482 lines
16 KiB
C
482 lines
16 KiB
C
/**
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* \file psa_util.h
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*
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* \brief Utility functions for the use of the PSA Crypto library.
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*
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* \warning This function is not part of the public API and may
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* change at any time.
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*/
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/*
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* Copyright (C) 2006-2018, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_PSA_UTIL_H
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#define MBEDTLS_PSA_UTIL_H
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#if !defined(MBEDTLS_CONFIG_FILE)
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#include "config.h"
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#else
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#include MBEDTLS_CONFIG_FILE
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#endif
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#if defined(MBEDTLS_USE_PSA_CRYPTO)
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#include "psa/crypto.h"
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#include "ecp.h"
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#include "md.h"
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#include "pk.h"
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#include "oid.h"
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#include <string.h>
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/* Translations for symmetric crypto. */
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static inline psa_key_type_t mbedtls_psa_translate_cipher_type(
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mbedtls_cipher_type_t cipher )
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{
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switch( cipher )
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{
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case MBEDTLS_CIPHER_AES_128_CCM:
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case MBEDTLS_CIPHER_AES_192_CCM:
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case MBEDTLS_CIPHER_AES_256_CCM:
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case MBEDTLS_CIPHER_AES_128_GCM:
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case MBEDTLS_CIPHER_AES_192_GCM:
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case MBEDTLS_CIPHER_AES_256_GCM:
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case MBEDTLS_CIPHER_AES_128_CBC:
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case MBEDTLS_CIPHER_AES_192_CBC:
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case MBEDTLS_CIPHER_AES_256_CBC:
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return( PSA_KEY_TYPE_AES );
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/* ARIA not yet supported in PSA. */
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/* case MBEDTLS_CIPHER_ARIA_128_CCM:
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case MBEDTLS_CIPHER_ARIA_192_CCM:
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case MBEDTLS_CIPHER_ARIA_256_CCM:
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case MBEDTLS_CIPHER_ARIA_128_GCM:
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case MBEDTLS_CIPHER_ARIA_192_GCM:
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case MBEDTLS_CIPHER_ARIA_256_GCM:
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case MBEDTLS_CIPHER_ARIA_128_CBC:
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case MBEDTLS_CIPHER_ARIA_192_CBC:
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case MBEDTLS_CIPHER_ARIA_256_CBC:
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return( PSA_KEY_TYPE_ARIA ); */
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default:
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return( 0 );
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}
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}
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static inline psa_algorithm_t mbedtls_psa_translate_cipher_mode(
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mbedtls_cipher_mode_t mode, size_t taglen )
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{
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switch( mode )
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{
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case MBEDTLS_MODE_GCM:
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return( PSA_ALG_AEAD_WITH_TAG_LENGTH( PSA_ALG_GCM, taglen ) );
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case MBEDTLS_MODE_CCM:
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return( PSA_ALG_AEAD_WITH_TAG_LENGTH( PSA_ALG_CCM, taglen ) );
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case MBEDTLS_MODE_CBC:
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if( taglen == 0 )
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return( PSA_ALG_CBC_NO_PADDING );
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/* Intentional fallthrough for taglen != 0 */
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/* fallthrough */
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default:
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return( 0 );
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}
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}
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static inline psa_key_usage_t mbedtls_psa_translate_cipher_operation(
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mbedtls_operation_t op )
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{
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switch( op )
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{
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case MBEDTLS_ENCRYPT:
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return( PSA_KEY_USAGE_ENCRYPT );
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case MBEDTLS_DECRYPT:
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return( PSA_KEY_USAGE_DECRYPT );
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default:
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return( 0 );
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}
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}
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/* Translations for hashing. */
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static inline psa_algorithm_t mbedtls_psa_translate_md( mbedtls_md_type_t md_alg )
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{
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switch( md_alg )
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{
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#if defined(MBEDTLS_MD2_C)
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case MBEDTLS_MD_MD2:
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return( PSA_ALG_MD2 );
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#endif
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#if defined(MBEDTLS_MD4_C)
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case MBEDTLS_MD_MD4:
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return( PSA_ALG_MD4 );
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#endif
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#if defined(MBEDTLS_MD5_C)
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case MBEDTLS_MD_MD5:
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return( PSA_ALG_MD5 );
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#endif
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#if defined(MBEDTLS_SHA1_C)
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case MBEDTLS_MD_SHA1:
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return( PSA_ALG_SHA_1 );
