remove ltc encauth eax

[zpackage] / libtomcrypt / src / encauth / eax / eax_init.c

diff --git a/libtomcrypt/src/encauth/eax/eax_init.c b/libtomcrypt/src/encauth/eax/eax_init.c
deleted file mode 100644 (file)
index 154d7a9..0000000
--- a/libtomcrypt/src/encauth/eax/eax_init.c
+++ /dev/null
@@ -1,142 +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.
- */
-
-/**
-   @file eax_init.c
-   EAX implementation, initialized EAX state, by Tom St Denis
-*/
-#include "tomcrypt.h"
-
-#ifdef LTC_EAX_MODE
-
-/**
-   Initialized an EAX state
-   @param eax       [out] The EAX 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)
-   @param nonce     The use-once nonce for the session
-   @param noncelen  The length of the nonce (octets)
-   @param header    The header for the EAX state
-   @param headerlen The header length (octets)
-   @return CRYPT_OK if successful
-*/
-int eax_init(eax_state *eax, int cipher,
-             const unsigned char *key,    unsigned long keylen,
-             const unsigned char *nonce,  unsigned long noncelen,
-             const unsigned char *header, unsigned long headerlen)
-{
-   unsigned char *buf;
-   int           err, blklen;
-   omac_state    *omac;
-   unsigned long len;
-
-
-   LTC_ARGCHK(eax   != NULL);
-   LTC_ARGCHK(key   != NULL);
-   LTC_ARGCHK(nonce != NULL);
-   if (headerlen > 0) {
-      LTC_ARGCHK(header != NULL);
-   }
-
-   if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
-      return err;
-   }
-   blklen = cipher_descriptor[cipher].block_length;
-
-   /* allocate ram */
-   buf  = XMALLOC(MAXBLOCKSIZE);
-   omac = XMALLOC(sizeof(*omac));
-
-   if (buf == NULL || omac == NULL) {
-      if (buf != NULL) {
-         XFREE(buf);
-      }
-      if (omac != NULL) {
-         XFREE(omac);
-      }
-      return CRYPT_MEM;
-   }
-
-   /* N = LTC_OMAC_0K(nonce) */
-   zeromem(buf, MAXBLOCKSIZE);
-   if ((err = omac_init(omac, cipher, key, keylen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   /* omac the [0]_n */
-   if ((err = omac_process(omac, buf, blklen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-   /* omac the nonce */
-   if ((err = omac_process(omac, nonce, noncelen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-   /* store result */
-   len = sizeof(eax->N);
-   if ((err = omac_done(omac, eax->N, &len)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   /* H = LTC_OMAC_1K(header) */
-   zeromem(buf, MAXBLOCKSIZE);
-   buf[blklen - 1] = 1;
-
-   if ((err = omac_init(&eax->headeromac, cipher, key, keylen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   /* omac the [1]_n */
-   if ((err = omac_process(&eax->headeromac, buf, blklen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-   /* omac the header */
-   if (headerlen != 0) {
-      if ((err = omac_process(&eax->headeromac, header, headerlen)) != CRYPT_OK) {
-          goto LBL_ERR;
-      }
-   }
-
-   /* note we don't finish the headeromac, this allows us to add more header later */
-
-   /* setup the CTR mode */
-   if ((err = ctr_start(cipher, eax->N, key, keylen, 0, CTR_COUNTER_BIG_ENDIAN, &eax->ctr)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   /* setup the LTC_OMAC for the ciphertext */
-   if ((err = omac_init(&eax->ctomac, cipher, key, keylen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   /* omac [2]_n */
-   zeromem(buf, MAXBLOCKSIZE);
-   buf[blklen-1] = 2;
-   if ((err = omac_process(&eax->ctomac, buf, blklen)) != CRYPT_OK) {
-      goto LBL_ERR;
-   }
-
-   err = CRYPT_OK;
-LBL_ERR:
-#ifdef LTC_CLEAN_STACK
-   zeromem(buf,  MAXBLOCKSIZE);
-   zeromem(omac, sizeof(*omac));
-#endif
-
-   XFREE(omac);
-   XFREE(buf);
-
-   return err;
-}
-
-#endif
-
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */