done adding passwords, some refactor

utils.h

@@ -6,7 +6,7 @@
 
 void red_print_chars(uint8_t *c);
 
-void red_print_int(uint8_t *c);
+void red_print_int(uint8_t *c, uint8_t len);
 
 void red_print_hex(uint8_t *h);
 
@@ -14,6 +14,12 @@ size_t red_min_len(size_t a, size_t b);
 
 void red_send_chars_pass(uint8_t *out);
 
+uint8_t *hashing_string(uint8_t *str_to_hash);
+
+uint8_t *red_init_array(uint8_t len, uint8_t val);
+
+uint8_t **red_init_array_2d(uint8_t len_row, uint8_t len_col, uint8_t val);
+
 void red_write_to_storage(void);
 
 void red_read_from_storage(void);