129 read_all(int fd, unsigned char *buf, size_t count)  in read_all()  argument
135 		result = read(fd, buf+numread, count-numread);  in read_all()
155 	unsigned char buf[ADD_ENTROPY];  in arc4_seed_win32()  local
165 	if (!CryptGenRandom(provider, sizeof(buf), buf))  in arc4_seed_win32()
167 	arc4_addrandom(buf, sizeof(buf));  in arc4_seed_win32()
168 	evutil_memclear_(buf, sizeof(buf));  in arc4_seed_win32()
178 	unsigned char buf[ADD_ENTROPY];  in arc4_seed_getrandom()  local
183 	memset(buf, 0, sizeof(buf));  in arc4_seed_getrandom()
185 	for (len = 0; len < sizeof(buf); len += n) {  in arc4_seed_getrandom()
186 		n = sizeof(buf) - len;  in arc4_seed_getrandom()
188 		if (0 == getrandom(&buf[len], n, 0))  in arc4_seed_getrandom()
192 	for (i=0,any_set=0; i<sizeof(buf); ++i) {  in arc4_seed_getrandom()
193 		any_set |= buf[i];  in arc4_seed_getrandom()
198 	arc4_addrandom(buf, sizeof(buf));  in arc4_seed_getrandom()
199 	evutil_memclear_(buf, sizeof(buf));  in arc4_seed_getrandom()
215 	unsigned char buf[ADD_ENTROPY];  in arc4_seed_sysctl_bsd()  local
219 	memset(buf, 0, sizeof(buf));  in arc4_seed_sysctl_bsd()
221 	len = sizeof(buf);  in arc4_seed_sysctl_bsd()
222 	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {  in arc4_seed_sysctl_bsd()
223 		for (len = 0; len < sizeof(buf); len += sizeof(unsigned)) {  in arc4_seed_sysctl_bsd()
225 			if (n + len > sizeof(buf))  in arc4_seed_sysctl_bsd()
226 			    n = len - sizeof(buf);  in arc4_seed_sysctl_bsd()
227 			if (sysctl(mib, 2, &buf[len], &n, NULL, 0) == -1)  in arc4_seed_sysctl_bsd()
232 	for (i=any_set=0; i<sizeof(buf); ++i) {  in arc4_seed_sysctl_bsd()
233 		any_set |= buf[i];  in arc4_seed_sysctl_bsd()
238 	arc4_addrandom(buf, sizeof(buf));  in arc4_seed_sysctl_bsd()
239 	evutil_memclear_(buf, sizeof(buf));  in arc4_seed_sysctl_bsd()
255 	char buf[128];  in arc4_seed_proc_sys_kernel_random_uuid()  local
262 		n = read(fd, buf, sizeof(buf));  in arc4_seed_proc_sys_kernel_random_uuid()
268 			if (EVUTIL_ISXDIGIT_(buf[i])) {  in arc4_seed_proc_sys_kernel_random_uuid()
269 				int nyb = evutil_hex_char_to_int_(buf[i]);  in arc4_seed_proc_sys_kernel_random_uuid()
284 	evutil_memclear_(buf, sizeof(buf));  in arc4_seed_proc_sys_kernel_random_uuid()
295 	unsigned char buf[ADD_ENTROPY];  in arc4_seed_urandom_helper_()  local
302 	n = read_all(fd, buf, sizeof(buf));  in arc4_seed_urandom_helper_()
304 	if (n != sizeof(buf))  in arc4_seed_urandom_helper_()
306 	arc4_addrandom(buf, sizeof(buf));  in arc4_seed_urandom_helper_()
307 	evutil_memclear_(buf, sizeof(buf));  in arc4_seed_urandom_helper_()
490 	unsigned char *buf = buf_;  in arc4random_buf()  local
496 		buf[n] = arc4_getbyte();  in arc4random_buf()