andre@0: /* This Source Code Form is subject to the terms of the Mozilla Public
andre@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
andre@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
andre@0: 
andre@0: #ifdef FREEBL_NO_DEPEND
andre@0: #include "stubs.h"
andre@0: #endif
andre@0: 
andre@0: #include "seccomon.h"
andre@0: 
andre@0: #ifndef XP_WIN
andre@0: static size_t rng_systemFromNoise(unsigned char *dest, size_t maxLen);
andre@0: #endif
andre@0: 
andre@0: #if defined(XP_UNIX) || defined(XP_BEOS)
andre@0: #include "unix_rand.c"
andre@0: #endif
andre@0: #ifdef XP_WIN
andre@0: #include "win_rand.c"
andre@0: #endif
andre@0: #ifdef XP_OS2
andre@0: #include "os2_rand.c"
andre@0: #endif
andre@0: 
andre@0: #ifndef XP_WIN
andre@0: /*
andre@0:  * Normal RNG_SystemRNG() isn't available, use the system noise to collect
andre@0:  * the required amount of entropy.
andre@0:  */
andre@0: static size_t 
andre@0: rng_systemFromNoise(unsigned char *dest, size_t maxLen) 
andre@0: {
andre@0:    size_t retBytes = maxLen;
andre@0: 
andre@0:    while (maxLen) {
andre@0: 	size_t nbytes = RNG_GetNoise(dest, maxLen);
andre@0: 
andre@0: 	PORT_Assert(nbytes != 0);
andre@0: 
andre@0: 	dest += nbytes;
andre@0: 	maxLen -= nbytes;
andre@0: 
andre@0: 	/* some hw op to try to introduce more entropy into the next
andre@0: 	 * RNG_GetNoise call */
andre@0: 	rng_systemJitter();
andre@0:    }
andre@0:    return retBytes;
andre@0: }
andre@0: #endif