/* | |
* Public Key abstraction layer | |
* | |
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved | |
* 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. | |
* | |
* This file is part of mbed TLS (https://tls.mbed.org) | |
*/ | |
#if !defined(MBEDTLS_CONFIG_FILE) | |
#include "mbedtls/config.h" | |
#else | |
#include MBEDTLS_CONFIG_FILE | |
#endif | |
#if defined(MBEDTLS_PK_C) | |
#include "mbedtls/pk.h" | |
#include "mbedtls/pk_internal.h" | |
#include "mbedtls/platform_util.h" | |
#if defined(MBEDTLS_RSA_C) | |
#include "mbedtls/rsa.h" | |
#endif | |
#if defined(MBEDTLS_ECP_C) | |
#include "mbedtls/ecp.h" | |
#endif | |
#if defined(MBEDTLS_ECDSA_C) | |
#include "mbedtls/ecdsa.h" | |
#endif | |
#if defined(MBEDTLS_USE_PSA_CRYPTO) | |
#include "mbedtls/psa_util.h" | |
#endif | |
#include <limits.h> | |
#include <stdint.h> | |
/* Parameter validation macros based on platform_util.h */ | |
#define PK_VALIDATE_RET( cond ) \ | |
MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_PK_BAD_INPUT_DATA ) | |
#define PK_VALIDATE( cond ) \ | |
MBEDTLS_INTERNAL_VALIDATE( cond ) | |
/* | |
* Initialise a mbedtls_pk_context | |
*/ | |
void mbedtls_pk_init( mbedtls_pk_context *ctx ) | |
{ | |
PK_VALIDATE( ctx != NULL ); | |
ctx->pk_info = NULL; | |
ctx->pk_ctx = NULL; | |
} | |
/* | |
* Free (the components of) a mbedtls_pk_context | |
*/ | |
void mbedtls_pk_free( mbedtls_pk_context *ctx ) | |
{ | |
if( ctx == NULL ) | |
return; | |
if ( ctx->pk_info != NULL ) | |
ctx->pk_info->ctx_free_func( ctx->pk_ctx ); | |
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_pk_context ) ); | |
} | |
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) | |
/* | |
* Initialize a restart context | |
*/ | |
void mbedtls_pk_restart_init( mbedtls_pk_restart_ctx *ctx ) | |
{ | |
PK_VALIDATE( ctx != NULL ); | |
ctx->pk_info = NULL; | |
ctx->rs_ctx = NULL; | |
} | |
/* | |
* Free the components of a restart context | |
*/ | |
void mbedtls_pk_restart_free( mbedtls_pk_restart_ctx *ctx ) | |
{ | |
if( ctx == NULL || ctx->pk_info == NULL || | |
ctx->pk_info->rs_free_func == NULL ) | |
{ | |
return; | |
} | |
ctx->pk_info->rs_free_func( ctx->rs_ctx ); | |
ctx->pk_info = NULL; | |
ctx->rs_ctx = NULL; | |
} | |
#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ | |
/* | |
* Get pk_info structure from type | |
*/ | |
const mbedtls_pk_info_t * mbedtls_pk_info_from_type( mbedtls_pk_type_t pk_type ) | |
{ | |
switch( pk_type ) { | |
#if defined(MBEDTLS_RSA_C) | |
case MBEDTLS_PK_RSA: | |
return( &mbedtls_rsa_info ); | |
#endif | |
#if defined(MBEDTLS_ECP_C) | |
case MBEDTLS_PK_ECKEY: | |
return( &mbedtls_eckey_info ); | |
case MBEDTLS_PK_ECKEY_DH: | |
return( &mbedtls_eckeydh_info ); | |
#endif | |
#if defined(MBEDTLS_ECDSA_C) | |
case MBEDTLS_PK_ECDSA: | |
return( &mbedtls_ecdsa_info ); | |
#endif | |
/* MBEDTLS_PK_RSA_ALT omitted on purpose */ | |
default: | |
return( NULL ); | |
} | |
} | |
/* | |
* Initialise context | |
*/ | |
int mbedtls_pk_setup( mbedtls_pk_context *ctx, const mbedtls_pk_info_t *info ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
if( info == NULL || ctx->pk_info != NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL ) | |
return( MBEDTLS_ERR_PK_ALLOC_FAILED ); | |
ctx->pk_info = info; | |
return( 0 ); | |
} | |
#if defined(MBEDTLS_USE_PSA_CRYPTO) | |
/* | |
* Initialise a PSA-wrapping context | |
*/ | |
int mbedtls_pk_setup_opaque( mbedtls_pk_context *ctx, const psa_key_handle_t key ) | |
{ | |
