49 #ifndef MBEDTLS_ENTROPY_H 50 #define MBEDTLS_ENTROPY_H 52 #if !defined(MBEDTLS_CONFIG_FILE) 55 #include MBEDTLS_CONFIG_FILE 60 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256) 62 #define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR 64 #if defined(MBEDTLS_SHA256_C) 65 #define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR 70 #if defined(MBEDTLS_THREADING_C) 74 #if defined(MBEDTLS_HAVEGE_C) 78 #define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C 79 #define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E 80 #define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040 81 #define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D 82 #define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F 92 #if !defined(MBEDTLS_ENTROPY_MAX_SOURCES) 93 #define MBEDTLS_ENTROPY_MAX_SOURCES 20 96 #if !defined(MBEDTLS_ENTROPY_MAX_GATHER) 97 #define MBEDTLS_ENTROPY_MAX_GATHER 128 102 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR) 103 #define MBEDTLS_ENTROPY_BLOCK_SIZE 64 105 #define MBEDTLS_ENTROPY_BLOCK_SIZE 32 108 #define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024 109 #define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES 111 #define MBEDTLS_ENTROPY_SOURCE_STRONG 1 112 #define MBEDTLS_ENTROPY_SOURCE_WEAK 0 151 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR) 158 #if defined(MBEDTLS_HAVEGE_C) 161 #if defined(MBEDTLS_THREADING_C) 164 #if defined(MBEDTLS_ENTROPY_NV_SEED) 165 int initial_entropy_run;
203 size_t threshold,
int strong );
239 const unsigned char *data,
size_t len );
241 #if defined(MBEDTLS_ENTROPY_NV_SEED) 253 #if defined(MBEDTLS_FS_IO) 281 #if defined(MBEDTLS_SELF_TEST) 292 #if defined(MBEDTLS_ENTROPY_HARDWARE_ALT) 306 int mbedtls_entropy_source_self_test(
int verbose );
mbedtls_entropy_source_state source[MBEDTLS_ENTROPY_MAX_SOURCES]
mbedtls_havege_state havege_data
mbedtls_entropy_f_source_ptr f_source
#define MBEDTLS_ENTROPY_MAX_SOURCES
Configuration options (set of defines)
mbedtls_threading_mutex_t mutex
void mbedtls_entropy_init(mbedtls_entropy_context *ctx)
Initialize the context.
Entropy context structure.
int mbedtls_entropy_self_test(int verbose)
Checkup routine.
mbedtls_sha512_context accumulator
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.
The SHA-512 context structure.
HAVEGE: HArdware Volatile Entropy Gathering and Expansion.
The SHA-256 context structure.
void mbedtls_entropy_free(mbedtls_entropy_context *ctx)
Free the data in the context.
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.
This file contains SHA-384 and SHA-512 definitions and functions.
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_f_source_ptr)(void *data, unsigned char *output, size_t len, size_t *olen)
Entropy poll callback pointer.
This file contains SHA-224 and SHA-256 definitions and functions.
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)