remove f8 lrw xts modes

[zpackage] / libtomcrypt / src / modes / f8 / f8_encrypt.c

diff --git a/libtomcrypt/src/modes/f8/f8_encrypt.c b/libtomcrypt/src/modes/f8/f8_encrypt.c
deleted file mode 100644 (file)
index 058f25a..0000000
--- a/libtomcrypt/src/modes/f8/f8_encrypt.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 f8_encrypt.c
-  F8 implementation, encrypt data, Tom St Denis
-*/
-
-#ifdef LTC_F8_MODE
-
-/**
-  F8 encrypt
-  @param pt     Plaintext
-  @param ct     [out] Ciphertext
-  @param len    Length of plaintext (octets)
-  @param f8     F8 state
-  @return CRYPT_OK if successful
-*/
-int f8_encrypt(const unsigned char *pt, unsigned char *ct, unsigned long len, symmetric_F8 *f8)
-{
-   int           err, x;
-   unsigned char buf[MAXBLOCKSIZE];
-   LTC_ARGCHK(pt != NULL);
-   LTC_ARGCHK(ct != NULL);
-   LTC_ARGCHK(f8 != NULL);
-   if ((err = cipher_is_valid(f8->cipher)) != CRYPT_OK) {
-       return err;
-   }
-
-   /* is blocklen/padlen valid? */
-   if (f8->blocklen < 0 || f8->blocklen > (int)sizeof(f8->IV) ||
-       f8->padlen   < 0 || f8->padlen   > (int)sizeof(f8->IV)) {
-      return CRYPT_INVALID_ARG;
-   }
-
-   zeromem(buf, sizeof(buf));
-
-   /* make sure the pad is empty */
-   if (f8->padlen == f8->blocklen) {
-      /* xor of IV, MIV and blockcnt == what goes into cipher */
-      STORE32H(f8->blockcnt, (buf+(f8->blocklen-4)));
-      ++(f8->blockcnt);
-      for (x = 0; x < f8->blocklen; x++) {
-          f8->IV[x] ^= f8->MIV[x] ^ buf[x];
-      }
-      if ((err = cipher_descriptor[f8->cipher].ecb_encrypt(f8->IV, f8->IV, &f8->key)) != CRYPT_OK) {
-         return err;
-      }
-      f8->padlen = 0;
-   }
-
-#ifdef LTC_FAST
-   if (f8->padlen == 0) {
-      while (len >= (unsigned long)f8->blocklen) {
-         STORE32H(f8->blockcnt, (buf+(f8->blocklen-4)));
-         ++(f8->blockcnt);
-         for (x = 0; x < f8->blocklen; x += sizeof(LTC_FAST_TYPE)) {
-             *(LTC_FAST_TYPE_PTR_CAST(&ct[x])) = *(LTC_FAST_TYPE_PTR_CAST(&pt[x])) ^ *(LTC_FAST_TYPE_PTR_CAST(&f8->IV[x]));
-             *(LTC_FAST_TYPE_PTR_CAST(&f8->IV[x])) ^= *(LTC_FAST_TYPE_PTR_CAST(&f8->MIV[x])) ^ *(LTC_FAST_TYPE_PTR_CAST(&buf[x]));
-         }
-         if ((err = cipher_descriptor[f8->cipher].ecb_encrypt(f8->IV, f8->IV, &f8->key)) != CRYPT_OK) {
-            return err;
-         }
-         len -= x;
-         pt  += x;
-         ct  += x;
-      }
-   }
-#endif
-
-   while (len > 0) {
-       if (f8->padlen == f8->blocklen) {
-          /* xor of IV, MIV and blockcnt == what goes into cipher */
-          STORE32H(f8->blockcnt, (buf+(f8->blocklen-4)));
-          ++(f8->blockcnt);
-          for (x = 0; x < f8->blocklen; x++) {
-              f8->IV[x] ^= f8->MIV[x] ^ buf[x];
-          }
-          if ((err = cipher_descriptor[f8->cipher].ecb_encrypt(f8->IV, f8->IV, &f8->key)) != CRYPT_OK) {
-             return err;
-          }
-          f8->padlen = 0;
-       }
-       *ct++ = *pt++ ^ f8->IV[f8->padlen++];
-       --len;
-   }
-   return CRYPT_OK;
-}
-
-#endif
-
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */