26 #ifndef MBEDTLS_HMAC_DRBG_H
27 #define MBEDTLS_HMAC_DRBG_H
29 #if !defined(MBEDTLS_CONFIG_FILE)
32 #include MBEDTLS_CONFIG_FILE
37 #if defined(MBEDTLS_THREADING_C)
44 #define MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG -0x0003
45 #define MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG -0x0005
46 #define MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR -0x0007
47 #define MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED -0x0009
57 #if !defined(MBEDTLS_HMAC_DRBG_RESEED_INTERVAL)
58 #define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL 10000
61 #if !defined(MBEDTLS_HMAC_DRBG_MAX_INPUT)
62 #define MBEDTLS_HMAC_DRBG_MAX_INPUT 256
65 #if !defined(MBEDTLS_HMAC_DRBG_MAX_REQUEST)
66 #define MBEDTLS_HMAC_DRBG_MAX_REQUEST 1024
69 #if !defined(MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT)
70 #define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT 384
75 #define MBEDTLS_HMAC_DRBG_PR_OFF 0
76 #define MBEDTLS_HMAC_DRBG_PR_ON 1
103 #if defined(MBEDTLS_THREADING_C)
104 mbedtls_threading_mutex_t mutex;
144 int (*f_entropy)(
void *,
unsigned char *,
size_t),
146 const unsigned char *custom,
164 const unsigned char *data,
size_t data_len );
213 const unsigned char *additional,
size_t add_len );
226 const unsigned char *additional,
size_t len );
245 unsigned char *output,
size_t output_len,
246 const unsigned char *additional,
271 #if ! defined(MBEDTLS_DEPRECATED_REMOVED)
272 #if defined(MBEDTLS_DEPRECATED_WARNING)
273 #define MBEDTLS_DEPRECATED __attribute__((deprecated))
275 #define MBEDTLS_DEPRECATED
292 const unsigned char *additional,
size_t add_len );
293 #undef MBEDTLS_DEPRECATED
296 #if defined(MBEDTLS_FS_IO)
323 #if defined(MBEDTLS_SELF_TEST)
int mbedtls_hmac_drbg_seed(mbedtls_hmac_drbg_context *ctx, const mbedtls_md_info_t *md_info, int(*f_entropy)(void *, unsigned char *, size_t), void *p_entropy, const unsigned char *custom, size_t len)
HMAC_DRBG initial seeding Seed and setup entropy source for future reseeds.
#define MBEDTLS_MD_MAX_SIZE
int mbedtls_hmac_drbg_seed_buf(mbedtls_hmac_drbg_context *ctx, const mbedtls_md_info_t *md_info, const unsigned char *data, size_t data_len)
Initilisation of simpified HMAC_DRBG (never reseeds). (For use with deterministic ECDSA...
void mbedtls_hmac_drbg_set_reseed_interval(mbedtls_hmac_drbg_context *ctx, int interval)
Set the reseed interval (Default: MBEDTLS_HMAC_DRBG_RESEED_INTERVAL)
void mbedtls_hmac_drbg_free(mbedtls_hmac_drbg_context *ctx)
Free an HMAC_DRBG context.
int mbedtls_hmac_drbg_random(void *p_rng, unsigned char *output, size_t out_len)
HMAC_DRBG generate random.
Configuration options (set of defines)
int mbedtls_hmac_drbg_self_test(int verbose)
Checkup routine.
unsigned char V[MBEDTLS_MD_MAX_SIZE]
Threading abstraction layer.
struct mbedtls_hmac_drbg_context mbedtls_hmac_drbg_context
#define MBEDTLS_DEPRECATED
MBEDTLS_DEPRECATED void mbedtls_hmac_drbg_update(mbedtls_hmac_drbg_context *ctx, const unsigned char *additional, size_t add_len)
HMAC_DRBG update state.
int(* f_entropy)(void *, unsigned char *, size_t)
int mbedtls_hmac_drbg_update_seed_file(mbedtls_hmac_drbg_context *ctx, const char *path)
Read and update a seed file. Seed is added to this instance.
This file contains the generic message-digest wrapper.
void mbedtls_hmac_drbg_init(mbedtls_hmac_drbg_context *ctx)
HMAC_DRBG context initialization Makes the context ready for mbedtls_hmac_drbg_seed(), mbedtls_hmac_drbg_seed_buf() or mbedtls_hmac_drbg_free().
int prediction_resistance
int mbedtls_hmac_drbg_random_with_add(void *p_rng, unsigned char *output, size_t output_len, const unsigned char *additional, size_t add_len)
HMAC_DRBG generate random with additional update input.
int mbedtls_hmac_drbg_reseed(mbedtls_hmac_drbg_context *ctx, const unsigned char *additional, size_t len)
HMAC_DRBG reseeding (extracts data from entropy source)
struct mbedtls_md_info_t mbedtls_md_info_t
mbedtls_md_context_t md_ctx
int mbedtls_hmac_drbg_write_seed_file(mbedtls_hmac_drbg_context *ctx, const char *path)
Write a seed file.
int mbedtls_hmac_drbg_update_ret(mbedtls_hmac_drbg_context *ctx, const unsigned char *additional, size_t add_len)
HMAC_DRBG update state.
void mbedtls_hmac_drbg_set_entropy_len(mbedtls_hmac_drbg_context *ctx, size_t len)
Set the amount of entropy grabbed on each reseed (Default: given by the security strength, which depends on the hash used, see mbedtls_hmac_drbg_init() )
void mbedtls_hmac_drbg_set_prediction_resistance(mbedtls_hmac_drbg_context *ctx, int resistance)
Enable / disable prediction resistance (Default: Off)