Home | History | Annotate | Download | only in lrw
      1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
      2  *
      3  * LibTomCrypt is a library that provides various cryptographic
      4  * algorithms in a highly modular and flexible manner.
      5  *
      6  * The library is free for all purposes without any express
      7  * guarantee it works.
      8  *
      9  * Tom St Denis, tomstdenis (at) gmail.com, http://libtomcrypt.com
     10  */
     11 #include "tomcrypt.h"
     12 
     13 /**
     14    @file lrw_encrypt.c
     15    LRW_MODE implementation, Encrypt blocks, Tom St Denis
     16 */
     17 
     18 #ifdef LTC_LRW_MODE
     19 
     20 /**
     21   LRW encrypt blocks
     22   @param pt     The plaintext
     23   @param ct     [out] The ciphertext
     24   @param len    The length in octets, must be a multiple of 16
     25   @param lrw    The LRW state
     26 */
     27 int lrw_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_LRW *lrw)
     28 {
     29    int err;
     30 
     31    LTC_ARGCHK(pt  != NULL);
     32    LTC_ARGCHK(ct  != NULL);
     33    LTC_ARGCHK(lrw != NULL);
     34 
     35    if ((err = cipher_is_valid(lrw->cipher)) != CRYPT_OK) {
     36       return err;
     37    }
     38 
     39    if (cipher_descriptor[lrw->cipher].accel_lrw_encrypt != NULL) {
     40       return cipher_descriptor[lrw->cipher].accel_lrw_encrypt(pt, ct, len, lrw->IV, lrw->tweak, &lrw->key);
     41    }
     42 
     43    return lrw_process(pt, ct, len, LRW_ENCRYPT, lrw);
     44 }
     45 
     46 
     47 #endif
     48 /* $Source: /cvs/libtom/libtomcrypt/src/modes/lrw/lrw_encrypt.c,v $ */
     49 /* $Revision: 1.9 $ */
     50 /* $Date: 2006/06/29 01:53:13 $ */
     51