library/psa_crypto_driver_wrappers.c

/*
 *  Functions to delegate cryptographic operations to an available
 *  and appropriate accelerator.
 *  Warning: This file will be auto-generated in the future.
 */
/*  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.
 */

#include "common.h"
#include "psa_crypto_aead.h"
#include "psa_crypto_cipher.h"
#include "psa_crypto_core.h"
#include "psa_crypto_driver_wrappers.h"
#include "psa_crypto_hash.h"
#include "psa_crypto_mac.h"

#include "mbedtls/platform.h"

#if defined(MBEDTLS_PSA_CRYPTO_C)

#    if defined(MBEDTLS_PSA_CRYPTO_DRIVERS)

/* Include test driver definition when running tests */
#        if defined(PSA_CRYPTO_DRIVER_TEST)
#            ifndef PSA_CRYPTO_DRIVER_PRESENT
#                define PSA_CRYPTO_DRIVER_PRESENT
#            endif
#            ifndef PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
#                define PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT
#            endif
#            include "test/drivers/test_driver.h"
#        endif /* PSA_CRYPTO_DRIVER_TEST */

/* Repeat above block for each JSON-declared driver during autogeneration */
#    endif /* MBEDTLS_PSA_CRYPTO_DRIVERS */

/* Auto-generated values depending on which drivers are registered.
 * ID 0 is reserved for unallocated operations.
 * ID 1 is reserved for the Mbed TLS software driver. */
#    define PSA_CRYPTO_MBED_TLS_DRIVER_ID (1)

#    if defined(PSA_CRYPTO_DRIVER_TEST)
#        define PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID (2)
#        define PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID      (3)
#    endif /* PSA_CRYPTO_DRIVER_TEST */

/* Support the 'old' SE interface when asked to */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
/* PSA_CRYPTO_DRIVER_PRESENT is defined when either a new-style or old-style
 * SE driver is present, to avoid unused argument errors at compile time. */
#        ifndef PSA_CRYPTO_DRIVER_PRESENT
#            define PSA_CRYPTO_DRIVER_PRESENT
#        endif
#        include "psa_crypto_se.h"
#    endif

/* Start delegation functions */
psa_status_t
psa_driver_wrapper_sign_message(const psa_key_attributes_t *attributes,
                                const uint8_t *key_buffer,
                                size_t key_buffer_size,
                                psa_algorithm_t alg,
                                const uint8_t *input,
                                size_t input_length,
                                uint8_t *signature,
                                size_t signature_size,
                                size_t *signature_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_signature_sign_message(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, signature, signature_size, signature_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
            break;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_signature_sign_message(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, signature, signature_size, signature_length);
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
            break;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            break;
    }

    return (psa_sign_message_builtin(attributes, key_buffer, key_buffer_size,
                                     alg, input, input_length, signature,
                                     signature_size, signature_length));
}

psa_status_t
psa_driver_wrapper_verify_message(const psa_key_attributes_t *attributes,
                                  const uint8_t *key_buffer,
                                  size_t key_buffer_size,
                                  psa_algorithm_t alg,
                                  const uint8_t *input,
                                  size_t input_length,
                                  const uint8_t *signature,
                                  size_t signature_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_signature_verify_message(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, signature, signature_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
            break;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_signature_verify_message(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, signature, signature_length));
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
            break;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            break;
    }

    return (psa_verify_message_builtin(attributes, key_buffer, key_buffer_size,
                                       alg, input, input_length, signature,
                                       signature_length));
}

psa_status_t
psa_driver_wrapper_sign_hash(const psa_key_attributes_t *attributes,
                             const uint8_t *key_buffer,
                             size_t key_buffer_size,
                             psa_algorithm_t alg,
                             const uint8_t *hash,
                             size_t hash_length,
                             uint8_t *signature,
                             size_t signature_size,
                             size_t *signature_length)
{
    /* Try dynamically-registered SE interface first */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
    const psa_drv_se_t *drv;
    psa_drv_se_context_t *drv_context;

    if (psa_get_se_driver(attributes->core.lifetime, &drv, &drv_context)) {
        if (drv->asymmetric == NULL || drv->asymmetric->p_sign == NULL) {
            /* Key is defined in SE, but we have no way to exercise it */
            return PSA_ERROR_NOT_SUPPORTED;
        }
        return (drv->asymmetric->p_sign(
            drv_context, *((psa_key_slot_number_t *)key_buffer), alg, hash,
            hash_length, signature, signature_size, signature_length));
    }
#    endif /* PSA_CRYPTO_SE_C */

    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_signature_sign_hash(
                attributes, key_buffer, key_buffer_size, alg, hash, hash_length,
                signature, signature_size, signature_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
            /* Fell through, meaning no accelerator supports this operation */
            return (psa_sign_hash_builtin(
                attributes, key_buffer, key_buffer_size, alg, hash, hash_length,
                signature, signature_size, signature_length));

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_signature_sign_hash(
                attributes, key_buffer, key_buffer_size, alg, hash, hash_length,
                signature, signature_size, signature_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_verify_hash(const psa_key_attributes_t *attributes,
                               const uint8_t *key_buffer,
                               size_t key_buffer_size,
                               psa_algorithm_t alg,
                               const uint8_t *hash,
                               size_t hash_length,
                               const uint8_t *signature,
                               size_t signature_length)
{
    /* Try dynamically-registered SE interface first */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
    const psa_drv_se_t *drv;
    psa_drv_se_context_t *drv_context;

    if (psa_get_se_driver(attributes->core.lifetime, &drv, &drv_context)) {
        if (drv->asymmetric == NULL || drv->asymmetric->p_verify == NULL) {
            /* Key is defined in SE, but we have no way to exercise it */
            return PSA_ERROR_NOT_SUPPORTED;
        }
        return (drv->asymmetric->p_verify(
            drv_context, *((psa_key_slot_number_t *)key_buffer), alg, hash,
            hash_length, signature, signature_length));
    }
#    endif /* PSA_CRYPTO_SE_C */

    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_signature_verify_hash(
                attributes, key_buffer, key_buffer_size, alg, hash, hash_length,
                signature, signature_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

            return (psa_verify_hash_builtin(
                attributes, key_buffer, key_buffer_size, alg, hash, hash_length,
                signature, signature_length));

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_signature_verify_hash(
                attributes, key_buffer, key_buffer_size, alg, hash, hash_length,
                signature, signature_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

/** Get the key buffer size required to store the key material of a key
 *  associated with an opaque driver without storage.
 *
 * \param[in] attributes  The key attributes.
 * \param[out] key_buffer_size  Minimum buffer size to contain the key material
 *
 * \retval #PSA_SUCCESS
 *         The minimum size for a buffer to contain the key material has been
 *         returned successfully.
 * \retval #PSA_ERROR_INVALID_ARGUMENT
 *         The size in bits of the key is not valid.
 * \retval #PSA_ERROR_NOT_SUPPORTED
 *         The type and/or the size in bits of the key or the combination of
 *         the two is not supported.
 */
psa_status_t
psa_driver_wrapper_get_key_buffer_size(const psa_key_attributes_t *attributes,
                                       size_t *key_buffer_size)
{
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);
    psa_key_type_t key_type = attributes->core.type;
    size_t key_bits = attributes->core.bits;

    *key_buffer_size = 0;
    switch (location) {
#    if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
#        if defined(MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS)
            /* Emulate property 'builtin_key_size' */
            if (psa_key_id_is_builtin(MBEDTLS_SVC_KEY_ID_GET_KEY_ID(
                    psa_get_key_id(attributes)))) {
                *key_buffer_size = sizeof(psa_drv_slot_number_t);
                return PSA_SUCCESS;
            }
#        endif /* MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS */
            *key_buffer_size = mbedtls_test_size_function(key_type, key_bits);
            return ((*key_buffer_size != 0) ? PSA_SUCCESS :
                                              PSA_ERROR_NOT_SUPPORTED);
#    endif /* PSA_CRYPTO_DRIVER_TEST */

        default:
            (void)key_type;
            (void)key_bits;
            return PSA_ERROR_NOT_SUPPORTED;
    }
}

psa_status_t
psa_driver_wrapper_generate_key(const psa_key_attributes_t *attributes,
                                uint8_t *key_buffer,
                                size_t key_buffer_size,
                                size_t *key_buffer_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    /* Try dynamically-registered SE interface first */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
    const psa_drv_se_t *drv;
    psa_drv_se_context_t *drv_context;

    if (psa_get_se_driver(attributes->core.lifetime, &drv, &drv_context)) {
        size_t pubkey_length = 0; /* We don't support this feature yet */
        if (drv->key_management == NULL ||
            drv->key_management->p_generate == NULL) {
            /* Key is defined as being in SE, but we have no way to generate it
             */
            return PSA_ERROR_NOT_SUPPORTED;
        }
        return (drv->key_management->p_generate(
            drv_context, *((psa_key_slot_number_t *)key_buffer), attributes,
            NULL, 0, &pubkey_length));
    }
#    endif /* MBEDTLS_PSA_CRYPTO_SE_C */

