22 #ifndef MBEDTLS_ENTROPY_H
23 #define MBEDTLS_ENTROPY_H
25 #if !defined(MBEDTLS_CONFIG_FILE)
28 #include MBEDTLS_CONFIG_FILE
33 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
35 #define MBEDTLS_ENTROPY_SHA512_ACCUMULATOR
37 #if defined(MBEDTLS_SHA256_C)
38 #define MBEDTLS_ENTROPY_SHA256_ACCUMULATOR
43 #if defined(MBEDTLS_THREADING_C)
47 #if defined(MBEDTLS_HAVEGE_C)
51 #define MBEDTLS_ERR_ENTROPY_SOURCE_FAILED -0x003C
52 #define MBEDTLS_ERR_ENTROPY_MAX_SOURCES -0x003E
53 #define MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED -0x0040
54 #define MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE -0x003D
55 #define MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR -0x003F
65 #if !defined(MBEDTLS_ENTROPY_MAX_SOURCES)
66 #define MBEDTLS_ENTROPY_MAX_SOURCES 20
69 #if !defined(MBEDTLS_ENTROPY_MAX_GATHER)
70 #define MBEDTLS_ENTROPY_MAX_GATHER 128
75 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
76 #define MBEDTLS_ENTROPY_BLOCK_SIZE 64
78 #define MBEDTLS_ENTROPY_BLOCK_SIZE 32
81 #define MBEDTLS_ENTROPY_MAX_SEED_SIZE 1024
82 #define MBEDTLS_ENTROPY_SOURCE_MANUAL MBEDTLS_ENTROPY_MAX_SOURCES
84 #define MBEDTLS_ENTROPY_SOURCE_STRONG 1
85 #define MBEDTLS_ENTROPY_SOURCE_WEAK 0
124 #if defined(MBEDTLS_ENTROPY_SHA512_ACCUMULATOR)
131 #if defined(MBEDTLS_HAVEGE_C)
134 #if defined(MBEDTLS_THREADING_C)
137 #if defined(MBEDTLS_ENTROPY_NV_SEED)
176 size_t threshold,
int strong );
212 const unsigned char *data,
size_t len );
214 #if defined(MBEDTLS_ENTROPY_NV_SEED)
226 #if defined(MBEDTLS_FS_IO)
254 #if defined(MBEDTLS_SELF_TEST)
265 #if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
mbedtls_entropy_source_state source[MBEDTLS_ENTROPY_MAX_SOURCES]
mbedtls_havege_state havege_data
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.
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.
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.
HAVEGE: HArdware Volatile Entropy Gathering and Expansion.
void mbedtls_entropy_free(mbedtls_entropy_context *ctx)
Free the data in the context.
mbedtls_sha256_context accumulator
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...
This file contains SHA-224 and SHA-256 definitions and functions.
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)