27 #ifndef POLARSSL_HMAC_DRBG_H
28 #define POLARSSL_HMAC_DRBG_H
35 #define POLARSSL_ERR_HMAC_DRBG_REQUEST_TOO_BIG -0x0003
36 #define POLARSSL_ERR_HMAC_DRBG_INPUT_TOO_BIG -0x0005
37 #define POLARSSL_ERR_HMAC_DRBG_FILE_IO_ERROR -0x0007
38 #define POLARSSL_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED -0x0009
48 #if !defined(POLARSSL_HMAC_DRBG_RESEED_INTERVAL)
49 #define POLARSSL_HMAC_DRBG_RESEED_INTERVAL 10000
52 #if !defined(POLARSSL_HMAC_DRBG_MAX_INPUT)
53 #define POLARSSL_HMAC_DRBG_MAX_INPUT 256
56 #if !defined(POLARSSL_HMAC_DRBG_MAX_REQUEST)
57 #define POLARSSL_HMAC_DRBG_MAX_REQUEST 1024
60 #if !defined(POLARSSL_HMAC_DRBG_MAX_SEED_INPUT)
61 #define POLARSSL_HMAC_DRBG_MAX_SEED_INPUT 384
66 #define POLARSSL_HMAC_DRBG_PR_OFF 0
67 #define POLARSSL_HMAC_DRBG_PR_ON 1
86 int prediction_resistance;
91 int (*f_entropy)(
void *,
unsigned char *, size_t);
120 int (*f_entropy)(
void *,
unsigned char *,
size_t),
122 const unsigned char *custom,
140 const unsigned char *data,
size_t data_len );
186 const unsigned char *additional,
size_t add_len );
199 const unsigned char *additional,
size_t len );
218 unsigned char *output,
size_t output_len,
219 const unsigned char *additional,
244 #if defined(POLARSSL_FS_IO)
271 #if defined(POLARSSL_SELF_TEST)
277 int hmac_drbg_self_test(
int verbose );