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
            /* Transparent drivers are limited to generating asymmetric keys */
            if (PSA_KEY_TYPE_IS_ASYMMETRIC(attributes->core.type)) {
                /* Cycle through all known transparent accelerators */
#        if defined(PSA_CRYPTO_DRIVER_TEST)
                status = mbedtls_test_transparent_generate_key(
                    attributes, key_buffer, key_buffer_size, key_buffer_length);
                /* Declared with fallback == true */
                if (status != PSA_ERROR_NOT_SUPPORTED)
                    break;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
            }
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

            /* Software fallback */
            status = psa_generate_key_internal(
                attributes, key_buffer, key_buffer_size, key_buffer_length);
            break;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_generate_key(
                attributes, key_buffer, key_buffer_size, key_buffer_length);
            break;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

        default:
            /* Key is declared with a lifetime not known to us */
            status = PSA_ERROR_INVALID_ARGUMENT;
            break;
    }

    return status;
}

psa_status_t
psa_driver_wrapper_import_key(const psa_key_attributes_t *attributes,
                              const uint8_t *data,
                              size_t data_length,
                              uint8_t *key_buffer,
                              size_t key_buffer_size,
                              size_t *key_buffer_length,
                              size_t *bits)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(psa_get_key_lifetime(attributes));

    /* Try dynamically-registered SE interface first */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
    const psa_drv_se_t *drv;
    psa_drv_se_context_t *drv_context;

    if (psa_get_se_driver(attributes->core.lifetime, &drv, &drv_context)) {
        if (drv->key_management == NULL ||
            drv->key_management->p_import == NULL)
            return PSA_ERROR_NOT_SUPPORTED;

        /* The driver should set the number of key bits, however in
         * case it doesn't, we initialize bits to an invalid value. */
        *bits = PSA_MAX_KEY_BITS + 1;
        status = drv->key_management->p_import(
            drv_context, *((psa_key_slot_number_t *)key_buffer), attributes,
            data, data_length, bits);

        if (status != PSA_SUCCESS)
            return status;

        if ((*bits) > PSA_MAX_KEY_BITS)
            return PSA_ERROR_NOT_SUPPORTED;

        return PSA_SUCCESS;
    }
#    endif /* PSA_CRYPTO_SE_C */

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_import_key(
                attributes, data, data_length, key_buffer, key_buffer_size,
                key_buffer_length, bits);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
            /* Fell through, meaning no accelerator supports this operation */
            return (psa_import_key_into_slot(attributes, data, data_length,
                                             key_buffer, key_buffer_size,
                                             key_buffer_length, bits));

        default:
            /* Importing a key with external storage in not yet supported.
             * Return in error indicating that the lifetime is not valid. */
            (void)status;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_export_key(const psa_key_attributes_t *attributes,
                              const uint8_t *key_buffer,
                              size_t key_buffer_size,
                              uint8_t *data,
                              size_t data_size,
                              size_t *data_length)

{
    psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(psa_get_key_lifetime(attributes));

    /* Try dynamically-registered SE interface first */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
    const psa_drv_se_t *drv;
    psa_drv_se_context_t *drv_context;

    if (psa_get_se_driver(attributes->core.lifetime, &drv, &drv_context)) {
        if ((drv->key_management == NULL) ||
            (drv->key_management->p_export == NULL)) {
            return PSA_ERROR_NOT_SUPPORTED;
        }

        return (drv->key_management->p_export(
            drv_context, *((psa_key_slot_number_t *)key_buffer), data,
            data_size, data_length));
    }
#    endif /* PSA_CRYPTO_SE_C */

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            return (psa_export_key_internal(attributes, key_buffer,
                                            key_buffer_size, data, data_size,
                                            data_length));

