/* 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://libtomcrypt.com */#include "tomcrypt.h"/**   @file ofb_getiv.c   OFB implementation, get IV, Tom St Denis*/#ifdef LTC_OFB_MODE/**   Get the current initial vector   @param IV   [out] The destination of the initial vector   @param len  [in/out]  The max size and resulting size of the initial vector   @param ofb  The OFB state   @return CRYPT_OK if successful*/int ofb_getiv(unsigned char *IV, unsigned long *len, symmetric_OFB *ofb){   LTC_ARGCHK(IV  != NULL);   LTC_ARGCHK(len != NULL);   LTC_ARGCHK(ofb != NULL);   if ((unsigned long)ofb->blocklen > *len) {      *len = ofb->blocklen;      return CRYPT_BUFFER_OVERFLOW;   }   XMEMCPY(IV, ofb->IV, ofb->blocklen);   *len = ofb->blocklen;   return CRYPT_OK;}#endif/* $Source: /cvs/libtom/libtomcrypt/src/modes/ofb/ofb_getiv.c,v $ *//* $Revision: 1.6 $ *//* $Date: 2006/06/29 01:51:34 $ */