The Tor Browser / file comparison
comparison: security/nss/lib/freebl/secrng.h
security/nss/lib/freebl/secrng.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:70ea91577894 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef _SECRNG_H_ | |
| 6 #define _SECRNG_H_ | |
| 7 /* | |
| 8 * secrng.h - public data structures and prototypes for the secure random | |
| 9 * number generator | |
| 10 */ | |
| 11 | |
| 12 /******************************************/ | |
| 13 /* | |
| 14 ** Random number generation. A cryptographically strong random number | |
| 15 ** generator. | |
| 16 */ | |
| 17 | |
| 18 #include "blapi.h" | |
| 19 | |
| 20 /* the number of bytes to read from the system random number generator */ | |
| 21 #define SYSTEM_RNG_SEED_COUNT 1024 | |
| 22 | |
| 23 SEC_BEGIN_PROTOS | |
| 24 | |
| 25 /* | |
| 26 ** The following functions are provided by the security library | |
| 27 ** but are differently implemented for the UNIX, Win, and OS/2 | |
| 28 ** versions | |
| 29 */ | |
| 30 | |
| 31 /* | |
| 32 ** Get the "noisiest" information available on the system. | |
| 33 ** The amount of data returned depends on the system implementation. | |
| 34 ** It will not exceed maxbytes, but may be (much) less. | |
| 35 ** Returns number of noise bytes copied into buf, or zero if error. | |
| 36 */ | |
| 37 extern size_t RNG_GetNoise(void *buf, size_t maxbytes); | |
| 38 | |
| 39 /* | |
| 40 ** RNG_SystemInfoForRNG should be called before any use of SSL. It | |
| 41 ** gathers up the system specific information to help seed the | |
| 42 ** state of the global random number generator. | |
| 43 */ | |
| 44 extern void RNG_SystemInfoForRNG(void); | |
| 45 | |
| 46 /* | |
| 47 ** Use the contents (and stat) of a file to help seed the | |
| 48 ** global random number generator. | |
| 49 */ | |
| 50 extern void RNG_FileForRNG(const char *filename); | |
| 51 | |
| 52 /* | |
| 53 ** Get maxbytes bytes of random data from the system random number | |
| 54 ** generator. | |
| 55 ** Returns the number of bytes copied into buf -- maxbytes if success | |
| 56 ** or zero if error. | |
| 57 ** Errors: | |
| 58 ** PR_NOT_IMPLEMENTED_ERROR There is no system RNG on the platform. | |
| 59 ** SEC_ERROR_NEED_RANDOM The system RNG failed. | |
| 60 */ | |
| 61 extern size_t RNG_SystemRNG(void *buf, size_t maxbytes); | |
| 62 | |
| 63 SEC_END_PROTOS | |
| 64 | |
| 65 #endif /* _SECRNG_H_ */ |
