X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_start.c;fp=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_start.c;h=0000000000000000000000000000000000000000;hp=e13d3bdd3624c28409033d3387bac8367217f4df;hb=d6319f7ea0a76de91bc01d9734d235b494c40198;hpb=5299b2ad7c4ba7a82ee1bcb1953663f63e8e9a14

diff --git a/libtomcrypt/src/modes/lrw/lrw_start.c b/libtomcrypt/src/modes/lrw/lrw_start.c
deleted file mode 100644
index e13d3bd..0000000
--- a/libtomcrypt/src/modes/lrw/lrw_start.c
+++ /dev/null
@@ -1,101 +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_start.c
-   LRW_MODE implementation, start mode, Tom St Denis
-*/
-
-#ifdef LTC_LRW_MODE
-
-/**
-  Initialize the LRW context
-  @param cipher        The cipher desired, must be a 128-bit block cipher
-  @param IV            The index value, must be 128-bits
-  @param key           The cipher key
-  @param keylen        The length of the cipher key in octets
-  @param tweak         The tweak value (second key), must be 128-bits
-  @param num_rounds    The number of rounds for the cipher (0 == default)
-  @param lrw           [out] The LRW state
-  @return CRYPT_OK on success.
-*/
-int lrw_start(               int   cipher,
-              const unsigned char *IV,
-              const unsigned char *key,       int keylen,
-              const unsigned char *tweak,
-                             int  num_rounds,
-                   symmetric_LRW *lrw)
-{
-   int           err;
-#ifdef LTC_LRW_TABLES
-   unsigned char B[16];
-   int           x, y, z, t;
-#endif
-
-   LTC_ARGCHK(IV    != NULL);
-   LTC_ARGCHK(key   != NULL);
-   LTC_ARGCHK(tweak != NULL);
-   LTC_ARGCHK(lrw   != NULL);
-
-#ifdef LTC_FAST
-   if (16 % sizeof(LTC_FAST_TYPE)) {
-      return CRYPT_INVALID_ARG;
-   }
-#endif
-
-   /* is cipher valid? */
-   if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
-      return err;
-   }
-   if (cipher_descriptor[cipher].block_length != 16) {
-      return CRYPT_INVALID_CIPHER;
-   }
-
-   /* schedule key */
-   if ((err = cipher_descriptor[cipher].setup(key, keylen, num_rounds, &lrw->key)) != CRYPT_OK) {
-      return err;
-   }
-   lrw->cipher = cipher;
-
-   /* copy the IV and tweak */
-   XMEMCPY(lrw->tweak, tweak, 16);
-
-#ifdef LTC_LRW_TABLES
-   /* setup tables */
-   /* generate the first table as it has no shifting (from which we make the other tables) */
-   zeromem(B, 16);
-   for (y = 0; y < 256; y++) {
-        B[0] = y;
-        gcm_gf_mult(tweak, B, &lrw->PC[0][y][0]);
-   }
-
-   /* now generate the rest of the tables based the previous table */
-   for (x = 1; x < 16; x++) {
-      for (y = 0; y < 256; y++) {
-         /* now shift it right by 8 bits */
-         t = lrw->PC[x-1][y][15];
-         for (z = 15; z > 0; z--) {
-             lrw->PC[x][y][z] = lrw->PC[x-1][y][z-1];
-         }
-         lrw->PC[x][y][0]  = gcm_shift_table[t<<1];
-         lrw->PC[x][y][1] ^= gcm_shift_table[(t<<1)+1];
-      }
-   }
-#endif
-
-   /* generate first pad */
-   return lrw_setiv(IV, 16, lrw);
-}
-
-
-#endif
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */