libtomcrypt/cbc_getiv.c

31 lines
704 B
C
Raw Normal View History

2004-05-31 02:36:47 +00:00
/* 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"
#ifdef CBC
int cbc_getiv(unsigned char *IV, unsigned long *len, symmetric_CBC *cbc)
{
_ARGCHK(IV != NULL);
_ARGCHK(len != NULL);
_ARGCHK(cbc != NULL);
if ((unsigned long)cbc->blocklen > *len) {
return CRYPT_BUFFER_OVERFLOW;
}
memcpy(IV, cbc->IV, cbc->blocklen);
*len = cbc->blocklen;
return CRYPT_OK;
}
#endif