24 #ifndef MBEDTLS_ENTROPY_H 25 #define MBEDTLS_ENTROPY_H 27 #if !defined(MBEDTLS_CONFIG_FILE) 30 #include MBEDTLS_CONFIG_FILE 35 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256) 37 #define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR 39 #if defined(MBEDTLS_SHA256_C) 40 #define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR 45 #if defined(MBEDTLS_THREADING_C) 49 #if defined(MBEDTLS_HAVEGE_C) 53 #define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C 54 #define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E 55 #define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040 56 #define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D 57 #define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F 67 #if !defined(MBEDTLS_ENTROPY_MAX_SOURCES) 68 #define MBEDTLS_ENTROPY_MAX_SOURCES 20 71 #if !defined(MBEDTLS_ENTROPY_MAX_GATHER) 72 #define MBEDTLS_ENTROPY_MAX_GATHER 128 77 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR) 78 #define MBEDTLS_ENTROPY_BLOCK_SIZE 64 80 #define MBEDTLS_ENTROPY_BLOCK_SIZE 32 83 #define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024 84 #define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES 86 #define MBEDTLS_ENTROPY_SOURCE_STRONG 1 87 #define MBEDTLS_ENTROPY_SOURCE_WEAK 0 126 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR) 133 #if defined(MBEDTLS_HAVEGE_C) 136 #if defined(MBEDTLS_THREADING_C) 139 #if defined(MBEDTLS_ENTROPY_NV_SEED) 140 int initial_entropy_run;
178 size_t threshold,
int strong );
214 const unsigned char *data,
size_t len );
216 #if defined(MBEDTLS_ENTROPY_NV_SEED) 228 #if defined(MBEDTLS_FS_IO) 256 #if defined(MBEDTLS_SELF_TEST) 267 #if defined(MBEDTLS_ENTROPY_HARDWARE_ALT) 281 int mbedtls_entropy_source_self_test(
int verbose );
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...
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.
The SHA-384 and SHA-512 cryptographic hash function.
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.
The SHA-224 and SHA-256 cryptographic hash function.
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)