const mbedtls_pk_info_t * const info = &mbedtls_pk_opaque_info; | |
psa_key_handle_t *pk_ctx; | |
psa_key_type_t type; | |
if( ctx == NULL || ctx->pk_info != NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( PSA_SUCCESS != psa_get_key_information( key, &type, NULL ) ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
/* Current implementation of can_do() relies on this. */ | |
if( ! PSA_KEY_TYPE_IS_ECC_KEYPAIR( type ) ) | |
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE) ; | |
if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL ) | |
return( MBEDTLS_ERR_PK_ALLOC_FAILED ); | |
ctx->pk_info = info; | |
pk_ctx = (psa_key_handle_t *) ctx->pk_ctx; | |
*pk_ctx = key; | |
return( 0 ); | |
} | |
#endif /* MBEDTLS_USE_PSA_CRYPTO */ | |
#if defined(MBEDTLS_PK_RSA_ALT_SUPPORT) | |
/* | |
* Initialize an RSA-alt context | |
*/ | |
int mbedtls_pk_setup_rsa_alt( mbedtls_pk_context *ctx, void * key, | |
mbedtls_pk_rsa_alt_decrypt_func decrypt_func, | |
mbedtls_pk_rsa_alt_sign_func sign_func, | |
mbedtls_pk_rsa_alt_key_len_func key_len_func ) | |
{ | |
mbedtls_rsa_alt_context *rsa_alt; | |
const mbedtls_pk_info_t *info = &mbedtls_rsa_alt_info; | |
PK_VALIDATE_RET( ctx != NULL ); | |
if( ctx->pk_info != NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL ) | |
return( MBEDTLS_ERR_PK_ALLOC_FAILED ); | |
ctx->pk_info = info; | |
rsa_alt = (mbedtls_rsa_alt_context *) ctx->pk_ctx; | |
rsa_alt->key = key; | |
rsa_alt->decrypt_func = decrypt_func; | |
rsa_alt->sign_func = sign_func; | |
rsa_alt->key_len_func = key_len_func; | |
return( 0 ); | |
} | |
#endif /* MBEDTLS_PK_RSA_ALT_SUPPORT */ | |
/* | |
* Tell if a PK can do the operations of the given type | |
*/ | |
int mbedtls_pk_can_do( const mbedtls_pk_context *ctx, mbedtls_pk_type_t type ) | |
{ | |
/* A context with null pk_info is not set up yet and can't do anything. | |
* For backward compatibility, also accept NULL instead of a context | |
* pointer. */ | |
if( ctx == NULL || ctx->pk_info == NULL ) | |
return( 0 ); | |
return( ctx->pk_info->can_do( type ) ); | |
} | |
/* | |
* Helper for mbedtls_pk_sign and mbedtls_pk_verify | |
*/ | |
static inline int pk_hashlen_helper( mbedtls_md_type_t md_alg, size_t *hash_len ) | |
{ | |
const mbedtls_md_info_t *md_info; | |
if( *hash_len != 0 ) | |
return( 0 ); | |
if( ( md_info = mbedtls_md_info_from_type( md_alg ) ) == NULL ) | |
return( -1 ); | |
*hash_len = mbedtls_md_get_size( md_info ); | |
return( 0 ); | |
} | |
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) | |
/* | |
* Helper to set up a restart context if needed | |
*/ | |
static int pk_restart_setup( mbedtls_pk_restart_ctx *ctx, | |
const mbedtls_pk_info_t *info ) | |
{ | |
/* Don't do anything if already set up or invalid */ | |
if( ctx == NULL || ctx->pk_info != NULL ) | |
return( 0 ); | |
/* Should never happen when we're called */ | |
if( info->rs_alloc_func == NULL || info->rs_free_func == NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ( ctx->rs_ctx = info->rs_alloc_func() ) == NULL ) | |
return( MBEDTLS_ERR_PK_ALLOC_FAILED ); | |
ctx->pk_info = info; | |
return( 0 ); | |
} | |
#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ | |
/* | |
* Verify a signature (restartable) | |
*/ | |
int mbedtls_pk_verify_restartable( mbedtls_pk_context *ctx, | |
mbedtls_md_type_t md_alg, | |
const unsigned char *hash, size_t hash_len, | |
const unsigned char *sig, size_t sig_len, | |
mbedtls_pk_restart_ctx *rs_ctx ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) || | |
hash != NULL ); | |
