22#ifndef MBEDTLS_ENTROPY_H
23#define MBEDTLS_ENTROPY_H
25#if !defined(MBEDTLS_CONFIG_FILE)
28#include MBEDTLS_CONFIG_FILE
33#if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
35#define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
37#if defined(MBEDTLS_SHA256_C)
38#define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
43#if defined(MBEDTLS_THREADING_C)
47#if defined(MBEDTLS_HAVEGE_C)
52#define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C
54#define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E
56#define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040
58#define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D
60#define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F
70#if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
71#define MBEDTLS_ENTROPY_MAX_SOURCES 20
74#if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
75#define MBEDTLS_ENTROPY_MAX_GATHER 128
80#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
81#define MBEDTLS_ENTROPY_BLOCK_SIZE 64
83#define MBEDTLS_ENTROPY_BLOCK_SIZE 32
86#define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024
87#define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
89#define MBEDTLS_ENTROPY_SOURCE_STRONG 1
90#define MBEDTLS_ENTROPY_SOURCE_WEAK 0
131#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
133#elif defined(MBEDTLS_ENTROPY_SHA256_ACCUMULATOR)
138#if defined(MBEDTLS_HAVEGE_C)
141#if defined(MBEDTLS_THREADING_C)
144#if defined(MBEDTLS_ENTROPY_NV_SEED)
145 int initial_entropy_run;
183 size_t threshold,
int strong );
219 const unsigned char *data,
size_t len );
221#if defined(MBEDTLS_ENTROPY_NV_SEED)
233#if defined(MBEDTLS_FS_IO)
261#if defined(MBEDTLS_SELF_TEST)
272#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
286int mbedtls_entropy_source_self_test(
int verbose );
Configuration options (set of defines)
void mbedtls_entropy_free(mbedtls_entropy_context *ctx)
Free the data in the context.
int(* mbedtls_entropy_f_source_ptr)(void *data, unsigned char *output, size_t len, size_t *olen)
Entropy poll callback pointer.
int mbedtls_entropy_update_seed_file(mbedtls_entropy_context *ctx, const char *path)
Read and update a seed file. Seed is added to this instance. No more than MBEDTLS_ENTROPY_MAX_SEED_SI...
int mbedtls_entropy_func(void *data, unsigned char *output, size_t len)
Retrieve entropy from the accumulator (Maximum length: MBEDTLS_ENTROPY_BLOCK_SIZE) (Thread-safe if MB...
#define MBEDTLS_ENTROPY_MAX_SOURCES
int mbedtls_entropy_update_manual(mbedtls_entropy_context *ctx, const unsigned char *data, size_t len)
Add data to the accumulator manually (Thread-safe if MBEDTLS_THREADING_C is enabled)
void mbedtls_entropy_init(mbedtls_entropy_context *ctx)
Initialize the context.
int mbedtls_entropy_write_seed_file(mbedtls_entropy_context *ctx, const char *path)
Write a seed file.
int mbedtls_entropy_gather(mbedtls_entropy_context *ctx)
Trigger an extra gather poll for the accumulator (Thread-safe if MBEDTLS_THREADING_C is enabled)
int mbedtls_entropy_add_source(mbedtls_entropy_context *ctx, mbedtls_entropy_f_source_ptr f_source, void *p_source, size_t threshold, int strong)
Adds an entropy source to poll (Thread-safe if MBEDTLS_THREADING_C is enabled)
int mbedtls_entropy_self_test(int verbose)
Checkup routine.
HAVEGE: HArdware Volatile Entropy Gathering and Expansion.
This file contains SHA-224 and SHA-256 definitions and functions.
This file contains SHA-384 and SHA-512 definitions and functions.
Entropy context structure.
mbedtls_threading_mutex_t mutex
mbedtls_entropy_source_state source[MBEDTLS_ENTROPY_MAX_SOURCES]
mbedtls_havege_state havege_data
mbedtls_sha512_context accumulator
mbedtls_entropy_f_source_ptr f_source
The SHA-256 context structure.
The SHA-512 context structure.
Threading abstraction layer.