mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-12-29 01:55:39 +00:00
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/**
|
|
* \file random.h
|
|
*
|
|
* \brief This file contains the prototypes of helper functions to generate
|
|
* random numbers for the purpose of testing.
|
|
*/
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef TEST_RANDOM_H
|
|
#define TEST_RANDOM_H
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
typedef struct
|
|
{
|
|
unsigned char *buf; /* Pointer to a buffer of length bytes. */
|
|
size_t length;
|
|
/* If fallback_f_rng is NULL, fail after delivering length bytes. */
|
|
int ( *fallback_f_rng )( void*, unsigned char *, size_t );
|
|
void *fallback_p_rng;
|
|
} mbedtls_test_rnd_buf_info;
|
|
|
|
/**
|
|
* Info structure for the pseudo random function
|
|
*
|
|
* Key should be set at the start to a test-unique value.
|
|
* Do not forget endianness!
|
|
* State( v0, v1 ) should be set to zero.
|
|
*/
|
|
typedef struct
|
|
{
|
|
uint32_t key[16];
|
|
uint32_t v0, v1;
|
|
} mbedtls_test_rnd_pseudo_info;
|
|
|
|
/**
|
|
* This function just returns data from rand().
|
|
* Although predictable and often similar on multiple
|
|
* runs, this does not result in identical random on
|
|
* each run. So do not use this if the results of a
|
|
* test depend on the random data that is generated.
|
|
*
|
|
* rng_state shall be NULL.
|
|
*/
|
|
int mbedtls_test_rnd_std_rand( void *rng_state,
|
|
unsigned char *output,
|
|
size_t len );
|
|
|
|
/**
|
|
* This function only returns zeros.
|
|
*
|
|
* \p rng_state shall be \c NULL.
|
|
*/
|
|
int mbedtls_test_rnd_zero_rand( void *rng_state,
|
|
unsigned char *output,
|
|
size_t len );
|
|
|
|
/**
|
|
* This function returns random data based on a buffer it receives.
|
|
*
|
|
* \p rng_state shall be a pointer to a #mbedtls_test_rnd_buf_info structure.
|
|
*
|
|
* The number of bytes released from the buffer on each call to
|
|
* the random function is specified by \p len.
|
|
*
|
|
* After the buffer is empty, this function will call the fallback RNG in the
|
|
* #mbedtls_test_rnd_buf_info structure if there is one, and
|
|
* will return #MBEDTLS_ERR_ENTROPY_SOURCE_FAILED otherwise.
|
|
*/
|
|
int mbedtls_test_rnd_buffer_rand( void *rng_state,
|
|
unsigned char *output,
|
|
size_t len );
|
|
|
|
/**
|
|
* This function returns random based on a pseudo random function.
|
|
* This means the results should be identical on all systems.
|
|
* Pseudo random is based on the XTEA encryption algorithm to
|
|
* generate pseudorandom.
|
|
*
|
|
* \p rng_state shall be a pointer to a #mbedtls_test_rnd_pseudo_info structure.
|
|
*/
|
|
int mbedtls_test_rnd_pseudo_rand( void *rng_state,
|
|
unsigned char *output,
|
|
size_t len );
|
|
|
|
#endif /* TEST_RANDOM_H */
|