37 lines
901 B
C
37 lines
901 B
C
|
/* 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@iahu.ca, http://libtomcrypt.org
|
||
|
|
*/
|
||
|
|
#include "mycrypt.h"
|
||
|
|
|
||
|
|
int register_prng(const struct _prng_descriptor *prng)
|
||
|
|
{
|
||
|
|
int x;
|
||
|
|
|
||
|
|
_ARGCHK(prng != NULL);
|
||
|
|
|
||
|
|
/* is it already registered? */
|
||
|
|
for (x = 0; x < TAB_SIZE; x++) {
|
||
|
|
if (memcmp(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor)) == 0) {
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* find a blank spot */
|
||
|
|
for (x = 0; x < TAB_SIZE; x++) {
|
||
|
|
if (prng_descriptor[x].name == NULL) {
|
||
|
|
memcpy(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor));
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* no spot */
|
||
|
|
return -1;
|
||
|
|
}
|