PK_VALIDATE_RET( sig != NULL ); | |
if( ctx->pk_info == NULL || | |
pk_hashlen_helper( md_alg, &hash_len ) != 0 ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) | |
/* optimization: use non-restartable version if restart disabled */ | |
if( rs_ctx != NULL && | |
mbedtls_ecp_restart_is_enabled() && | |
ctx->pk_info->verify_rs_func != NULL ) | |
{ | |
int ret; | |
if( ( ret = pk_restart_setup( rs_ctx, ctx->pk_info ) ) != 0 ) | |
return( ret ); | |
ret = ctx->pk_info->verify_rs_func( ctx->pk_ctx, | |
md_alg, hash, hash_len, sig, sig_len, rs_ctx->rs_ctx ); | |
if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) | |
mbedtls_pk_restart_free( rs_ctx ); | |
return( ret ); | |
} | |
#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ | |
(void) rs_ctx; | |
#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ | |
if( ctx->pk_info->verify_func == NULL ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
return( ctx->pk_info->verify_func( ctx->pk_ctx, md_alg, hash, hash_len, | |
sig, sig_len ) ); | |
} | |
/* | |
* Verify a signature | |
*/ | |
int mbedtls_pk_verify( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, | |
const unsigned char *hash, size_t hash_len, | |
const unsigned char *sig, size_t sig_len ) | |
{ | |
return( mbedtls_pk_verify_restartable( ctx, md_alg, hash, hash_len, | |
sig, sig_len, NULL ) ); | |
} | |
/* | |
* Verify a signature with options | |
*/ | |
int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options, | |
mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, | |
const unsigned char *hash, size_t hash_len, | |
const unsigned char *sig, size_t sig_len ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) || | |
hash != NULL ); | |
PK_VALIDATE_RET( sig != NULL ); | |
if( ctx->pk_info == NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ! mbedtls_pk_can_do( ctx, type ) ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
if( type == MBEDTLS_PK_RSASSA_PSS ) | |
{ | |
#if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21) | |
int ret; | |
const mbedtls_pk_rsassa_pss_options *pss_opts; | |
#if SIZE_MAX > UINT_MAX | |
if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
#endif /* SIZE_MAX > UINT_MAX */ | |
if( options == NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
pss_opts = (const mbedtls_pk_rsassa_pss_options *) options; | |
if( sig_len < mbedtls_pk_get_len( ctx ) ) | |
return( MBEDTLS_ERR_RSA_VERIFY_FAILED ); | |
ret = mbedtls_rsa_rsassa_pss_verify_ext( mbedtls_pk_rsa( *ctx ), | |
NULL, NULL, MBEDTLS_RSA_PUBLIC, | |
md_alg, (unsigned int) hash_len, hash, | |
pss_opts->mgf1_hash_id, | |
pss_opts->expected_salt_len, | |
sig ); | |
if( ret != 0 ) | |
return( ret ); | |
if( sig_len > mbedtls_pk_get_len( ctx ) ) | |
return( MBEDTLS_ERR_PK_SIG_LEN_MISMATCH ); | |
return( 0 ); | |
#else | |
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); | |
#endif /* MBEDTLS_RSA_C && MBEDTLS_PKCS1_V21 */ | |
} | |
/* General case: no options */ | |
if( options != NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
return( mbedtls_pk_verify( ctx, md_alg, hash, hash_len, sig, sig_len ) ); | |
} | |
/* | |
* Make a signature (restartable) | |
*/ | |
int mbedtls_pk_sign_restartable( mbedtls_pk_context *ctx, | |
mbedtls_md_type_t md_alg, | |
const unsigned char *hash, size_t hash_len, | |
unsigned char *sig, size_t *sig_len, | |
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng, | |
mbedtls_pk_restart_ctx *rs_ctx ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) || | |
