remove omac

[zpackage] / libtomcrypt / src / mac / omac / omac_init.c

diff --git a/libtomcrypt/src/mac/omac/omac_init.c b/libtomcrypt/src/mac/omac/omac_init.c
deleted file mode 100644 (file)
index 55de2a6..0000000
--- a/libtomcrypt/src/mac/omac/omac_init.c
+++ /dev/null
@@ -1,99 +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 omac_init.c
-  OMAC1 support, initialize state, by Tom St Denis
-*/
-
-
-#ifdef LTC_OMAC
-
-/**
-   Initialize an OMAC state
-   @param omac    The OMAC state to initialize
-   @param cipher  The index of the desired cipher
-   @param key     The secret key
-   @param keylen  The length of the secret key (octets)
-   @return CRYPT_OK if successful
-*/
-int omac_init(omac_state *omac, int cipher, const unsigned char *key, unsigned long keylen)
-{
-   int err, x, y, mask, msb, len;
-
-   LTC_ARGCHK(omac != NULL);
-   LTC_ARGCHK(key  != NULL);
-
-   /* schedule the key */
-   if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
-      return err;
-   }
-
-#ifdef LTC_FAST
-   if (cipher_descriptor[cipher].block_length % sizeof(LTC_FAST_TYPE)) {
-       return CRYPT_INVALID_ARG;
-   }
-#endif
-
-   /* now setup the system */
-   switch (cipher_descriptor[cipher].block_length) {
-       case 8:  mask = 0x1B;
-                len  = 8;
-                break;
-       case 16: mask = 0x87;
-                len  = 16;
-                break;
-       default: return CRYPT_INVALID_ARG;
-   }
-
-   if ((err = cipher_descriptor[cipher].setup(key, keylen, 0, &omac->key)) != CRYPT_OK) {
-      return err;
-   }
-
-   /* ok now we need Lu and Lu^2 [calc one from the other] */
-
-   /* first calc L which is Ek(0) */
-   zeromem(omac->Lu[0], cipher_descriptor[cipher].block_length);
-   if ((err = cipher_descriptor[cipher].ecb_encrypt(omac->Lu[0], omac->Lu[0], &omac->key)) != CRYPT_OK) {
-      return err;
-   }
-
-   /* now do the mults, whoopy! */
-   for (x = 0; x < 2; x++) {
-       /* if msb(L * u^(x+1)) = 0 then just shift, otherwise shift and xor constant mask */
-       msb = omac->Lu[x][0] >> 7;
-
-       /* shift left */
-       for (y = 0; y < (len - 1); y++) {
-           omac->Lu[x][y] = ((omac->Lu[x][y] << 1) | (omac->Lu[x][y+1] >> 7)) & 255;
-       }
-       omac->Lu[x][len - 1] = ((omac->Lu[x][len - 1] << 1) ^ (msb ? mask : 0)) & 255;
-
-       /* copy up as require */
-       if (x == 0) {
-          XMEMCPY(omac->Lu[1], omac->Lu[0], sizeof(omac->Lu[0]));
-       }
-   }
-
-   /* setup state */
-   omac->cipher_idx = cipher;
-   omac->buflen     = 0;
-   omac->blklen     = len;
-   zeromem(omac->prev,  sizeof(omac->prev));
-   zeromem(omac->block, sizeof(omac->block));
-
-   return CRYPT_OK;
-}
-
-#endif
-
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */