mbed TLS v2.28.0
entropy_poll.h
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1
6/*
7 * Copyright The Mbed TLS Contributors
8 * SPDX-License-Identifier: Apache-2.0
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
11 * not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 */
22#ifndef MBEDTLS_ENTROPY_POLL_H
23#define MBEDTLS_ENTROPY_POLL_H
24
25#if !defined(MBEDTLS_CONFIG_FILE)
26#include "mbedtls/config.h"
27#else
28#include MBEDTLS_CONFIG_FILE
29#endif
30
31#include <stddef.h>
32
33#ifdef __cplusplus
34extern "C" {
35#endif
36
37/*
38 * Default thresholds for built-in sources, in bytes
39 */
40#define MBEDTLS_ENTROPY_MIN_PLATFORM 32
41#define MBEDTLS_ENTROPY_MIN_HAVEGE 32
42#define MBEDTLS_ENTROPY_MIN_HARDCLOCK 4
43#if !defined(MBEDTLS_ENTROPY_MIN_HARDWARE)
44#define MBEDTLS_ENTROPY_MIN_HARDWARE 32
45#endif
46
50#if defined(MBEDTLS_TEST_NULL_ENTROPY)
51 int mbedtls_null_entropy_poll( void *data,
52 unsigned char *output, size_t len, size_t *olen );
53#endif
54
55#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
60 unsigned char *output, size_t len, size_t *olen );
61#endif
62
63#if defined(MBEDTLS_HAVEGE_C)
69int mbedtls_havege_poll( void *data,
70 unsigned char *output, size_t len, size_t *olen );
71#endif
72
73#if defined(MBEDTLS_TIMING_C)
77int mbedtls_hardclock_poll( void *data,
78 unsigned char *output, size_t len, size_t *olen );
79#endif
80
81#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
90int mbedtls_hardware_poll( void *data,
91 unsigned char *output, size_t len, size_t *olen );
92#endif
93
94#if defined(MBEDTLS_ENTROPY_NV_SEED)
100int mbedtls_nv_seed_poll( void *data,
101 unsigned char *output, size_t len, size_t *olen );
102#endif
103
104#ifdef __cplusplus
105}
106#endif
107
108#endif /* entropy_poll.h */
Configuration options (set of defines)
int mbedtls_havege_poll(void *data, unsigned char *output, size_t len, size_t *olen)
HAVEGE based entropy poll callback.
int mbedtls_platform_entropy_poll(void *data, unsigned char *output, size_t len, size_t *olen)
Entropy poll callback that provides 0 entropy.
int mbedtls_hardclock_poll(void *data, unsigned char *output, size_t len, size_t *olen)
mbedtls_timing_hardclock-based entropy poll callback