]> git.cryptolib.org Git - arm-crypto-lib.git/blobdiff - bcal-eax.c
updated build system
[arm-crypto-lib.git] / bcal-eax.c
diff --git a/bcal-eax.c b/bcal-eax.c
deleted file mode 100644 (file)
index 72d68bd..0000000
+++ /dev/null
@@ -1,119 +0,0 @@
-/* bca-eax.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 "bcal-basic.h"
-#include "blockcipher_descriptor.h"
-#include "bcal-cmac.h"
-#include "bcal-ctr.h"
-#include "bcal-eax.h"
-#include "memxor.h"
-
-uint8_t bcal_eax_init(const bcdesc_t* desc, const void* key, uint16_t keysize_b, bcal_eax_ctx_t* ctx){
-       uint8_t r;
-       ctx->blocksize_B = (bcal_cipher_getBlocksize_b(desc)+7)/8;
-       ctx->nonce = malloc(ctx->blocksize_B);
-       if(ctx->nonce==NULL){
-               return 0x81;
-       }
-       r = bcal_cmac_init(desc, key, keysize_b, &(ctx->ctag));
-       if(r){
-               return r;
-       }
-       r = bcal_cmac_init(desc, key, keysize_b, &(ctx->htag));
-       if(r){
-               return (r|0x10);
-       }
-       r = bcal_cmac_init(desc, key, keysize_b, &(ctx->ntag));
-       if(r){
-               return (r|0x20);
-       }
-       r = bcal_ctr_init(desc, key, keysize_b, NULL, &(ctx->cipher));
-       if(r){
-               return (r|0x30);
-       }
-       ctx->header_set=0;
-       uint8_t tmp[ctx->blocksize_B];
-       memset(tmp, 0, ctx->blocksize_B);
-       bcal_cmac_nextBlock(&(ctx->ntag), tmp);
-       tmp[ctx->blocksize_B-1]=1;
-       bcal_cmac_nextBlock(&(ctx->htag), tmp);
-       tmp[ctx->blocksize_B-1]=2;
-       bcal_cmac_nextBlock(&(ctx->ctag), tmp);
-       return 0;
-}
-
-void bcal_eax_free(bcal_eax_ctx_t* ctx){
-       bcal_ctr_free(&(ctx->cipher));
-       bcal_cmac_free(&(ctx->ctag));
-       bcal_cmac_free(&(ctx->htag));
-       bcal_cmac_free(&(ctx->ntag));
-       free(ctx->nonce);
-}
-
-void bcal_eax_loadNonce(const void* nonce, uint16_t length_b, bcal_eax_ctx_t* ctx){
-       bcal_cmac_lastBlock(&(ctx->ntag), nonce, length_b);
-       bcal_cmac_ctx2mac(ctx->nonce, ctx->blocksize_B*8, &(ctx->ntag));
-       bcal_ctr_loadIV(ctx->nonce, &(ctx->cipher));
-}
-
-void bcal_eax_addNextHeader(const void* header, bcal_eax_ctx_t* ctx){
-       bcal_cmac_nextBlock(&(ctx->htag), header);
-}
-
-void bcal_eax_addLastHeader(const void* header, uint16_t length_b, bcal_eax_ctx_t* ctx){
-       bcal_cmac_lastBlock(&(ctx->htag), header, length_b);
-       ctx->header_set = 1;
-}
-
-void bcal_eax_encNextBlock(void* block, bcal_eax_ctx_t* ctx){
-       bcal_ctr_encNext(block, &(ctx->cipher));
-       bcal_cmac_nextBlock(&(ctx->ctag), block);
-}
-
-void bcal_eax_encLastBlock(void* block, uint16_t length_b, bcal_eax_ctx_t* ctx){
-       bcal_ctr_encMsg(NULL, block, length_b, &(ctx->cipher));
-       bcal_cmac_lastBlock(&(ctx->ctag), block, length_b);
-}
-
-void bcal_eax_decNextBlock(void* block, bcal_eax_ctx_t* ctx){
-       bcal_cmac_nextBlock(&(ctx->ctag), block);
-       bcal_ctr_decNext(block, &(ctx->cipher));
-}
-
-void bcal_eax_decLastBlock(void* block, uint16_t length_b, bcal_eax_ctx_t* ctx){
-       bcal_cmac_lastBlock(&(ctx->ctag), block, length_b);
-       bcal_ctr_decMsg(NULL, block, length_b, &(ctx->cipher));
-}
-
-void bcal_eax_ctx2tag(void* dest, uint16_t length_b, bcal_eax_ctx_t* ctx){
-       uint8_t tmp[ctx->blocksize_B];
-       if(ctx->header_set==0){
-               bcal_cmac_lastBlock(&(ctx->htag), NULL, 0);
-       }
-
-       bcal_cmac_ctx2mac(tmp, ctx->blocksize_B*8, &(ctx->htag));
-       memxor(ctx->nonce, tmp, ctx->blocksize_B);
-
-       bcal_cmac_ctx2mac(tmp, ctx->blocksize_B*8, &(ctx->ctag));
-       memxor(ctx->nonce, tmp, ctx->blocksize_B);
-       memcpy(dest, ctx->nonce, (length_b+7)/8);
-}
-