security/nss/lib/freebl/sysrand.c@6474c204b198 (annotated)
security/nss/lib/freebl/sysrand.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifdef FREEBL_NO_DEPEND |
| michael@0 | 6 | #include "stubs.h" |
| michael@0 | 7 | #endif |
| michael@0 | 8 | |
| michael@0 | 9 | #include "seccomon.h" |
| michael@0 | 10 | |
| michael@0 | 11 | #ifndef XP_WIN |
| michael@0 | 12 | static size_t rng_systemFromNoise(unsigned char *dest, size_t maxLen); |
| michael@0 | 13 | #endif |
| michael@0 | 14 | |
| michael@0 | 15 | #if defined(XP_UNIX) || defined(XP_BEOS) |
| michael@0 | 16 | #include "unix_rand.c" |
| michael@0 | 17 | #endif |
| michael@0 | 18 | #ifdef XP_WIN |
| michael@0 | 19 | #include "win_rand.c" |
| michael@0 | 20 | #endif |
| michael@0 | 21 | #ifdef XP_OS2 |
| michael@0 | 22 | #include "os2_rand.c" |
| michael@0 | 23 | #endif |
| michael@0 | 24 | |
| michael@0 | 25 | #ifndef XP_WIN |
| michael@0 | 26 | /* |
| michael@0 | 27 | * Normal RNG_SystemRNG() isn't available, use the system noise to collect |
| michael@0 | 28 | * the required amount of entropy. |
| michael@0 | 29 | */ |
| michael@0 | 30 | static size_t |
| michael@0 | 31 | rng_systemFromNoise(unsigned char *dest, size_t maxLen) |
| michael@0 | 32 | { |
| michael@0 | 33 | size_t retBytes = maxLen; |
| michael@0 | 34 | |
| michael@0 | 35 | while (maxLen) { |
| michael@0 | 36 | size_t nbytes = RNG_GetNoise(dest, maxLen); |
| michael@0 | 37 | |
| michael@0 | 38 | PORT_Assert(nbytes != 0); |
| michael@0 | 39 | |
| michael@0 | 40 | dest += nbytes; |
| michael@0 | 41 | maxLen -= nbytes; |
| michael@0 | 42 | |
| michael@0 | 43 | /* some hw op to try to introduce more entropy into the next |
| michael@0 | 44 | * RNG_GetNoise call */ |
| michael@0 | 45 | rng_systemJitter(); |
| michael@0 | 46 | } |
| michael@0 | 47 | return retBytes; |
| michael@0 | 48 | } |
| michael@0 | 49 | #endif |
