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