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/**
* \file psa_util_internal.h
*
* \brief Internal utility functions for use of PSA Crypto.
*/
/*
* Copyright The Mbed TLS Contributors
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
*/
#ifndef MBEDTLS_PSA_UTIL_INTERNAL_H
#define MBEDTLS_PSA_UTIL_INTERNAL_H
/* Include the public header so that users only need one include. */
#include "mbedtls/psa_util.h"
#include "psa/crypto.h"
#if defined(MBEDTLS_PSA_CRYPTO_CLIENT)
/*************************************************************************
* FFDH
************************************************************************/
#define MBEDTLS_PSA_MAX_FFDH_PUBKEY_LENGTH \
PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS)
/*************************************************************************
* ECC
************************************************************************/
#define MBEDTLS_PSA_MAX_EC_PUBKEY_LENGTH \
PSA_KEY_EXPORT_ECC_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
#define MBEDTLS_PSA_MAX_EC_KEY_PAIR_LENGTH \
PSA_KEY_EXPORT_ECC_KEY_PAIR_MAX_SIZE(PSA_VENDOR_ECC_MAX_CURVE_BITS)
/*************************************************************************
* Error translation
************************************************************************/
typedef struct {
/* Error codes used by PSA crypto are in -255..-128, fitting in 16 bits. */
int16_t psa_status;
/* Error codes used by Mbed TLS are in one of the ranges
* -127..-1 (low-level) or -32767..-4096 (high-level with a low-level
* code optionally added), fitting in 16 bits. */
int16_t mbedtls_error;
} mbedtls_error_pair_t;
#if defined(MBEDTLS_MD_LIGHT)
extern const mbedtls_error_pair_t psa_to_md_errors[4];
#endif
#if defined(MBEDTLS_BLOCK_CIPHER_SOME_PSA)
extern const mbedtls_error_pair_t psa_to_cipher_errors[4];
#endif
#if defined(MBEDTLS_LMS_C)
extern const mbedtls_error_pair_t psa_to_lms_errors[3];
#endif
#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
extern const mbedtls_error_pair_t psa_to_ssl_errors[7];
#endif
#if defined(PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY) || \
defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_BASIC)
extern const mbedtls_error_pair_t psa_to_pk_rsa_errors[8];
#endif
#if defined(MBEDTLS_USE_PSA_CRYPTO) && \
defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY)
extern const mbedtls_error_pair_t psa_to_pk_ecdsa_errors[7];
#endif
/* Generic fallback function for error translation,
* when the received state was not module-specific. */
int psa_generic_status_to_mbedtls(psa_status_t status);
/* This function iterates over provided local error translations,
* and if no match was found - calls the fallback error translation function. */
int psa_status_to_mbedtls(psa_status_t status,
const mbedtls_error_pair_t *local_translations,
size_t local_errors_num,
int (*fallback_f)(psa_status_t));
/* The second out of three-stage error handling functions of the pk module,
* acts as a fallback after RSA / ECDSA error translation, and if no match
* is found, it itself calls psa_generic_status_to_mbedtls. */
int psa_pk_status_to_mbedtls(psa_status_t status);
/* Utility macro to shorten the defines of error translator in modules. */
#define PSA_TO_MBEDTLS_ERR_LIST(status, error_list, fallback_f) \
psa_status_to_mbedtls(status, error_list, \
sizeof(error_list)/sizeof(error_list[0]), \
fallback_f)
#endif /* MBEDTLS_PSA_CRYPTO_CLIENT */
#endif /* MBEDTLS_PSA_UTIL_INTERNAL_H */
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