10 #ifndef MBEDTLS_ENTROPY_H
11 #define MBEDTLS_ENTROPY_H
20 #if defined(MBEDTLS_MD_CAN_SHA512) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
21 #define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
22 #define MBEDTLS_ENTROPY_MD MBEDTLS_MD_SHA512
23 #define MBEDTLS_ENTROPY_BLOCK_SIZE 64
25 #if defined(MBEDTLS_MD_CAN_SHA256)
26 #define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
27 #define MBEDTLS_ENTROPY_MD MBEDTLS_MD_SHA256
28 #define MBEDTLS_ENTROPY_BLOCK_SIZE 32
32 #if defined(MBEDTLS_THREADING_C)
38 #define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C
40 #define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E
42 #define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040
44 #define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D
46 #define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F
56 #if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
57 #define MBEDTLS_ENTROPY_MAX_SOURCES 20
60 #if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
61 #define MBEDTLS_ENTROPY_MAX_GATHER 128
66 #define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024
67 #define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
69 #define MBEDTLS_ENTROPY_SOURCE_STRONG 1
70 #define MBEDTLS_ENTROPY_SOURCE_WEAK 0
112 #if defined(MBEDTLS_THREADING_C)
115 #if defined(MBEDTLS_ENTROPY_NV_SEED)
121 #if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
125 int mbedtls_platform_entropy_poll(
void *data,
126 unsigned char *output,
size_t len,
size_t *olen);
162 size_t threshold,
int strong);
198 const unsigned char *data,
size_t len);
200 #if defined(MBEDTLS_ENTROPY_NV_SEED)
212 #if defined(MBEDTLS_FS_IO)
240 #if defined(MBEDTLS_SELF_TEST)
251 #if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
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_nv_seed(mbedtls_entropy_context *ctx)
Trigger an update of the seed file in NV by using the current entropy pool.
#define MBEDTLS_ENTROPY_MAX_SOURCES
#define MBEDTLS_PRIVATE(member)
void mbedtls_entropy_init(mbedtls_entropy_context *ctx)
Initialize the context.
Entropy context structure.
int mbedtls_entropy_self_test(int verbose)
Checkup routine.
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...
struct mbedtls_entropy_source_state mbedtls_entropy_source_state
Entropy source state.
Threading abstraction layer.
Macro wrapper for struct's members.
Build-time configuration info.
void mbedtls_entropy_free(mbedtls_entropy_context *ctx)
Free the data in the context.
This file contains the generic functions for message-digest (hashing) and HMAC.
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) ...
int mbedtls_entropy_write_seed_file(mbedtls_entropy_context *ctx, const char *path)
Write a seed file.
struct mbedtls_entropy_context mbedtls_entropy_context
Entropy context structure.
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_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_source_self_test(int verbose)
Checkup routine.
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)