-void drbg_release_entropy(RAND_DRBG *drbg, unsigned char *out);
-size_t drbg_entropy_from_parent(RAND_DRBG *drbg,
- unsigned char **pout,
- int entropy, size_t min_len, size_t max_len);
-size_t drbg_entropy_from_system(RAND_DRBG *drbg,
- unsigned char **pout,
- int entropy, size_t min_len, size_t max_len);
-
-/* DRBG functions implementing AES-CTR */
-int ctr_init(RAND_DRBG *drbg);
-int ctr_uninstantiate(RAND_DRBG *drbg);
-int ctr_instantiate(RAND_DRBG *drbg,
- const unsigned char *ent, size_t entlen,
- const unsigned char *nonce, size_t noncelen,
- const unsigned char *pers, size_t perslen);
-int ctr_reseed(RAND_DRBG *drbg,
- const unsigned char *ent, size_t entlen,
- const unsigned char *adin, size_t adinlen);
-int ctr_generate(RAND_DRBG *drbg,
- unsigned char *out, size_t outlen,
- const unsigned char *adin, size_t adinlen);
+size_t rand_drbg_get_entropy(RAND_DRBG *drbg,
+ unsigned char **pout,
+ int entropy, size_t min_len, size_t max_len);
+void rand_drbg_cleanup_entropy(RAND_DRBG *drbg,
+ unsigned char *out, size_t outlen);
+size_t rand_drbg_get_additional_data(unsigned char **pout, size_t max_len);
+
+/* DRBG helpers */
+int rand_drbg_restart(RAND_DRBG *drbg,
+ const unsigned char *buffer, size_t len, size_t entropy);
+
+/* initializes the AES-CTR DRBG implementation */
+int drbg_ctr_init(RAND_DRBG *drbg);