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