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#endif
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#if defined(MBEDTLS_SHA256_C)
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case MBEDTLS_MD_SHA224:
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return( PSA_ALG_SHA_224 );
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case MBEDTLS_MD_SHA256:
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return( PSA_ALG_SHA_256 );
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#endif
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#if defined(MBEDTLS_SHA512_C)
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case MBEDTLS_MD_SHA384:
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return( PSA_ALG_SHA_384 );
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case MBEDTLS_MD_SHA512:
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return( PSA_ALG_SHA_512 );
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#endif
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#if defined(MBEDTLS_RIPEMD160_C)
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case MBEDTLS_MD_RIPEMD160:
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return( PSA_ALG_RIPEMD160 );
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#endif
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case MBEDTLS_MD_NONE: /* Intentional fallthrough */
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default:
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return( 0 );
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}
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}
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/* Translations for ECC. */
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static inline int mbedtls_psa_get_ecc_oid_from_id(
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psa_ecc_curve_t curve, char const **oid, size_t *oid_len )
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{
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switch( curve )
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{
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#if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
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case PSA_ECC_CURVE_SECP192R1:
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*oid = MBEDTLS_OID_EC_GRP_SECP192R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP192R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP192R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
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case PSA_ECC_CURVE_SECP224R1:
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*oid = MBEDTLS_OID_EC_GRP_SECP224R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP224R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
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case PSA_ECC_CURVE_SECP256R1:
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*oid = MBEDTLS_OID_EC_GRP_SECP256R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP256R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
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case PSA_ECC_CURVE_SECP384R1:
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*oid = MBEDTLS_OID_EC_GRP_SECP384R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP384R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
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case PSA_ECC_CURVE_SECP521R1:
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*oid = MBEDTLS_OID_EC_GRP_SECP521R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP521R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP521R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
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case PSA_ECC_CURVE_SECP192K1:
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*oid = MBEDTLS_OID_EC_GRP_SECP192K1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP192K1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
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case PSA_ECC_CURVE_SECP224K1:
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*oid = MBEDTLS_OID_EC_GRP_SECP224K1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP224K1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
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case PSA_ECC_CURVE_SECP256K1:
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*oid = MBEDTLS_OID_EC_GRP_SECP256K1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_SECP256K1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
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case PSA_ECC_CURVE_BRAINPOOL_P256R1:
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*oid = MBEDTLS_OID_EC_GRP_BP256R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_BP256R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_BP256R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
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case PSA_ECC_CURVE_BRAINPOOL_P384R1:
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*oid = MBEDTLS_OID_EC_GRP_BP384R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_BP384R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_BP384R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
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case PSA_ECC_CURVE_BRAINPOOL_P512R1:
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*oid = MBEDTLS_OID_EC_GRP_BP512R1;
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*oid_len = MBEDTLS_OID_SIZE( MBEDTLS_OID_EC_GRP_BP512R1 );
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return( 0 );
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#endif /* MBEDTLS_ECP_DP_BP512R1_ENABLED */
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}
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return( -1 );
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}
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH 1
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#if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 192 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 192 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP192R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 224 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 224 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP224R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 256 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 256 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP256R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 384 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 384 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 521 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 521 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP521R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 192 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 192 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 224 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 224 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 256 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 256 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 256 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 256 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_BP256R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 384 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 384 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_BP384R1_ENABLED */
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#if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
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#if MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH < ( 2 * ( ( 512 + 7 ) / 8 ) + 1 )
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#undef MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH
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#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH ( 2 * ( ( 512 + 7 ) / 8 ) + 1 )
