modified structure

[avr-crypto-lib.git] / xtea.c

diff --git a/xtea.c b/xtea.c
deleted file mode 100644 (file)
index 4605cb0..0000000
--- a/xtea.c
+++ /dev/null
@@ -1,53 +0,0 @@
-/* xtea.c */
-/*
-    This file is part of the AVR-Crypto-Lib.
-    Copyright (C) 2008  Daniel Otte (daniel.otte@rub.de)
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-/** 
- * \file       xtea.c
- * \brief      XTEA implemantation 
- *   copy'n'pasted from http://en.wikipedia.org/wiki/XTEA
- *   and slightly modified
- */
- 
-#include <stdint.h> 
- 
-
-void xtea_enc(void* dest, const void* v, const void* k) {
-    uint8_t i;
-    uint32_t v0=((uint32_t*)v)[0], v1=((uint32_t*)v)[1];
-    uint32_t sum=0, delta=0x9E3779B9;
-    for(i=0; i<32; i++) {
-        v0 += ((v1 << 4 ^ v1 >> 5) + v1) ^ (sum + ((uint32_t*)k)[sum & 3]);
-        sum += delta;
-        v1 += ((v0 << 4 ^ v0 >> 5) + v0) ^ (sum + ((uint32_t*)k)[sum>>11 & 3]);
-    }
-    ((uint32_t*)dest)[0]=v0; ((uint32_t*)dest)[1]=v1;
-}
-
-void xtea_dec(void* dest, const void* v, const void* k) {
-    uint8_t i;
-    uint32_t v0=((uint32_t*)v)[0], v1=((uint32_t*)v)[1];
-    uint32_t sum=0xC6EF3720, delta=0x9E3779B9;
-    for(i=0; i<32; i++) {
-        v1 -= ((v0 << 4 ^ v0 >> 5) + v0) ^ (sum + ((uint32_t*)k)[sum>>11 & 3]);
-        sum -= delta;
-        v0 -= ((v1 << 4 ^ v1 >> 5) + v1) ^ (sum + ((uint32_t*)k)[sum & 3]);
-    }
-    ((uint32_t*)dest)[0]=v0; ((uint32_t*)dest)[1]=v1;
-}
-
-