| /* 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 lrw_getiv.c |
| LRW_MODE implementation, Retrieve the current IV, Tom St Denis |
| */ |
| |
| #ifdef LTC_LRW_MODE |
| |
| /** |
| Get the IV for LRW |
| @param IV [out] The IV, must be 16 octets |
| @param len Length ... must be at least 16 :-) |
| @param lrw The LRW state to read |
| @return CRYPT_OK if successful |
| */ |
| int lrw_getiv(unsigned char *IV, unsigned long *len, symmetric_LRW *lrw) |
| { |
| LTC_ARGCHK(IV != NULL); |
| LTC_ARGCHK(len != NULL); |
| LTC_ARGCHK(lrw != NULL); |
| if (*len < 16) { |
| *len = 16; |
| return CRYPT_BUFFER_OVERFLOW; |
| } |
| |
| XMEMCPY(IV, lrw->IV, 16); |
| *len = 16; |
| return CRYPT_OK; |
| } |
| |
| #endif |
| /* $Source: /cvs/libtom/libtomcrypt/src/modes/lrw/lrw_getiv.c,v $ */ |
| /* $Revision: 1.9 $ */ |
| /* $Date: 2006/06/29 01:53:13 $ */ |