23 #ifndef MBEDTLS_CTR_DRBG_H
24 #define MBEDTLS_CTR_DRBG_H
28 #if defined(MBEDTLS_THREADING_C)
32 #define MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED -0x0034
33 #define MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG -0x0036
34 #define MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG -0x0038
35 #define MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR -0x003A
37 #define MBEDTLS_CTR_DRBG_BLOCKSIZE 16
38 #define MBEDTLS_CTR_DRBG_KEYSIZE 32
39 #define MBEDTLS_CTR_DRBG_KEYBITS ( MBEDTLS_CTR_DRBG_KEYSIZE * 8 )
40 #define MBEDTLS_CTR_DRBG_SEEDLEN ( MBEDTLS_CTR_DRBG_KEYSIZE + MBEDTLS_CTR_DRBG_BLOCKSIZE )
51 #if !defined(MBEDTLS_CTR_DRBG_ENTROPY_LEN)
52 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256)
53 #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 48
55 #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 32
59 #if !defined(MBEDTLS_CTR_DRBG_RESEED_INTERVAL)
60 #define MBEDTLS_CTR_DRBG_RESEED_INTERVAL 10000
63 #if !defined(MBEDTLS_CTR_DRBG_MAX_INPUT)
64 #define MBEDTLS_CTR_DRBG_MAX_INPUT 256
67 #if !defined(MBEDTLS_CTR_DRBG_MAX_REQUEST)
68 #define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024
71 #if !defined(MBEDTLS_CTR_DRBG_MAX_SEED_INPUT)
72 #define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384
77 #define MBEDTLS_CTR_DRBG_PR_OFF 0
78 #define MBEDTLS_CTR_DRBG_PR_ON 1
89 unsigned char counter[16];
102 int (*f_entropy)(
void *,
unsigned char *, size_t);
106 #if defined(MBEDTLS_THREADING_C)
107 mbedtls_threading_mutex_t mutex;
140 int (*f_entropy)(
void *,
unsigned char *,
size_t),
142 const unsigned char *custom,
195 const unsigned char *additional,
size_t len );
209 const unsigned char *additional,
size_t add_len );
227 unsigned char *output,
size_t output_len,
228 const unsigned char *additional,
size_t add_len );
244 unsigned char *output,
size_t output_len );
246 #if defined(MBEDTLS_FS_IO)
283 int (*)(
void *,
unsigned char *,
size_t),
void *,
284 const unsigned char *,
size_t,
size_t );
CTR_DRBG context structure.
void mbedtls_ctr_drbg_free(mbedtls_ctr_drbg_context *ctx)
Clear CTR_CRBG context data.
void mbedtls_ctr_drbg_update(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t add_len)
CTR_DRBG update state.
int mbedtls_ctr_drbg_seed_entropy_len(mbedtls_ctr_drbg_context *, int(*)(void *, unsigned char *, size_t), void *, const unsigned char *, size_t, size_t)
int prediction_resistance
void mbedtls_ctr_drbg_init(mbedtls_ctr_drbg_context *ctx)
CTR_DRBG context initialization Makes the context ready for mbedtls_ctr_drbg_seed() or mbedtls_ctr_dr...
int mbedtls_ctr_drbg_random(void *p_rng, unsigned char *output, size_t output_len)
CTR_DRBG generate random.
void mbedtls_ctr_drbg_set_reseed_interval(mbedtls_ctr_drbg_context *ctx, int interval)
Set the reseed interval (Default: MBEDTLS_CTR_DRBG_RESEED_INTERVAL)
void mbedtls_ctr_drbg_set_prediction_resistance(mbedtls_ctr_drbg_context *ctx, int resistance)
Enable / disable prediction resistance (Default: Off)
int mbedtls_ctr_drbg_reseed(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t len)
CTR_DRBG reseeding (extracts data from entropy source)
Threading abstraction layer.
int mbedtls_ctr_drbg_random_with_add(void *p_rng, unsigned char *output, size_t output_len, const unsigned char *additional, size_t add_len)
CTR_DRBG generate random with additional update input.
void mbedtls_ctr_drbg_set_entropy_len(mbedtls_ctr_drbg_context *ctx, size_t len)
Set the amount of entropy grabbed on each (re)seed (Default: MBEDTLS_CTR_DRBG_ENTROPY_LEN) ...
int mbedtls_ctr_drbg_seed(mbedtls_ctr_drbg_context *ctx, int(*f_entropy)(void *, unsigned char *, size_t), void *p_entropy, const unsigned char *custom, size_t len)
CTR_DRBG initial seeding Seed and setup entropy source for future reseeds.
int mbedtls_ctr_drbg_self_test(int verbose)
Checkup routine.
mbedtls_aes_context aes_ctx