tests/src/drivers/test_driver_cipher.c

/*
 * Test driver for cipher functions.
 * Currently only supports multi-part operations using AES-CTR.
 */
/*  Copyright The Mbed TLS Contributors
 *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
 */

#include <test/helpers.h>

#if defined(PSA_CRYPTO_DRIVER_TEST)
#include "psa/crypto.h"
#include "psa_crypto_cipher.h"
#include "psa_crypto_core.h"
#include "mbedtls/cipher.h"

#include "test/drivers/cipher.h"

#include "test/random.h"

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1)
#include "libtestdriver1/library/psa_crypto_cipher.h"
#endif

#include <string.h>

mbedtls_test_driver_cipher_hooks_t mbedtls_test_driver_cipher_hooks =
    MBEDTLS_TEST_DRIVER_CIPHER_INIT;

psa_status_t mbedtls_test_transparent_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 *iv,
    size_t iv_length,
    const uint8_t *input,
    size_t input_length,
    uint8_t *output,
    size_t output_size,
    size_t *output_length)
{
    mbedtls_test_driver_cipher_hooks.hits++;
    mbedtls_test_driver_cipher_hooks.cipher_encrypt_hits++;

    if (mbedtls_test_driver_cipher_hooks.forced_output != NULL) {
        if (output_size < mbedtls_test_driver_cipher_hooks.forced_output_length) {
            return PSA_ERROR_BUFFER_TOO_SMALL;
        }

        memcpy(output,
               mbedtls_test_driver_cipher_hooks.forced_output,
               mbedtls_test_driver_cipher_hooks.forced_output_length);
        *output_length = mbedtls_test_driver_cipher_hooks.forced_output_length;

        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_encrypt(
        (const libtestdriver1_psa_key_attributes_t *) attributes,
        key_buffer, key_buffer_size,
        alg, iv, iv_length, input, input_length,
        output, output_size, output_length);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    return mbedtls_psa_cipher_encrypt(
        attributes, key_buffer, key_buffer_size,
        alg, iv, iv_length, input, input_length,
        output, output_size, output_length);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_transparent_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)
{
    mbedtls_test_driver_cipher_hooks.hits++;

    if (mbedtls_test_driver_cipher_hooks.forced_output != NULL) {
        if (output_size < mbedtls_test_driver_cipher_hooks.forced_output_length) {
            return PSA_ERROR_BUFFER_TOO_SMALL;
        }

        memcpy(output,
               mbedtls_test_driver_cipher_hooks.forced_output,
               mbedtls_test_driver_cipher_hooks.forced_output_length);
        *output_length = mbedtls_test_driver_cipher_hooks.forced_output_length;

        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_decrypt(
        (const libtestdriver1_psa_key_attributes_t *) attributes,
        key_buffer, key_buffer_size,
        alg, input, input_length,
        output, output_size, output_length);
#elif 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);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_transparent_cipher_encrypt_setup(
    mbedtls_transparent_test_driver_cipher_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key, size_t key_length,
    psa_algorithm_t alg)
{
    mbedtls_test_driver_cipher_hooks.hits++;

    /* Wiping the entire struct here, instead of member-by-member. This is
     * useful for the test suite, since it gives a chance of catching memory
     * corruption errors should the core not have allocated (enough) memory for
     * our context struct. */
    memset(operation, 0, sizeof(*operation));

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_encrypt_setup(
        operation,
        (const libtestdriver1_psa_key_attributes_t *) attributes,
        key, key_length, alg);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    return mbedtls_psa_cipher_encrypt_setup(
        operation, attributes, key, key_length, alg);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_transparent_cipher_decrypt_setup(
    mbedtls_transparent_test_driver_cipher_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key, size_t key_length,
    psa_algorithm_t alg)
{
    mbedtls_test_driver_cipher_hooks.hits++;

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_decrypt_setup(
        operation,
        (const libtestdriver1_psa_key_attributes_t *) attributes,
        key, key_length, alg);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    return mbedtls_psa_cipher_decrypt_setup(
        operation, attributes, key, key_length, alg);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_transparent_cipher_abort(
    mbedtls_transparent_test_driver_cipher_operation_t *operation)
{
    mbedtls_test_driver_cipher_hooks.hits++;

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    libtestdriver1_mbedtls_psa_cipher_abort(operation);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    mbedtls_psa_cipher_abort(operation);
#endif

    /* Wiping the entire struct here, instead of member-by-member. This is
     * useful for the test suite, since it gives a chance of catching memory
     * corruption errors should the core not have allocated (enough) memory for
     * our context struct. */
    memset(operation, 0, sizeof(*operation));

    return mbedtls_test_driver_cipher_hooks.forced_status;
}

psa_status_t mbedtls_test_transparent_cipher_set_iv(
    mbedtls_transparent_test_driver_cipher_operation_t *operation,
    const uint8_t *iv,
    size_t iv_length)
{
    mbedtls_test_driver_cipher_hooks.hits++;