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_export_key(attributes, key_buffer,
                                                   key_buffer_size, data,
                                                   data_size, data_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            return status;
    }
}

psa_status_t
psa_driver_wrapper_export_public_key(const psa_key_attributes_t *attributes,
                                     const uint8_t *key_buffer,
                                     size_t key_buffer_size,
                                     uint8_t *data,
                                     size_t data_size,
                                     size_t *data_length)

{
    psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(psa_get_key_lifetime(attributes));

    /* Try dynamically-registered SE interface first */
#    if defined(MBEDTLS_PSA_CRYPTO_SE_C)
    const psa_drv_se_t *drv;
    psa_drv_se_context_t *drv_context;

    if (psa_get_se_driver(attributes->core.lifetime, &drv, &drv_context)) {
        if ((drv->key_management == NULL) ||
            (drv->key_management->p_export_public == NULL)) {
            return PSA_ERROR_NOT_SUPPORTED;
        }

        return (drv->key_management->p_export_public(
            drv_context, *((psa_key_slot_number_t *)key_buffer), data,
            data_size, data_length));
    }
#    endif /* MBEDTLS_PSA_CRYPTO_SE_C */

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_export_public_key(
                attributes, key_buffer, key_buffer_size, data, data_size,
                data_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
            /* Fell through, meaning no accelerator supports this operation */
            return (psa_export_public_key_internal(attributes, key_buffer,
                                                   key_buffer_size, data,
                                                   data_size, data_length));

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_export_public_key(
                attributes, key_buffer, key_buffer_size, data, data_size,
                data_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            return status;
    }
}

psa_status_t
psa_driver_wrapper_get_builtin_key(psa_drv_slot_number_t slot_number,
                                   psa_key_attributes_t *attributes,
                                   uint8_t *key_buffer,
                                   size_t key_buffer_size,
                                   size_t *key_buffer_length)
{
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);
    switch (location) {
#    if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_get_builtin_key(
                slot_number, attributes, key_buffer, key_buffer_size,
                key_buffer_length));
#    endif /* PSA_CRYPTO_DRIVER_TEST */
        default:
            (void)slot_number;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)key_buffer_length;
            return PSA_ERROR_DOES_NOT_EXIST;
    }
}

/*
 * Cipher functions
 */
psa_status_t
psa_driver_wrapper_cipher_encrypt(const psa_key_attributes_t *attributes,
                                  const uint8_t *key_buffer,
                                  size_t key_buffer_size,
                                  psa_algorithm_t alg,
                                  const uint8_t *input,
                                  size_t input_length,
                                  uint8_t *output,
                                  size_t output_size,
                                  size_t *output_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_cipher_encrypt(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, output, output_size, output_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
            return (mbedtls_psa_cipher_encrypt(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, output, output_size, output_length));
#    else
            return PSA_ERROR_NOT_SUPPORTED;
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_cipher_encrypt(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, output, output_size, output_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            (void)input;
            (void)input_length;
            (void)output;
            (void)output_size;
            (void)output_length;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_cipher_decrypt(const psa_key_attributes_t *attributes,
                                  const uint8_t *key_buffer,
                                  size_t key_buffer_size,
                                  psa_algorithm_t alg,
                                  const uint8_t *input,
                                  size_t input_length,
                                  uint8_t *output,
                                  size_t output_size,
                                  size_t *output_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_cipher_decrypt(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, output, output_size, output_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
            return (mbedtls_psa_cipher_decrypt(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, output, output_size, output_length));
#    else
            return PSA_ERROR_NOT_SUPPORTED;
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            return (mbedtls_test_opaque_cipher_decrypt(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, output, output_size, output_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            (void)input;
            (void)input_length;
            (void)output;
            (void)output_size;
            (void)output_length;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_cipher_encrypt_setup(psa_cipher_operation_t *operation,
                                        const psa_key_attributes_t *attributes,
                                        const uint8_t *key_buffer,
                                        size_t key_buffer_size,
                                        psa_algorithm_t alg)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_cipher_encrypt_setup(
                &operation->ctx.transparent_test_driver_ctx, attributes,
                key_buffer, key_buffer_size, alg);
            /* Declared with fallback == true */
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
            /* Fell through, meaning no accelerator supports this operation */
            status = mbedtls_psa_cipher_encrypt_setup(
                &operation->ctx.mbedtls_ctx, attributes, key_buffer,
                key_buffer_size, alg);
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
            return PSA_ERROR_NOT_SUPPORTED;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_cipher_encrypt_setup(
                &operation->ctx.opaque_test_driver_ctx, attributes, key_buffer,
                key_buffer_size, alg);

