]> git.cryptolib.org Git - arm-crypto-lib.git/blobdiff - bcal-ctr.c
updated build system
[arm-crypto-lib.git] / bcal-ctr.c
diff --git a/bcal-ctr.c b/bcal-ctr.c
deleted file mode 100644 (file)
index ec1b1d4..0000000
+++ /dev/null
@@ -1,95 +0,0 @@
-/* bcal-ctr.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-ctr.h"
-#include "memxor.h"
-
-static void increment_be(void* block, uint8_t size_B){
-       uint16_t c=1;
-       do{
-               --size_B;
-               c += ((uint8_t*)block)[size_B];
-               ((uint8_t*)block)[size_B] = (uint8_t)c;
-               c>>=8;
-       }while(size_B);
-}
-
-uint8_t bcal_ctr_init(const bcdesc_t* desc, const void* key, uint16_t keysize_b, inc_fp_t inc_func, bcal_ctr_ctx_t* ctx){
-       ctx->desc = (bcdesc_t*)desc;
-       if(inc_func){
-               ctx->inc_func = inc_func;
-       }else{
-               ctx->inc_func = increment_be;
-       }
-       ctx->blocksize_B = (bcal_cipher_getBlocksize_b(desc)+7)/8;
-       ctx->in_block=malloc(ctx->blocksize_B);
-       if(ctx->in_block==NULL){
-                       return 0x11;
-       }
-       return bcal_cipher_init(desc, key, keysize_b, &(ctx->cctx));
-}
-
-void bcal_ctr_free(bcal_ctr_ctx_t* ctx){
-       free(ctx->in_block);
-       bcal_cipher_free(&(ctx->cctx));
-}
-
-void bcal_ctr_loadIV(const void* iv, bcal_ctr_ctx_t* ctx){
-       if(iv){
-               memcpy(ctx->in_block, iv, ctx->blocksize_B);
-       }
-}
-
-void bcal_ctr_encNext(void* block, bcal_ctr_ctx_t* ctx){
-       uint8_t tmp[ctx->blocksize_B];
-       memcpy(tmp, ctx->in_block, ctx->blocksize_B);
-       bcal_cipher_enc(tmp, &(ctx->cctx));
-       memxor(block, tmp, ctx->blocksize_B);
-       ctx->inc_func(ctx->in_block, ctx->blocksize_B);
-}
-
-void bcal_ctr_decNext(void* block, bcal_ctr_ctx_t* ctx){
-       bcal_ctr_encNext(block, ctx);
-}
-
-void bcal_ctr_encMsg(const void* iv, void* msg, uint32_t msg_len_b, bcal_ctr_ctx_t* ctx){
-       bcal_ctr_loadIV(iv, ctx);
-       uint16_t blocksize_b;
-       blocksize_b = ctx->blocksize_B*8;
-       while(msg_len_b>blocksize_b){
-               bcal_ctr_encNext(msg, ctx);
-               msg_len_b -= blocksize_b;
-               msg = (uint8_t*)msg + ctx->blocksize_B;
-       }
-       uint8_t tmp[ctx->blocksize_B];
-       memcpy(tmp, ctx->in_block, ctx->blocksize_B);
-       bcal_cipher_enc(tmp, &(ctx->cctx));
-       ctx->inc_func(ctx->in_block, ctx->blocksize_B);
-       tmp[msg_len_b/8] = 0xff00>>(msg_len_b&7);
-       memxor(msg, tmp, (msg_len_b+7)/8);
-}
-
-void bcal_ctr_decMsg(const void* iv, void* msg, uint32_t msg_len_b, bcal_ctr_ctx_t* ctx){
-       bcal_ctr_encMsg(iv, msg, msg_len_b, ctx);
-}
-