Update rand.h (open-quantum-safe#569)

* Update rand.h * Update rand.h
mraavi432 · Nov 6, 2019 · c01d3ce · c01d3ce
1 parent 4cb278e
commit c01d3ce
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/common/rand.h b/src/common/rand.h
@@ -59,7 +59,8 @@ OQS_API void OQS_randombytes(uint8_t *random_array, size_t bytes_to_read);
  * Initializes the NIST DRBG with a given seed.
  *
  * @param[in] entropy_input The seed; must be exactly 48 bytes
- * @param[in] personalization_string An optional personalization string; may be NULL
+ * @param[in] personalization_string An optional personalization string; 
+ * may be NULL; if not NULL, must be at least 48 bytes long
  * @param[in] security_strength The required security strength; must be 256
  */
 OQS_API void OQS_randombytes_nist_kat_init(const uint8_t *entropy_input, const uint8_t *personalization_string, int security_strength);