            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID;

            return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_cipher_decrypt_setup(psa_cipher_operation_t *operation,
                                        const psa_key_attributes_t *attributes,
                                        const uint8_t *key_buffer,
                                        size_t key_buffer_size,
                                        psa_algorithm_t alg)
{
    psa_status_t status = PSA_ERROR_INVALID_ARGUMENT;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_cipher_decrypt_setup(
                &operation->ctx.transparent_test_driver_ctx, attributes,
                key_buffer, key_buffer_size, alg);
            /* Declared with fallback == true */
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
            /* Fell through, meaning no accelerator supports this operation */
            status = mbedtls_psa_cipher_decrypt_setup(
                &operation->ctx.mbedtls_ctx, attributes, key_buffer,
                key_buffer_size, alg);
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;

            return status;
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */
            return PSA_ERROR_NOT_SUPPORTED;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_cipher_decrypt_setup(
                &operation->ctx.opaque_test_driver_ctx, attributes, key_buffer,
                key_buffer_size, alg);

            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID;

            return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t psa_driver_wrapper_cipher_set_iv(psa_cipher_operation_t *operation,
                                              const uint8_t *iv,
                                              size_t iv_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_cipher_set_iv(&operation->ctx.mbedtls_ctx, iv,
                                              iv_length));
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_cipher_set_iv(
                &operation->ctx.transparent_test_driver_ctx, iv, iv_length));

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_cipher_set_iv(
                &operation->ctx.opaque_test_driver_ctx, iv, iv_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
    }

    (void)iv;
    (void)iv_length;

    return PSA_ERROR_INVALID_ARGUMENT;
}

psa_status_t psa_driver_wrapper_cipher_update(psa_cipher_operation_t *operation,
                                              const uint8_t *input,
                                              size_t input_length,
                                              uint8_t *output,
                                              size_t output_size,
                                              size_t *output_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_cipher_update(&operation->ctx.mbedtls_ctx,
                                              input, input_length, output,
                                              output_size, output_length));
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_cipher_update(
                &operation->ctx.transparent_test_driver_ctx, input,
                input_length, output, output_size, output_length));

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_cipher_update(
                &operation->ctx.opaque_test_driver_ctx, input, input_length,
                output, output_size, output_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
    }

    (void)input;
    (void)input_length;
    (void)output;
    (void)output_size;
    (void)output_length;

    return PSA_ERROR_INVALID_ARGUMENT;
}

psa_status_t psa_driver_wrapper_cipher_finish(psa_cipher_operation_t *operation,
                                              uint8_t *output,
                                              size_t output_size,
                                              size_t *output_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_cipher_finish(&operation->ctx.mbedtls_ctx,
                                              output, output_size,
                                              output_length));
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_cipher_finish(
                &operation->ctx.transparent_test_driver_ctx, output,
                output_size, output_length));

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_cipher_finish(
                &operation->ctx.opaque_test_driver_ctx, output, output_size,
                output_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
    }

    (void)output;
    (void)output_size;
    (void)output_length;

    return PSA_ERROR_INVALID_ARGUMENT;
}

psa_status_t psa_driver_wrapper_cipher_abort(psa_cipher_operation_t *operation)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;

    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_CIPHER)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return mbedtls_psa_cipher_abort(&operation->ctx.mbedtls_ctx);
#    endif /* MBEDTLS_PSA_BUILTIN_CIPHER */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            status = mbedtls_test_transparent_cipher_abort(
                &operation->ctx.transparent_test_driver_ctx);
            mbedtls_platform_zeroize(
                &operation->ctx.transparent_test_driver_ctx,
                sizeof(operation->ctx.transparent_test_driver_ctx));
            return status;

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            status = mbedtls_test_opaque_cipher_abort(
                &operation->ctx.opaque_test_driver_ctx);
            mbedtls_platform_zeroize(
                &operation->ctx.opaque_test_driver_ctx,
                sizeof(operation->ctx.opaque_test_driver_ctx));
            return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
    }

    (void)status;
    return PSA_ERROR_INVALID_ARGUMENT;
}

/*
 * Hashing functions
 */
psa_status_t psa_driver_wrapper_hash_compute(psa_algorithm_t alg,
                                             const uint8_t *input,
                                             size_t input_length,
                                             uint8_t *hash,
                                             size_t hash_size,
                                             size_t *hash_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;

    /* Try accelerators first */
#    if defined(PSA_CRYPTO_DRIVER_TEST)
    status = mbedtls_test_transparent_hash_compute(
        alg, input, input_length, hash, hash_size, hash_length);
    if (status != PSA_ERROR_NOT_SUPPORTED)
        return status;
#    endif

        /* If software fallback is compiled in, try fallback */
#    if defined(MBEDTLS_PSA_BUILTIN_HASH)
    status = mbedtls_psa_hash_compute(alg, input, input_length, hash, hash_size,
                                      hash_length);
    if (status != PSA_ERROR_NOT_SUPPORTED)
        return status;
#    endif
    (void)status;
    (void)alg;
    (void)input;
    (void)input_length;
    (void)hash;
    (void)hash_size;
    (void)hash_length;

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t psa_driver_wrapper_hash_setup(psa_hash_operation_t *operation,
                                           psa_algorithm_t alg)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;

    /* Try setup on accelerators first */
#    if defined(PSA_CRYPTO_DRIVER_TEST)
    status = mbedtls_test_transparent_hash_setup(
        &operation->ctx.test_driver_ctx, alg);
    if (status == PSA_SUCCESS)
        operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;

    if (status != PSA_ERROR_NOT_SUPPORTED)
        return status;
#    endif

        /* If software fallback is compiled in, try fallback */
#    if defined(MBEDTLS_PSA_BUILTIN_HASH)
    status = mbedtls_psa_hash_setup(&operation->ctx.mbedtls_ctx, alg);
    if (status == PSA_SUCCESS)
        operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;

    if (status != PSA_ERROR_NOT_SUPPORTED)
        return status;
#    endif
    /* Nothing left to try if we fall through here */
    (void)status;
    (void)operation;
    (void)alg;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t
psa_driver_wrapper_hash_clone(const psa_hash_operation_t *source_operation,
                              psa_hash_operation_t *target_operation)
{
    switch (source_operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_HASH)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            target_operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;
            return (mbedtls_psa_hash_clone(&source_operation->ctx.mbedtls_ctx,
                                           &target_operation->ctx.mbedtls_ctx));
#    endif
#    if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            target_operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;
            return (mbedtls_test_transparent_hash_clone(
                &source_operation->ctx.test_driver_ctx,
                &target_operation->ctx.test_driver_ctx));
#    endif
        default:
            (void)target_operation;
            return PSA_ERROR_BAD_STATE;
    }
}

psa_status_t psa_driver_wrapper_hash_update(psa_hash_operation_t *operation,
                                            const uint8_t *input,
                                            size_t input_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_HASH)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_hash_update(&operation->ctx.mbedtls_ctx, input,
                                            input_length));
#    endif
#    if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_hash_update(
                &operation->ctx.test_driver_ctx, input, input_length));
#    endif
        default:
            (void)input;
            (void)input_length;
            return PSA_ERROR_BAD_STATE;
    }
}

psa_status_t psa_driver_wrapper_hash_finish(psa_hash_operation_t *operation,
                                            uint8_t *hash,
                                            size_t hash_size,
                                            size_t *hash_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_HASH)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_hash_finish(&operation->ctx.mbedtls_ctx, hash,
                                            hash_size, hash_length));
#    endif
#    if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_hash_finish(
                &operation->ctx.test_driver_ctx, hash, hash_size, hash_length));
#    endif
        default:
            (void)hash;
            (void)hash_size;
            (void)hash_length;
            return PSA_ERROR_BAD_STATE;
    }
}

psa_status_t psa_driver_wrapper_hash_abort(psa_hash_operation_t *operation)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_HASH)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return mbedtls_psa_hash_abort(&operation->ctx.mbedtls_ctx);
#    endif
#    if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_hash_abort(
                &operation->ctx.test_driver_ctx));
#    endif
        default:
            return PSA_ERROR_BAD_STATE;
    }
}

psa_status_t
psa_driver_wrapper_aead_encrypt(const psa_key_attributes_t *attributes,
                                const uint8_t *key_buffer,
                                size_t key_buffer_size,
                                psa_algorithm_t alg,
                                const uint8_t *nonce,
                                size_t nonce_length,
                                const uint8_t *additional_data,
                                size_t additional_data_length,
                                const uint8_t *plaintext,
                                size_t plaintext_length,
                                uint8_t *ciphertext,
                                size_t ciphertext_size,
                                size_t *ciphertext_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_aead_encrypt(
                attributes, key_buffer, key_buffer_size, alg, nonce,
                nonce_length, additional_data, additional_data_length,
                plaintext, plaintext_length, ciphertext, ciphertext_size,
                ciphertext_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

            /* Fell through, meaning no accelerator supports this operation */
            return (mbedtls_psa_aead_encrypt(
                attributes, key_buffer, key_buffer_size, alg, nonce,
                nonce_length, additional_data, additional_data_length,
                plaintext, plaintext_length, ciphertext, ciphertext_size,
                ciphertext_length));

            /* Add cases for opaque driver here */

        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_aead_decrypt(const psa_key_attributes_t *attributes,
                                const uint8_t *key_buffer,
                                size_t key_buffer_size,
                                psa_algorithm_t alg,
                                const uint8_t *nonce,
                                size_t nonce_length,
                                const uint8_t *additional_data,
                                size_t additional_data_length,
                                const uint8_t *ciphertext,
                                size_t ciphertext_length,
                                uint8_t *plaintext,
                                size_t plaintext_size,
                                size_t *plaintext_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_aead_decrypt(
                attributes, key_buffer, key_buffer_size, alg, nonce,
                nonce_length, additional_data, additional_data_length,
                ciphertext, ciphertext_length, plaintext, plaintext_size,
                plaintext_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */

            /* Fell through, meaning no accelerator supports this operation */
            return (mbedtls_psa_aead_decrypt(
                attributes, key_buffer, key_buffer_size, alg, nonce,
                nonce_length, additional_data, additional_data_length,
                ciphertext, ciphertext_length, plaintext, plaintext_size,
                plaintext_length));

            /* Add cases for opaque driver here */

        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

/*
 * MAC functions
 */
psa_status_t
psa_driver_wrapper_mac_compute(const psa_key_attributes_t *attributes,
                               const uint8_t *key_buffer,
                               size_t key_buffer_size,
                               psa_algorithm_t alg,
                               const uint8_t *input,
                               size_t input_length,
                               uint8_t *mac,
                               size_t mac_size,
                               size_t *mac_length)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_mac_compute(
                attributes, key_buffer, key_buffer_size, alg, input,
                input_length, mac, mac_size, mac_length);
            /* Declared with fallback == true */
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
            /* Fell through, meaning no accelerator supports this operation */
            status = mbedtls_psa_mac_compute(attributes, key_buffer,
                                             key_buffer_size, alg, input,
                                             input_length, mac, mac_size,
                                             mac_length);
            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */
            return PSA_ERROR_NOT_SUPPORTED;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_mac_compute(attributes, key_buffer,
                                                     key_buffer_size, alg,
                                                     input, input_length, mac,
                                                     mac_size, mac_length);
            return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            (void)input;
            (void)input_length;
            (void)mac;
            (void)mac_size;
            (void)mac_length;
            (void)status;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_mac_sign_setup(psa_mac_operation_t *operation,
                                  const psa_key_attributes_t *attributes,
                                  const uint8_t *key_buffer,
                                  size_t key_buffer_size,
                                  psa_algorithm_t alg)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_mac_sign_setup(
                &operation->ctx.transparent_test_driver_ctx, attributes,
                key_buffer, key_buffer_size, alg);
            /* Declared with fallback == true */
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
            /* Fell through, meaning no accelerator supports this operation */
            status = mbedtls_psa_mac_sign_setup(&operation->ctx.mbedtls_ctx,
                                                attributes, key_buffer,
                                                key_buffer_size, alg);
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */
            return PSA_ERROR_NOT_SUPPORTED;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_mac_sign_setup(
                &operation->ctx.opaque_test_driver_ctx, attributes, key_buffer,
                key_buffer_size, alg);

