41 #ifndef MBEDTLS_CTR_DRBG_H 42 #define MBEDTLS_CTR_DRBG_H 44 #if !defined(MBEDTLS_CONFIG_FILE) 47 #include MBEDTLS_CONFIG_FILE 52 #if defined(MBEDTLS_THREADING_C) 57 #define MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED -0x0034 59 #define MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG -0x0036 61 #define MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG -0x0038 63 #define MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR -0x003A 65 #define MBEDTLS_CTR_DRBG_BLOCKSIZE 16 67 #if defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) 68 #define MBEDTLS_CTR_DRBG_KEYSIZE 16 75 #define MBEDTLS_CTR_DRBG_KEYSIZE 32 83 #define MBEDTLS_CTR_DRBG_KEYBITS (MBEDTLS_CTR_DRBG_KEYSIZE * 8) 84 #define MBEDTLS_CTR_DRBG_SEEDLEN (MBEDTLS_CTR_DRBG_KEYSIZE + MBEDTLS_CTR_DRBG_BLOCKSIZE) 99 #if !defined(MBEDTLS_CTR_DRBG_ENTROPY_LEN) 100 #if defined(MBEDTLS_SHA512_C) && !defined(MBEDTLS_ENTROPY_FORCE_SHA256) 104 #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 48 112 #if !defined(MBEDTLS_CTR_DRBG_USE_128_BIT_KEY) 117 #define MBEDTLS_CTR_DRBG_ENTROPY_LEN 32 121 #if !defined(MBEDTLS_CTR_DRBG_RESEED_INTERVAL) 122 #define MBEDTLS_CTR_DRBG_RESEED_INTERVAL 10000 126 #if !defined(MBEDTLS_CTR_DRBG_MAX_INPUT) 127 #define MBEDTLS_CTR_DRBG_MAX_INPUT 256 131 #if !defined(MBEDTLS_CTR_DRBG_MAX_REQUEST) 132 #define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024 136 #if !defined(MBEDTLS_CTR_DRBG_MAX_SEED_INPUT) 137 #define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384 143 #define MBEDTLS_CTR_DRBG_PR_OFF 0 145 #define MBEDTLS_CTR_DRBG_PR_ON 1 152 #if MBEDTLS_CTR_DRBG_ENTROPY_LEN >= MBEDTLS_CTR_DRBG_KEYSIZE * 3 / 2 159 #define MBEDTLS_CTR_DRBG_ENTROPY_NONCE_LEN 0 167 #define MBEDTLS_CTR_DRBG_ENTROPY_NONCE_LEN (MBEDTLS_CTR_DRBG_ENTROPY_LEN + 1) / 2 205 #if defined(MBEDTLS_THREADING_C) 265 #if MBEDTLS_CTR_DRBG_ENTROPY_NONCE_LEN == 0 277 #if defined(MBEDTLS_THREADING_C) 332 int (*f_entropy)(
void *,
unsigned char *,
size_t),
334 const unsigned char *custom,
446 const unsigned char *additional,
size_t len);
469 const unsigned char *additional,
504 unsigned char *output,
size_t output_len,
505 const unsigned char *additional,
size_t add_len);
513 #if defined(MBEDTLS_THREADING_C) 532 unsigned char *output,
size_t output_len);
535 #if !defined(MBEDTLS_DEPRECATED_REMOVED) 536 #if defined(MBEDTLS_DEPRECATED_WARNING) 537 #define MBEDTLS_DEPRECATED __attribute__((deprecated)) 539 #define MBEDTLS_DEPRECATED 558 const unsigned char *additional,
560 #undef MBEDTLS_DEPRECATED 563 #if defined(MBEDTLS_FS_IO) 594 #if defined(MBEDTLS_SELF_TEST) int(* f_entropy)(void *, unsigned char *, size_t)
The CTR_DRBG context structure.
void mbedtls_ctr_drbg_free(mbedtls_ctr_drbg_context *ctx)
This function resets CTR_DRBG context to the state immediately after initial call of mbedtls_ctr_drbg...
int prediction_resistance
void mbedtls_ctr_drbg_init(mbedtls_ctr_drbg_context *ctx)
This function initializes the CTR_DRBG context, and prepares it for mbedtls_ctr_drbg_seed() or mbedtl...
mbedtls_threading_mutex_t mutex
#define MBEDTLS_DEPRECATED
Configuration options (set of defines)
int mbedtls_ctr_drbg_random(void *p_rng, unsigned char *output, size_t output_len)
This function uses CTR_DRBG to generate random data.
int mbedtls_ctr_drbg_write_seed_file(mbedtls_ctr_drbg_context *ctx, const char *path)
This function writes a seed file.
void mbedtls_ctr_drbg_set_reseed_interval(mbedtls_ctr_drbg_context *ctx, int interval)
This function sets the reseed interval.
void mbedtls_ctr_drbg_set_prediction_resistance(mbedtls_ctr_drbg_context *ctx, int resistance)
This function turns prediction resistance on or off. The default value is off.
int mbedtls_ctr_drbg_reseed(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t len)
This function reseeds the CTR_DRBG context, that is extracts data from the entropy source...
Threading abstraction layer.
int mbedtls_ctr_drbg_update_seed_file(mbedtls_ctr_drbg_context *ctx, const char *path)
This function reads and updates a seed file. The seed is added to this instance.
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)
This function updates a CTR_DRBG instance with additional data and uses it to generate random data...
int mbedtls_ctr_drbg_update_ret(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t add_len)
This function updates the state of the CTR_DRBG context.
void mbedtls_ctr_drbg_set_entropy_len(mbedtls_ctr_drbg_context *ctx, size_t len)
This function sets the amount of entropy grabbed on each seed or reseed.
This file contains AES definitions and functions.
int mbedtls_ctr_drbg_set_nonce_len(mbedtls_ctr_drbg_context *ctx, size_t len)
This function sets the amount of entropy grabbed as a nonce for the initial seeding.
struct mbedtls_ctr_drbg_context mbedtls_ctr_drbg_context
The CTR_DRBG context structure.
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)
This function seeds and sets up the CTR_DRBG entropy source for future reseeds.
int mbedtls_ctr_drbg_self_test(int verbose)
The CTR_DRBG checkup routine.
unsigned char counter[16]
mbedtls_aes_context aes_ctx
MBEDTLS_DEPRECATED void mbedtls_ctr_drbg_update(mbedtls_ctr_drbg_context *ctx, const unsigned char *additional, size_t add_len)
This function updates the state of the CTR_DRBG context.
The AES context-type definition.