22#ifndef MBEDTLS_ENTROPY_H
23#define MBEDTLS_ENTROPY_H
30#if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
32#define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
34#if defined(MBEDTLS_SHA256_C)
35#define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
40#if defined(MBEDTLS_THREADING_C)
46#define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C
48#define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E
50#define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040
52#define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D
54#define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F
64#if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
65#define MBEDTLS_ENTROPY_MAX_SOURCES 20
68#if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
69#define MBEDTLS_ENTROPY_MAX_GATHER 128
74#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
75#define MBEDTLS_ENTROPY_BLOCK_SIZE 64
77#define MBEDTLS_ENTROPY_BLOCK_SIZE 32
80#define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024
81#define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
83#define MBEDTLS_ENTROPY_SOURCE_STRONG 1
84#define MBEDTLS_ENTROPY_SOURCE_WEAK 0
125#if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
127#elif defined(MBEDTLS_ENTROPY_SHA256_ACCUMULATOR)
132#if defined(MBEDTLS_THREADING_C)
135#if defined(MBEDTLS_ENTROPY_NV_SEED)
141#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
146 unsigned char *output,
size_t len,
size_t *olen );
182 size_t threshold,
int strong );
218 const unsigned char *data,
size_t len );
220#if defined(MBEDTLS_ENTROPY_NV_SEED)
232#if defined(MBEDTLS_FS_IO)
260#if defined(MBEDTLS_SELF_TEST)
271#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
285int mbedtls_entropy_source_self_test(
int verbose );
Build-time configuration info.
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.
int mbedtls_platform_entropy_poll(void *data, unsigned char *output, size_t len, size_t *olen)
Platform-specific entropy poll callback.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)
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.
The SHA-256 context structure.
The SHA-512 context structure.
Threading abstraction layer.