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#endif
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#endif /* MBEDTLS_ECP_DP_BP512R1_ENABLED */
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static inline psa_ecc_curve_t mbedtls_psa_translate_ecc_group( mbedtls_ecp_group_id grpid )
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{
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switch( grpid )
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{
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#if defined(MBEDTLS_ECP_DP_SECP192R1_ENABLED)
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case MBEDTLS_ECP_DP_SECP192R1:
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return( PSA_ECC_CURVE_SECP192R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP224R1_ENABLED)
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case MBEDTLS_ECP_DP_SECP224R1:
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return( PSA_ECC_CURVE_SECP224R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
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case MBEDTLS_ECP_DP_SECP256R1:
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return( PSA_ECC_CURVE_SECP256R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
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case MBEDTLS_ECP_DP_SECP384R1:
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return( PSA_ECC_CURVE_SECP384R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
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case MBEDTLS_ECP_DP_SECP521R1:
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return( PSA_ECC_CURVE_SECP521R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_BP256R1_ENABLED)
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case MBEDTLS_ECP_DP_BP256R1:
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return( PSA_ECC_CURVE_BRAINPOOL_P256R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_BP384R1_ENABLED)
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case MBEDTLS_ECP_DP_BP384R1:
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return( PSA_ECC_CURVE_BRAINPOOL_P384R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_BP512R1_ENABLED)
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case MBEDTLS_ECP_DP_BP512R1:
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return( PSA_ECC_CURVE_BRAINPOOL_P512R1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_CURVE25519_ENABLED)
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case MBEDTLS_ECP_DP_CURVE25519:
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return( PSA_ECC_CURVE_CURVE25519 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
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case MBEDTLS_ECP_DP_SECP192K1:
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return( PSA_ECC_CURVE_SECP192K1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
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case MBEDTLS_ECP_DP_SECP224K1:
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return( PSA_ECC_CURVE_SECP224K1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
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case MBEDTLS_ECP_DP_SECP256K1:
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return( PSA_ECC_CURVE_SECP256K1 );
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#endif
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#if defined(MBEDTLS_ECP_DP_CURVE448_ENABLED)
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case MBEDTLS_ECP_DP_CURVE448:
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return( PSA_ECC_CURVE_CURVE448 );
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#endif
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default:
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return( 0 );
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}
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}
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#define MBEDTLS_PSA_ECC_KEY_BITS_OF_CURVE( curve ) \
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( curve == PSA_ECC_CURVE_SECP192R1 ? 192 : \
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curve == PSA_ECC_CURVE_SECP224R1 ? 224 : \
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curve == PSA_ECC_CURVE_SECP256R1 ? 256 : \
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curve == PSA_ECC_CURVE_SECP384R1 ? 384 : \
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curve == PSA_ECC_CURVE_SECP521R1 ? 521 : \
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curve == PSA_ECC_CURVE_SECP192K1 ? 192 : \
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curve == PSA_ECC_CURVE_SECP224K1 ? 224 : \
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curve == PSA_ECC_CURVE_SECP256K1 ? 256 : \
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curve == PSA_ECC_CURVE_BRAINPOOL_P256R1 ? 256 : \
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curve == PSA_ECC_CURVE_BRAINPOOL_P384R1 ? 384 : \
|
|
curve == PSA_ECC_CURVE_BRAINPOOL_P512R1 ? 512 : \
|
|
0 )
|
|
|
|
#define MBEDTLS_PSA_ECC_KEY_BYTES_OF_CURVE( curve ) \
|
|
( ( MBEDTLS_PSA_ECC_KEY_BITS_OF_CURVE( curve ) + 7 ) / 8 )
|
|
|
|
/* Translations for PK layer */
|
|
|
|
static inline int mbedtls_psa_err_translate_pk( psa_status_t status )
|
|
{
|
|
switch( status )
|
|
{
|
|
case PSA_SUCCESS:
|
|
return( 0 );
|
|
case PSA_ERROR_NOT_SUPPORTED:
|
|
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
|
|
case PSA_ERROR_INSUFFICIENT_MEMORY:
|
|
return( MBEDTLS_ERR_PK_ALLOC_FAILED );
|
|
case PSA_ERROR_INSUFFICIENT_ENTROPY:
|
|
return( MBEDTLS_ERR_ECP_RANDOM_FAILED );
|
|
case PSA_ERROR_BAD_STATE:
|
|
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
|
|
/* All other failures */
|
|
case PSA_ERROR_COMMUNICATION_FAILURE:
|
|
case PSA_ERROR_HARDWARE_FAILURE:
|
|
case PSA_ERROR_TAMPERING_DETECTED:
|
|
return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED );
|
|
default: /* We return the same as for the 'other failures',
|
|
* but list them separately nonetheless to indicate
|
|
* which failure conditions we have considered. */
|
|
return( MBEDTLS_ERR_PK_HW_ACCEL_FAILED );
|
|
}
|
|
}
|
|
|
|
/* Translations for ECC */
|
|
|
|
/* This function transforms an ECC group identifier from
|
|
* https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#tls-parameters-8
|
|
* into a PSA ECC group identifier. */
|
|
static inline psa_ecc_curve_t mbedtls_psa_parse_tls_ecc_group(
|
|
uint16_t tls_ecc_grp_reg_id )
|
|
{
|
|
/* The PSA identifiers are currently aligned with those from
|
|
* the TLS Supported Groups registry, so no conversion is necessary. */
|
|
return( (psa_ecc_curve_t) tls_ecc_grp_reg_id );
|
|
}
|
|
|
|
/* This function takes a buffer holding an EC public key
|
|
* exported through psa_export_public_key(), and converts
|
|
* it into an ECPoint structure to be put into a ClientKeyExchange
|
|
* message in an ECDHE exchange.
|
|
*
|
|
* Both the present and the foreseeable future format of EC public keys
|
|
* used by PSA have the ECPoint structure contained in the exported key
|
|
* as a subbuffer, and the function merely selects this subbuffer instead
|
|
* of making a copy.
|
|
*/
|
|
static inline int mbedtls_psa_tls_psa_ec_to_ecpoint( unsigned char *src,
|
|
size_t srclen,
|
|
unsigned char **dst,
|
|
size_t *dstlen )
|
|
{
|
|
*dst = src;
|
|
*dstlen = srclen;
|
|
return( 0 );
|
|
}
|
|
|
|
/* This function takes a buffer holding an ECPoint structure
|
|
* (as contained in a TLS ServerKeyExchange message for ECDHE
|
|
* exchanges) and converts it into a format that the PSA key
|
|
* agreement API understands.
|
|
*/
|
|
static inline int mbedtls_psa_tls_ecpoint_to_psa_ec( psa_ecc_curve_t curve,
|
|
unsigned char const *src,
|
|
size_t srclen,
|
|
unsigned char *dst,
|
|
size_t dstlen,
|
|
size_t *olen )
|
|
{
|
|
((void) curve);
|
|
|
|
if( srclen > dstlen )
|
|
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
|
|
|
|
memcpy( dst, src, srclen );
|
|
*olen = srclen;
|
|
return( 0 );
|
|
}
|
|
|
|
#endif /* MBEDTLS_USE_PSA_CRYPTO */
|
|
|
|
#endif /* MBEDTLS_PSA_UTIL_H */
|