TeaSpeak/tomcrypt
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add ltc_rng function pointer

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the idea is to be able to easily provide a plug-in rng for a specific
platform without the need to touch the library.
This commit is contained in:
Steffen Jaeckel 2015-09-08 21:13:17 +02:00
parent a00aba8370
commit fe7c4e3993
3 changed files with 23 additions and 0 deletions
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3
src/headers/tomcrypt_prng.h
View File

@ -193,6 +193,9 @@ unsigned long rng_get_bytes(unsigned char *out,
int rng_make_prng(int bits, int wprng, prng_state *prng, void (*callback)(void)); int rng_make_prng(int bits, int wprng, prng_state *prng, void (*callback)(void));
extern unsigned long (*ltc_rng)(unsigned char *out, unsigned long outlen,
void (*callback)(void));
/* $Source$ */ /* $Source$ */
/* $Revision$ */ /* $Revision$ */

13
src/misc/crypt/crypt_prng_rng_descriptor.c Normal file
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@ -0,0 +1,13 @@
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*
* Tom St Denis, tomstdenis@gmail.com, http://libtom.org
*/
#include "tomcrypt.h"
unsigned long (*ltc_rng)(unsigned char *out, unsigned long outlen, void (*callback)(void));

7
src/prngs/rng_get_bytes.c
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@ -135,6 +135,13 @@ unsigned long rng_get_bytes(unsigned char *out, unsigned long outlen,
LTC_ARGCHK(out != NULL); LTC_ARGCHK(out != NULL);
if (ltc_rng) {
x = ltc_rng(out, outlen, callback);
if (x != 0) {
return x;
}
}
#if defined(_WIN32) || defined(_WIN32_WCE) #if defined(_WIN32) || defined(_WIN32_WCE)
x = rng_win32(out, outlen, callback); if (x != 0) { return x; } x = rng_win32(out, outlen, callback); if (x != 0) { return x; }
#elif defined(LTC_DEVRANDOM) #elif defined(LTC_DEVRANDOM)