2  * Random number generator
8  * This random number generator is used to provide additional entropy to the
19  * drivers/char/random.c, but the implementation here is simpler and not as
29 #include <sys/random.h>
37 #include "random.h"
148 	wpa_hexdump_key(MSG_EXCESSIVE, "random pool",  in random_add_randomness()
152 	wpa_hexdump_key(MSG_EXCESSIVE, "random pool",  in random_add_randomness()
170 	wpa_hexdump_key(MSG_EXCESSIVE, "random from os_get_random",  in random_get_bytes()
179 		wpa_hexdump_key(MSG_EXCESSIVE, "random from internal pool",  in random_get_bytes()
195 			wpa_printf(MSG_ERROR, "random: No entropy available "  in random_get_bytes()
196 				   "for generating strong random bytes");  in random_get_bytes()
199 		wpa_hexdump_key(MSG_EXCESSIVE, "random from crypto module",  in random_get_bytes()
208 	wpa_hexdump_key(MSG_EXCESSIVE, "mixed random", buf, len);  in random_get_bytes()
246 				   "random: getrandom() not supported, falling back to /dev/random");  in random_pool_ready()
249 				   "random: no data from getrandom(): %s",  in random_pool_ready()
258 		fd = open("/dev/random", O_RDONLY | O_NONBLOCK);  in random_pool_ready()
261 				   "random: Cannot open /dev/random: %s",  in random_pool_ready()
270 				   "random: Cannot read from /dev/random: %s",  in random_pool_ready()
277 	wpa_printf(MSG_DEBUG, "random: Got %u/%u random bytes", (unsigned) res,  in random_pool_ready()
288 	wpa_printf(MSG_INFO, "random: Only %u/%u bytes of strong "  in random_pool_ready()
289 		   "random data available",  in random_pool_ready()
294 		wpa_printf(MSG_INFO, "random: Allow operation to proceed "  in random_pool_ready()
299 	wpa_printf(MSG_INFO, "random: Not enough entropy pool available for "  in random_pool_ready()
312 	wpa_printf(MSG_DEBUG, "random: Mark internal entropy pool to be "  in random_mark_pool_ready()
342 		wpa_printf(MSG_ERROR, "random: Cannot read from /dev/random: "  in random_read_fd()
347 	wpa_printf(MSG_DEBUG, "random: Got %u/%u bytes from /dev/random",  in random_read_fd()
376 		wpa_printf(MSG_DEBUG, "random: Invalid entropy file %s",  in random_read_entropy()
385 	wpa_printf(MSG_DEBUG, "random: Added entropy from %s "  in random_read_entropy()
406 		wpa_printf(MSG_ERROR, "random: Could not open entropy file %s "  in random_write_entropy()
417 		wpa_printf(MSG_ERROR, "random: Could not write entropy data "  in random_write_entropy()
422 	wpa_printf(MSG_DEBUG, "random: Updated entropy file %s "  in random_write_entropy()
448 				   "random: getrandom() support available");  in random_init()
454 	random_fd = open("/dev/random", O_RDONLY | O_NONBLOCK);  in random_init()
456 		wpa_printf(MSG_ERROR, "random: Cannot open /dev/random: %s",  in random_init()
460 	wpa_printf(MSG_DEBUG, "random: Trying to read entropy from "  in random_init()
461 		   "/dev/random");  in random_init()