10#ifndef MBEDTLS_ENTROPY_H
11#define MBEDTLS_ENTROPY_H
20#if (defined(MBEDTLS_MD_CAN_SHA512) || defined(PSA_WANT_ALG_SHA_512)) && \
21 !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
22#define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
23#define MBEDTLS_ENTROPY_MD MBEDTLS_MD_SHA512
24#define MBEDTLS_ENTROPY_BLOCK_SIZE 64
26#if (defined(MBEDTLS_MD_CAN_SHA256) || defined(PSA_WANT_ALG_SHA_256))
27#define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
28#define MBEDTLS_ENTROPY_MD MBEDTLS_MD_SHA256
29#define MBEDTLS_ENTROPY_BLOCK_SIZE 32
33#if defined(MBEDTLS_THREADING_C)
39#define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C
41#define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E
43#define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040
45#define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D
47#define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F
57#if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
58#define MBEDTLS_ENTROPY_MAX_SOURCES 20
61#if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
62#define MBEDTLS_ENTROPY_MAX_GATHER 128
67#define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024
68#define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
70#define MBEDTLS_ENTROPY_SOURCE_STRONG 1
71#define MBEDTLS_ENTROPY_SOURCE_WEAK 0
113#if defined(MBEDTLS_THREADING_C)
116#if defined(MBEDTLS_ENTROPY_NV_SEED)
122#if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
127 unsigned char *output,
size_t len,
size_t *olen);
163 size_t threshold,
int strong);
199 const unsigned char *data,
size_t len);
201#if defined(MBEDTLS_ENTROPY_NV_SEED)
213#if defined(MBEDTLS_FS_IO)
241#if defined(MBEDTLS_SELF_TEST)
252#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
266int mbedtls_entropy_source_self_test(
int verbose);
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.
Build-time configuration info.
This file contains the generic functions for message-digest (hashing) and HMAC.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)
Entropy context structure.
Threading abstraction layer.