hash != NULL ); | |
PK_VALIDATE_RET( sig != NULL ); | |
if( ctx->pk_info == NULL || | |
pk_hashlen_helper( md_alg, &hash_len ) != 0 ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
#if defined(MBEDTLS_ECDSA_C) && defined(MBEDTLS_ECP_RESTARTABLE) | |
/* optimization: use non-restartable version if restart disabled */ | |
if( rs_ctx != NULL && | |
mbedtls_ecp_restart_is_enabled() && | |
ctx->pk_info->sign_rs_func != NULL ) | |
{ | |
int ret; | |
if( ( ret = pk_restart_setup( rs_ctx, ctx->pk_info ) ) != 0 ) | |
return( ret ); | |
ret = ctx->pk_info->sign_rs_func( ctx->pk_ctx, md_alg, | |
hash, hash_len, sig, sig_len, f_rng, p_rng, rs_ctx->rs_ctx ); | |
if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS ) | |
mbedtls_pk_restart_free( rs_ctx ); | |
return( ret ); | |
} | |
#else /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ | |
(void) rs_ctx; | |
#endif /* MBEDTLS_ECDSA_C && MBEDTLS_ECP_RESTARTABLE */ | |
if( ctx->pk_info->sign_func == NULL ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
return( ctx->pk_info->sign_func( ctx->pk_ctx, md_alg, hash, hash_len, | |
sig, sig_len, f_rng, p_rng ) ); | |
} | |
/* | |
* Make a signature | |
*/ | |
int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg, | |
const unsigned char *hash, size_t hash_len, | |
unsigned char *sig, size_t *sig_len, | |
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) | |
{ | |
return( mbedtls_pk_sign_restartable( ctx, md_alg, hash, hash_len, | |
sig, sig_len, f_rng, p_rng, NULL ) ); | |
} | |
/* | |
* Decrypt message | |
*/ | |
int mbedtls_pk_decrypt( mbedtls_pk_context *ctx, | |
const unsigned char *input, size_t ilen, | |
unsigned char *output, size_t *olen, size_t osize, | |
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
PK_VALIDATE_RET( input != NULL || ilen == 0 ); | |
PK_VALIDATE_RET( output != NULL || osize == 0 ); | |
PK_VALIDATE_RET( olen != NULL ); | |
if( ctx->pk_info == NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ctx->pk_info->decrypt_func == NULL ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
return( ctx->pk_info->decrypt_func( ctx->pk_ctx, input, ilen, | |
output, olen, osize, f_rng, p_rng ) ); | |
} | |
/* | |
* Encrypt message | |
*/ | |
int mbedtls_pk_encrypt( mbedtls_pk_context *ctx, | |
const unsigned char *input, size_t ilen, | |
unsigned char *output, size_t *olen, size_t osize, | |
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
PK_VALIDATE_RET( input != NULL || ilen == 0 ); | |
PK_VALIDATE_RET( output != NULL || osize == 0 ); | |
PK_VALIDATE_RET( olen != NULL ); | |
if( ctx->pk_info == NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ctx->pk_info->encrypt_func == NULL ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
return( ctx->pk_info->encrypt_func( ctx->pk_ctx, input, ilen, | |
output, olen, osize, f_rng, p_rng ) ); | |
} | |
/* | |
* Check public-private key pair | |
*/ | |
int mbedtls_pk_check_pair( const mbedtls_pk_context *pub, const mbedtls_pk_context *prv ) | |
{ | |
PK_VALIDATE_RET( pub != NULL ); | |
PK_VALIDATE_RET( prv != NULL ); | |
if( pub->pk_info == NULL || | |
prv->pk_info == NULL ) | |
{ | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
} | |
if( prv->pk_info->check_pair_func == NULL ) | |
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); | |
if( prv->pk_info->type == MBEDTLS_PK_RSA_ALT ) | |
{ | |
if( pub->pk_info->type != MBEDTLS_PK_RSA ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
} | |
else | |
{ | |
