312 |
|
|
313 |
addr.sun_family = AF_UNIX; |
addr.sun_family = AF_UNIX; |
314 |
memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET)); |
memcpy(addr.sun_path, EGD_SOCKET, sizeof(EGD_SOCKET)); |
315 |
if (connect(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) |
if (connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) |
316 |
goto err; |
goto err; |
317 |
|
|
318 |
/* PRNGD and EGD use a simple communications protocol */ |
/* PRNGD and EGD use a simple communications protocol */ |
319 |
buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */ |
buf[0] = 1; /* Non-blocking (similar to /dev/urandom) */ |
320 |
buf[1] = 32; /* Number of requested random bytes */ |
buf[1] = 32; /* Number of requested random bytes */ |
321 |
if (write(fd, buf, 2) != 2) |
if (write(fd, buf, 2) != 2) |
322 |
goto err; |
goto err; |
323 |
|
|
324 |
if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */ |
if ((read(fd, buf, 1) != 1) || (buf[0] == 0)) /* Available? */ |
325 |
goto err; |
goto err; |
326 |
|
|
327 |
if (read(fd, buf, 32) != 32) |
if (read(fd, buf, 32) != 32) |
329 |
|
|
330 |
ret = True; |
ret = True; |
331 |
|
|
332 |
err: |
err: |
333 |
close(fd); |
close(fd); |
334 |
return ret; |
return ret; |
335 |
} |
} |
362 |
#endif |
#endif |
363 |
|
|
364 |
/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
/* Otherwise use whatever entropy we can gather - ideas welcome. */ |
365 |
r = (uint32 *)random; |
r = (uint32 *) random; |
366 |
r[0] = (getpid()) | (getppid() << 16); |
r[0] = (getpid()) | (getppid() << 16); |
367 |
r[1] = (getuid()) | (getgid() << 16); |
r[1] = (getuid()) | (getgid() << 16); |
368 |
r[2] = times(&tmsbuf); /* system uptime (clocks) */ |
r[2] = times(&tmsbuf); /* system uptime (clocks) */ |
374 |
|
|
375 |
/* Hash both halves with MD5 to obscure possible patterns */ |
/* Hash both halves with MD5 to obscure possible patterns */ |
376 |
MD5_Init(&md5); |
MD5_Init(&md5); |
377 |
MD5_Update(&md5, random, 16); |
MD5_Update(&md5, random, 16); |
378 |
MD5_Final(random, &md5); |
MD5_Final(random, &md5); |
379 |
MD5_Update(&md5, random+16, 16); |
MD5_Update(&md5, random + 16, 16); |
380 |
MD5_Final(random+16, &md5); |
MD5_Final(random + 16, &md5); |
381 |
} |
} |
382 |
|
|
383 |
/* malloc; exit if out of memory */ |
/* malloc; exit if out of memory */ |