| /** \file fake_external_rng_for_test.c |
| * |
| * \brief Helper functions to test PSA crypto functionality. |
| */ |
| |
| /* |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
| */ |
| |
| #include <test/fake_external_rng_for_test.h> |
| |
| #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| #include <test/random.h> |
| #include <psa/crypto.h> |
| |
| static int test_insecure_external_rng_enabled = 0; |
| |
| void mbedtls_test_enable_insecure_external_rng(void) |
| { |
| test_insecure_external_rng_enabled = 1; |
| } |
| |
| void mbedtls_test_disable_insecure_external_rng(void) |
| { |
| test_insecure_external_rng_enabled = 0; |
| } |
| |
| psa_status_t mbedtls_psa_external_get_random( |
| mbedtls_psa_external_random_context_t *context, |
| uint8_t *output, size_t output_size, size_t *output_length) |
| { |
| (void) context; |
| |
| if (!test_insecure_external_rng_enabled) { |
| return PSA_ERROR_INSUFFICIENT_ENTROPY; |
| } |
| |
| /* This implementation is for test purposes only! |
| * Use the libc non-cryptographic random generator. */ |
| mbedtls_test_rnd_std_rand(NULL, output, output_size); |
| *output_length = output_size; |
| return PSA_SUCCESS; |
| } |
| #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |