+++ /dev/null
-/* 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"
-
-/**
- Source donated by Elliptic Semiconductor Inc (www.ellipticsemi.com) to the LibTom Projects
-*/
-
-#ifdef LTC_XTS_MODE
-
-/** Start XTS mode
- @param cipher The index of the cipher to use
- @param key1 The encrypt key
- @param key2 The tweak encrypt key
- @param keylen The length of the keys (each) in octets
- @param num_rounds The number of rounds for the cipher (0 == default)
- @param xts [out] XTS structure
- Returns CRYPT_OK upon success.
-*/
-int xts_start(int cipher, const unsigned char *key1, const unsigned char *key2, unsigned long keylen, int num_rounds,
- symmetric_xts *xts)
-{
- int err;
-
- /* check inputs */
- LTC_ARGCHK(key1 != NULL);
- LTC_ARGCHK(key2 != NULL);
- LTC_ARGCHK(xts != NULL);
-
- /* check if valid */
- if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
- return err;
- }
-
- if (cipher_descriptor[cipher].block_length != 16) {
- return CRYPT_INVALID_ARG;
- }
-
- /* schedule the two ciphers */
- if ((err = cipher_descriptor[cipher].setup(key1, keylen, num_rounds, &xts->key1)) != CRYPT_OK) {
- return err;
- }
- if ((err = cipher_descriptor[cipher].setup(key2, keylen, num_rounds, &xts->key2)) != CRYPT_OK) {
- return err;
- }
- xts->cipher = cipher;
-
- return err;
-}
-
-#endif
-
-/* ref: $Format:%D$ */
-/* git commit: $Format:%H$ */
-/* commit time: $Format:%ai$ */