X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_process.c;fp=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_process.c;h=0000000000000000000000000000000000000000;hp=0896bc6413284440ac4dbbdb3e1268d6c27df747;hb=d6319f7ea0a76de91bc01d9734d235b494c40198;hpb=5299b2ad7c4ba7a82ee1bcb1953663f63e8e9a14

diff --git a/libtomcrypt/src/modes/lrw/lrw_process.c b/libtomcrypt/src/modes/lrw/lrw_process.c
deleted file mode 100644
index 0896bc6..0000000
--- a/libtomcrypt/src/modes/lrw/lrw_process.c
+++ /dev/null
@@ -1,118 +0,0 @@
-/* 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.
- */
-#include "tomcrypt.h"
-
-/**
-   @file lrw_process.c
-   LRW_MODE implementation, Encrypt/decrypt blocks, Tom St Denis
-*/
-
-#ifdef LTC_LRW_MODE
-
-/**
-  Process blocks with LRW, since decrypt/encrypt are largely the same they share this code.
-  @param pt        The "input" data
-  @param ct        [out] The "output" data
-  @param len       The length of the input, must be a multiple of 128-bits (16 octets)
-  @param mode      LRW_ENCRYPT or LRW_DECRYPT
-  @param lrw       The LRW state
-  @return  CRYPT_OK if successful
-*/
-int lrw_process(const unsigned char *pt, unsigned char *ct, unsigned long len, int mode, symmetric_LRW *lrw)
-{
-   unsigned char prod[16];
-   int           x, err;
-#ifdef LTC_LRW_TABLES
-   int           y;
-#endif
-
-   LTC_ARGCHK(pt  != NULL);
-   LTC_ARGCHK(ct  != NULL);
-   LTC_ARGCHK(lrw != NULL);
-
-   if (len & 15) {
-      return CRYPT_INVALID_ARG;
-   }
-
-   while (len) {
-      /* copy pad */
-      XMEMCPY(prod, lrw->pad, 16);
-
-      /* increment IV */
-      for (x = 15; x >= 0; x--) {
-          lrw->IV[x] = (lrw->IV[x] + 1) & 255;
-          if (lrw->IV[x]) {
-              break;
-          }
-      }
-
-      /* update pad */
-#ifdef LTC_LRW_TABLES
-      /* for each byte changed we undo it's affect on the pad then add the new product */
-      for (; x < 16; x++) {
-#ifdef LTC_FAST
-          for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) {
-              *(LTC_FAST_TYPE_PTR_CAST(lrw->pad + y)) ^= *(LTC_FAST_TYPE_PTR_CAST(&lrw->PC[x][lrw->IV[x]][y])) ^ *(LTC_FAST_TYPE_PTR_CAST(&lrw->PC[x][(lrw->IV[x]-1)&255][y]));
-          }
-#else
-          for (y = 0; y < 16; y++) {
-              lrw->pad[y] ^= lrw->PC[x][lrw->IV[x]][y] ^ lrw->PC[x][(lrw->IV[x]-1)&255][y];
-          }
-#endif
-      }
-#else
-      gcm_gf_mult(lrw->tweak, lrw->IV, lrw->pad);
-#endif
-
-      /* xor prod */
-#ifdef LTC_FAST
-      for (x = 0; x < 16; x += sizeof(LTC_FAST_TYPE)) {
-           *(LTC_FAST_TYPE_PTR_CAST(ct + x)) = *(LTC_FAST_TYPE_PTR_CAST(pt + x)) ^ *(LTC_FAST_TYPE_PTR_CAST(prod + x));
-      }
-#else
-      for (x = 0; x < 16; x++) {
-         ct[x] = pt[x] ^ prod[x];
-      }
-#endif
-
-      /* send through cipher */
-      if (mode == LRW_ENCRYPT) {
-         if ((err = cipher_descriptor[lrw->cipher].ecb_encrypt(ct, ct, &lrw->key)) != CRYPT_OK) {
-            return err;
-         }
-      } else {
-         if ((err = cipher_descriptor[lrw->cipher].ecb_decrypt(ct, ct, &lrw->key)) != CRYPT_OK) {
-            return err;
-         }
-      }
-
-      /* xor prod */
-#ifdef LTC_FAST
-      for (x = 0; x < 16; x += sizeof(LTC_FAST_TYPE)) {
-           *(LTC_FAST_TYPE_PTR_CAST(ct + x)) = *(LTC_FAST_TYPE_PTR_CAST(ct + x)) ^ *(LTC_FAST_TYPE_PTR_CAST(prod + x));
-      }
-#else
-      for (x = 0; x < 16; x++) {
-         ct[x] = ct[x] ^ prod[x];
-      }
-#endif
-
-      /* move to next */
-      pt  += 16;
-      ct  += 16;
-      len -= 16;
-   }
-
-   return CRYPT_OK;
-}
-
-#endif
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */