51 #ifndef MBEDTLS_ENTROPY_H
52 #define MBEDTLS_ENTROPY_H
54 #if !defined(MBEDTLS_CONFIG_FILE)
57 #include MBEDTLS_CONFIG_FILE
62 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
64 #define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
66 #if defined(MBEDTLS_SHA256_C)
67 #define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
72 #if defined(MBEDTLS_THREADING_C)
76 #if defined(MBEDTLS_HAVEGE_C)
80 #define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C
81 #define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E
82 #define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040
83 #define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D
84 #define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F
94 #if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
95 #define MBEDTLS_ENTROPY_MAX_SOURCES 20
98 #if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
99 #define MBEDTLS_ENTROPY_MAX_GATHER 128
104 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
105 #define MBEDTLS_ENTROPY_BLOCK_SIZE 64
107 #define MBEDTLS_ENTROPY_BLOCK_SIZE 32
110 #define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024
111 #define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
113 #define MBEDTLS_ENTROPY_SOURCE_STRONG 1
114 #define MBEDTLS_ENTROPY_SOURCE_WEAK 0
153 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
160 #if defined(MBEDTLS_HAVEGE_C)
163 #if defined(MBEDTLS_THREADING_C)
164 mbedtls_threading_mutex_t mutex;
166 #if defined(MBEDTLS_ENTROPY_NV_SEED)
167 int initial_entropy_run;
205 size_t threshold,
int strong );
241 const unsigned char *data,
size_t len );
243 #if defined(MBEDTLS_ENTROPY_NV_SEED)
255 #if defined(MBEDTLS_FS_IO)
283 #if defined(MBEDTLS_SELF_TEST)
294 #if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
308 int mbedtls_entropy_source_self_test(
int verbose );
int(* mbedtls_entropy_f_source_ptr)(void *data, unsigned char *output, size_t len, size_t *olen)
Entropy poll callback pointer.
mbedtls_entropy_f_source_ptr f_source
#define MBEDTLS_ENTROPY_MAX_SOURCES
Configuration options (set of defines)
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...
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)