if( pub->pk_info != prv->pk_info ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
} | |
return( prv->pk_info->check_pair_func( pub->pk_ctx, prv->pk_ctx ) ); | |
} | |
/* | |
* Get key size in bits | |
*/ | |
size_t mbedtls_pk_get_bitlen( const mbedtls_pk_context *ctx ) | |
{ | |
/* For backward compatibility, accept NULL or a context that | |
* isn't set up yet, and return a fake value that should be safe. */ | |
if( ctx == NULL || ctx->pk_info == NULL ) | |
return( 0 ); | |
return( ctx->pk_info->get_bitlen( ctx->pk_ctx ) ); | |
} | |
/* | |
* Export debug information | |
*/ | |
int mbedtls_pk_debug( const mbedtls_pk_context *ctx, mbedtls_pk_debug_item *items ) | |
{ | |
PK_VALIDATE_RET( ctx != NULL ); | |
if( ctx->pk_info == NULL ) | |
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA ); | |
if( ctx->pk_info->debug_func == NULL ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
ctx->pk_info->debug_func( ctx->pk_ctx, items ); | |
return( 0 ); | |
} | |
/* | |
* Access the PK type name | |
*/ | |
const char *mbedtls_pk_get_name( const mbedtls_pk_context *ctx ) | |
{ | |
if( ctx == NULL || ctx->pk_info == NULL ) | |
return( "invalid PK" ); | |
return( ctx->pk_info->name ); | |
} | |
/* | |
* Access the PK type | |
*/ | |
mbedtls_pk_type_t mbedtls_pk_get_type( const mbedtls_pk_context *ctx ) | |
{ | |
if( ctx == NULL || ctx->pk_info == NULL ) | |
return( MBEDTLS_PK_NONE ); | |
return( ctx->pk_info->type ); | |
} | |
#if defined(MBEDTLS_USE_PSA_CRYPTO) | |
/* | |
* Load the key to a PSA key slot, | |
* then turn the PK context into a wrapper for that key slot. | |
* | |
* Currently only works for EC private keys. | |
*/ | |
int mbedtls_pk_wrap_as_opaque( mbedtls_pk_context *pk, | |
psa_key_handle_t *slot, | |
psa_algorithm_t hash_alg ) | |
{ | |
#if !defined(MBEDTLS_ECP_C) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
#else | |
psa_key_handle_t key; | |
const mbedtls_ecp_keypair *ec; | |
unsigned char d[MBEDTLS_ECP_MAX_BYTES]; | |
size_t d_len; | |
psa_ecc_curve_t curve_id; | |
psa_key_type_t key_type; | |
psa_key_policy_t policy; | |
int ret; | |
/* export the private key material in the format PSA wants */ | |
if( mbedtls_pk_get_type( pk ) != MBEDTLS_PK_ECKEY ) | |
return( MBEDTLS_ERR_PK_TYPE_MISMATCH ); | |
ec = mbedtls_pk_ec( *pk ); | |
d_len = ( ec->grp.nbits + 7 ) / 8; | |
if( ( ret = mbedtls_mpi_write_binary( &ec->d, d, d_len ) ) != 0 ) | |
return( ret ); | |
curve_id = mbedtls_ecp_curve_info_from_grp_id( ec->grp.id )->tls_id; | |
key_type = PSA_KEY_TYPE_ECC_KEYPAIR( | |
mbedtls_psa_parse_tls_ecc_group ( curve_id ) ); | |
/* allocate a key slot */ | |
if( PSA_SUCCESS != psa_allocate_key( &key ) ) | |
return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED ); | |
/* set policy */ | |
policy = psa_key_policy_init(); | |
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_SIGN, | |
PSA_ALG_ECDSA(hash_alg) ); | |
if( PSA_SUCCESS != psa_set_key_policy( key, &policy ) ) | |
return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED ); | |
/* import private key in slot */ | |
if( PSA_SUCCESS != psa_import_key( key, key_type, d, d_len ) ) | |
return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED ); | |
/* remember slot number to be destroyed later by caller */ | |
*slot = key; | |
/* make PK context wrap the key slot */ | |
mbedtls_pk_free( pk ); | |
mbedtls_pk_init( pk ); | |
return( mbedtls_pk_setup_opaque( pk, key ) ); | |
#endif /* MBEDTLS_ECP_C */ | |
} | |
#endif /* MBEDTLS_USE_PSA_CRYPTO */ | |
#endif /* MBEDTLS_PK_C */ |