include\test\drivers\test_driver.h" />