updated build system

[arm-crypto-lib.git] / bcal-cmac.c

diff --git a/bcal-cmac.c b/bcal-cmac.c
deleted file mode 100644 (file)
index 32ddfeb..0000000
--- a/bcal-cmac.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/* bcal-omac.c */
-/*
-    This file is part of the ARM-Crypto-Lib.
-    Copyright (C) 2006-2010  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/>.
-*/
-
-
-#include <stdint.h>
-#include <string.h>
-#include "bcal-basic.h"
-#include "bcal-cmac.h"
-#include "memxor.h"
-
-
-static uint8_t left_shift_be_block(void* block, uint8_t blocksize_B){
-       uint8_t c1=0, c2;
-       do{
-               --blocksize_B;
-               c2 = (((uint8_t*)block)[blocksize_B])>>7;
-               (((uint8_t*)block)[blocksize_B]) <<= 1;
-               (((uint8_t*)block)[blocksize_B]) |= c1;
-               c1 = c2;
-       }while(blocksize_B);
-       return c1;
-}
-
-static const uint8_t const_128 = 0x87;
-static const uint8_t const_64  = 0x1b;
-
-uint8_t bcal_cmac_init(const bcdesc_t* desc, const void* key, uint16_t keysize_b, bcal_cmac_ctx_t* ctx){
-       uint8_t r;
-       ctx->desc = (bcdesc_t*)desc;
-       ctx->blocksize_B = bcal_cipher_getBlocksize_b(desc)/8;
-       if (ctx->blocksize_B!=128/8 && ctx->blocksize_B!=64/8){
-               return 0x13;
-       }
-       ctx->accu = malloc(ctx->blocksize_B);
-       if(ctx->accu==NULL){
-               return 0x14;
-       }
-       ctx->k1 = malloc(ctx->blocksize_B);
-       if(ctx->k1==NULL){
-               return 0x15;
-       }
-       ctx->k2 = malloc(ctx->blocksize_B);
-       if(ctx->k2==NULL){
-               return 0x16;
-       }
-       ctx->lastblock = malloc(ctx->blocksize_B);
-       if(ctx->lastblock==NULL){
-               return 0x17;
-       }
-       r = bcal_cipher_init(desc, key, keysize_b, &(ctx->cctx));
-       if(r){
-               return r;
-       }
-       if(ctx->blocksize_B==128/8){
-               r = const_128;
-       }else{
-               r = const_64;
-       }
-       /* subkey computation */
-       memset(ctx->accu, 0x00, ctx->blocksize_B);
-       memset(ctx->k1, 0x00, ctx->blocksize_B);
-       bcal_cipher_enc(ctx->k1, &(ctx->cctx));
-       if(left_shift_be_block(ctx->k1, ctx->blocksize_B)){
-               ctx->k1[ctx->blocksize_B-1] ^= r;
-       }
-       memcpy(ctx->k2, ctx->k1, ctx->blocksize_B);
-       if(left_shift_be_block(ctx->k2, ctx->blocksize_B)){
-               ctx->k2[ctx->blocksize_B-1] ^= r;
-       }
-       ctx->last_set=0;
-       return 0;
-}
-
-void bcal_cmac_free(bcal_cmac_ctx_t* ctx){
-       free(ctx->accu);
-       free(ctx->k1);
-       free(ctx->k2);
-       bcal_cipher_free(&(ctx->cctx));
-}
-
-void bcal_cmac_nextBlock (bcal_cmac_ctx_t* ctx, const void* block){
-       if(ctx->last_set){
-               memxor(ctx->accu, ctx->lastblock, ctx->blocksize_B);
-               bcal_cipher_enc(ctx->accu, &(ctx->cctx));
-       }
-       memcpy(ctx->lastblock, block, ctx->blocksize_B);
-       ctx->last_set=1;
-}
-
-
-void bcal_cmac_lastBlock(bcal_cmac_ctx_t* ctx, const void* block, uint16_t length_b){
-       uint16_t blocksize_b;
-       blocksize_b = ctx->blocksize_B*8;
-       while(length_b>=blocksize_b){
-               bcal_cmac_nextBlock(ctx, block);
-               block = (uint8_t*)block + ctx->blocksize_B;
-               length_b -= blocksize_b;
-       }
-       if(ctx->last_set==0){
-               memxor(ctx->accu, block, (length_b+7)/8);
-               memxor(ctx->accu, ctx->k2, ctx->blocksize_B);
-               ctx->accu[length_b/8] ^= 0x80>>(length_b&7);
-       }else{
-               if(length_b==0){
-                       memxor(ctx->accu, ctx->lastblock, ctx->blocksize_B);
-                       memxor(ctx->accu, ctx->k1, ctx->blocksize_B);
-               }else{
-                       memxor(ctx->accu, ctx->lastblock, ctx->blocksize_B);
-                       bcal_cipher_enc(ctx->accu, &(ctx->cctx));
-                       memxor(ctx->accu, block, (length_b+7)/8);
-                       memxor(ctx->accu, ctx->k2, ctx->blocksize_B);
-                       ctx->accu[length_b/8] ^= 0x80>>(length_b&7);
-               }
-       }
-       bcal_cipher_enc(ctx->accu, &(ctx->cctx));
-}
-
-void bcal_cmac_ctx2mac(void* dest, uint16_t length_b, const bcal_cmac_ctx_t* ctx){
-       memcpy(dest, ctx->accu, length_b/8);
-       if(length_b&7){
-               ((uint8_t*)dest)[length_b/8] &= 0xff>>(length_b&7);
-               ((uint8_t*)dest)[length_b/8] |= (0xff00>>(length_b&7))&(ctx->accu[length_b/8]);
-       }
-}
-
-void bcal_cmac(void* dest, uint16_t out_length_b, const void* block, uint32_t length_b, bcal_cmac_ctx_t* ctx){
-       uint16_t blocksize_b;
-       blocksize_b = ctx->blocksize_B*8;
-       while(length_b>blocksize_b){
-               bcal_cmac_nextBlock(ctx, block);
-               block = (uint8_t*)block + ctx->blocksize_B;
-               length_b -= blocksize_b;
-       }
-       bcal_cmac_lastBlock(ctx, block, length_b);
-       bcal_cmac_ctx2mac(dest, out_length_b, ctx);
-}