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_set_iv(
        operation, iv, iv_length);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    return mbedtls_psa_cipher_set_iv(operation, iv, iv_length);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_transparent_cipher_update(
    mbedtls_transparent_test_driver_cipher_operation_t *operation,
    const uint8_t *input,
    size_t input_length,
    uint8_t *output,
    size_t output_size,
    size_t *output_length)
{
    mbedtls_test_driver_cipher_hooks.hits++;

    if (mbedtls_test_driver_cipher_hooks.forced_output != NULL) {
        if (output_size < mbedtls_test_driver_cipher_hooks.forced_output_length) {
            return PSA_ERROR_BUFFER_TOO_SMALL;
        }

        memcpy(output,
               mbedtls_test_driver_cipher_hooks.forced_output,
               mbedtls_test_driver_cipher_hooks.forced_output_length);
        *output_length = mbedtls_test_driver_cipher_hooks.forced_output_length;

        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        ++mbedtls_test_driver_cipher_hooks.cipher_update_forced_status_hits;
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_update(
        operation, input, input_length,
        output, output_size, output_length);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    return mbedtls_psa_cipher_update(
        operation, input, input_length,
        output, output_size, output_length);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_transparent_cipher_finish(
    mbedtls_transparent_test_driver_cipher_operation_t *operation,
    uint8_t *output,
    size_t output_size,
    size_t *output_length)
{
    mbedtls_test_driver_cipher_hooks.hits++;

    if (mbedtls_test_driver_cipher_hooks.forced_output != NULL) {
        if (output_size < mbedtls_test_driver_cipher_hooks.forced_output_length) {
            return PSA_ERROR_BUFFER_TOO_SMALL;
        }

        memcpy(output,
               mbedtls_test_driver_cipher_hooks.forced_output,
               mbedtls_test_driver_cipher_hooks.forced_output_length);
        *output_length = mbedtls_test_driver_cipher_hooks.forced_output_length;

        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

    if (mbedtls_test_driver_cipher_hooks.forced_status != PSA_SUCCESS) {
        return mbedtls_test_driver_cipher_hooks.forced_status;
    }

#if defined(MBEDTLS_TEST_LIBTESTDRIVER1) && \
    defined(LIBTESTDRIVER1_MBEDTLS_PSA_BUILTIN_CIPHER)
    return libtestdriver1_mbedtls_psa_cipher_finish(
        operation, output, output_size, output_length);
#elif defined(MBEDTLS_PSA_BUILTIN_CIPHER)
    return mbedtls_psa_cipher_finish(
        operation, output, output_size, output_length);
#endif

    return PSA_ERROR_NOT_SUPPORTED;
}

/*
 * opaque versions, to do
 */
psa_status_t mbedtls_test_opaque_cipher_encrypt(
    const psa_key_attributes_t *attributes,
    const uint8_t *key, size_t key_length,
    psa_algorithm_t alg,
    const uint8_t *iv, size_t iv_length,
    const uint8_t *input, size_t input_length,
    uint8_t *output, size_t output_size, size_t *output_length)
{
    (void) attributes;
    (void) key;
    (void) key_length;
    (void) alg;
    (void) iv;
    (void) iv_length;
    (void) input;
    (void) input_length;
    (void) output;
    (void) output_size;
    (void) output_length;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_decrypt(
    const psa_key_attributes_t *attributes,
    const uint8_t *key, size_t key_length,
    psa_algorithm_t alg,
    const uint8_t *input, size_t input_length,
    uint8_t *output, size_t output_size, size_t *output_length)
{
    (void) attributes;
    (void) key;
    (void) key_length;
    (void) alg;
    (void) input;
    (void) input_length;
    (void) output;
    (void) output_size;
    (void) output_length;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_encrypt_setup(
    mbedtls_opaque_test_driver_cipher_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key, size_t key_length,
    psa_algorithm_t alg)
{
    (void) operation;
    (void) attributes;
    (void) key;
    (void) key_length;
    (void) alg;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_decrypt_setup(
    mbedtls_opaque_test_driver_cipher_operation_t *operation,
    const psa_key_attributes_t *attributes,
    const uint8_t *key, size_t key_length,
    psa_algorithm_t alg)
{
    (void) operation;
    (void) attributes;
    (void) key;
    (void) key_length;
    (void) alg;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_abort(
    mbedtls_opaque_test_driver_cipher_operation_t *operation)
{
    (void) operation;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_set_iv(
    mbedtls_opaque_test_driver_cipher_operation_t *operation,
    const uint8_t *iv,
    size_t iv_length)
{
    (void) operation;
    (void) iv;
    (void) iv_length;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_update(
    mbedtls_opaque_test_driver_cipher_operation_t *operation,
    const uint8_t *input,
    size_t input_length,
    uint8_t *output,
    size_t output_size,
    size_t *output_length)
{
    (void) operation;
    (void) input;
    (void) input_length;
    (void) output;
    (void) output_size;
    (void) output_length;
    return PSA_ERROR_NOT_SUPPORTED;
}

psa_status_t mbedtls_test_opaque_cipher_finish(
    mbedtls_opaque_test_driver_cipher_operation_t *operation,
    uint8_t *output,
    size_t output_size,
    size_t *output_length)
{
    (void) operation;
    (void) output;
    (void) output_size;
    (void) output_length;
    return PSA_ERROR_NOT_SUPPORTED;
}
#endif /* PSA_CRYPTO_DRIVER_TEST */