            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID;

            return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_mac_verify_setup(psa_mac_operation_t *operation,
                                    const psa_key_attributes_t *attributes,
                                    const uint8_t *key_buffer,
                                    size_t key_buffer_size,
                                    psa_algorithm_t alg)
{
    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
    psa_key_location_t location =
        PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime);

    switch (location) {
        case PSA_KEY_LOCATION_LOCAL_STORAGE:
            /* Key is stored in the slot in export representation, so
             * cycle through all known transparent accelerators */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
            status = mbedtls_test_transparent_mac_verify_setup(
                &operation->ctx.transparent_test_driver_ctx, attributes,
                key_buffer, key_buffer_size, alg);
            /* Declared with fallback == true */
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
            /* Fell through, meaning no accelerator supports this operation */
            status = mbedtls_psa_mac_verify_setup(&operation->ctx.mbedtls_ctx,
                                                  attributes, key_buffer,
                                                  key_buffer_size, alg);
            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_MBED_TLS_DRIVER_ID;

            if (status != PSA_ERROR_NOT_SUPPORTED)
                return status;
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */
            return PSA_ERROR_NOT_SUPPORTED;

            /* Add cases for opaque driver here */
#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TEST_DRIVER_LOCATION:
            status = mbedtls_test_opaque_mac_verify_setup(
                &operation->ctx.opaque_test_driver_ctx, attributes, key_buffer,
                key_buffer_size, alg);

            if (status == PSA_SUCCESS)
                operation->id = PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID;

            return status;
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            /* Key is declared with a lifetime not known to us */
            (void)status;
            (void)key_buffer;
            (void)key_buffer_size;
            (void)alg;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t psa_driver_wrapper_mac_update(psa_mac_operation_t *operation,
                                           const uint8_t *input,
                                           size_t input_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_mac_update(&operation->ctx.mbedtls_ctx, input,
                                           input_length));
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_mac_update(
                &operation->ctx.transparent_test_driver_ctx, input,
                input_length));

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_mac_update(
                &operation->ctx.opaque_test_driver_ctx, input, input_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            (void)input;
            (void)input_length;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t psa_driver_wrapper_mac_sign_finish(psa_mac_operation_t *operation,
                                                uint8_t *mac,
                                                size_t mac_size,
                                                size_t *mac_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_mac_sign_finish(&operation->ctx.mbedtls_ctx,
                                                mac, mac_size, mac_length));
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_mac_sign_finish(
                &operation->ctx.transparent_test_driver_ctx, mac, mac_size,
                mac_length));

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_mac_sign_finish(
                &operation->ctx.opaque_test_driver_ctx, mac, mac_size,
                mac_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            (void)mac;
            (void)mac_size;
            (void)mac_length;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t
psa_driver_wrapper_mac_verify_finish(psa_mac_operation_t *operation,
                                     const uint8_t *mac,
                                     size_t mac_length)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return (mbedtls_psa_mac_verify_finish(&operation->ctx.mbedtls_ctx,
                                                  mac, mac_length));
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_mac_verify_finish(
                &operation->ctx.transparent_test_driver_ctx, mac, mac_length));

        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_mac_verify_finish(
                &operation->ctx.opaque_test_driver_ctx, mac, mac_length));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            (void)mac;
            (void)mac_length;
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

psa_status_t psa_driver_wrapper_mac_abort(psa_mac_operation_t *operation)
{
    switch (operation->id) {
#    if defined(MBEDTLS_PSA_BUILTIN_MAC)
        case PSA_CRYPTO_MBED_TLS_DRIVER_ID:
            return mbedtls_psa_mac_abort(&operation->ctx.mbedtls_ctx);
#    endif /* MBEDTLS_PSA_BUILTIN_MAC */

#    if defined(PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT)
#        if defined(PSA_CRYPTO_DRIVER_TEST)
        case PSA_CRYPTO_TRANSPARENT_TEST_DRIVER_ID:
            return (mbedtls_test_transparent_mac_abort(
                &operation->ctx.transparent_test_driver_ctx));
        case PSA_CRYPTO_OPAQUE_TEST_DRIVER_ID:
            return (mbedtls_test_opaque_mac_abort(
                &operation->ctx.opaque_test_driver_ctx));
#        endif /* PSA_CRYPTO_DRIVER_TEST */
#    endif /* PSA_CRYPTO_ACCELERATOR_DRIVER_PRESENT */
        default:
            return PSA_ERROR_INVALID_ARGUMENT;
    }
}

#endif /* MBEDTLS_PSA_CRYPTO_C */