updated build system

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

diff --git a/bcal/bcal-basic.c b/bcal/bcal-basic.c
new file mode 100644 (file)
index 0000000..5cb5536
--- /dev/null
+++ b/bcal/bcal-basic.c
@@ -0,0 +1,92 @@
+/* bcal-basic.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 <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include "blockcipher_descriptor.h"
+#include "keysize_descriptor.h"
+
+uint8_t bcal_cipher_init(const bcdesc_t* cipher_descriptor,
+                         const void* key, uint16_t keysize_b, bcgen_ctx_t* ctx){
+       if(!is_valid_keysize_P(cipher_descriptor->valid_keysize_desc, keysize_b)){
+               return 1;
+       }
+       uint8_t flags;
+       bc_init_fpt init_fpt;
+       ctx->desc_ptr = (bcdesc_t*)cipher_descriptor;
+       ctx->keysize  = keysize_b;
+       flags = cipher_descriptor->flags;
+       init_fpt.initvoid = (void_fpt)(cipher_descriptor->init.initvoid);
+       if(init_fpt.initvoid == NULL){
+               if(!(ctx->ctx = malloc((keysize_b+7)/8)))
+                       return 2;
+               memcpy(ctx->ctx, key, (keysize_b+7)/8);
+               return 0;
+       }
+       if(!(ctx->ctx = malloc(cipher_descriptor->ctxsize_B)))
+               return 3;
+       if((flags&BC_INIT_TYPE)==BC_INIT_TYPE_1){
+               init_fpt.init1((void*)key, (ctx->ctx));
+       }else{
+               init_fpt.init2((void*)key, keysize_b, (ctx->ctx));
+       }
+       return 0;
+}
+
+void bcal_cipher_free(bcgen_ctx_t* ctx){
+       if(!ctx)
+               return;
+       bc_free_fpt free_fpt;
+       free_fpt = (bc_free_fpt)(ctx->desc_ptr->free);
+       if(free_fpt)
+               free_fpt((ctx->ctx));
+       free(ctx->ctx);
+}
+
+void bcal_cipher_enc(void* block, const bcgen_ctx_t* ctx){
+       bc_enc_fpt enc_fpt;
+       enc_fpt.encvoid = (void_fpt)(ctx->desc_ptr->enc.encvoid);
+       if(!enc_fpt.encvoid){
+               /* very bad error, no enciphering function specified */
+               return;
+       }
+       enc_fpt.enc1(block, (ctx->ctx));
+       
+}
+
+void bcal_cipher_dec(void* block, const bcgen_ctx_t* ctx){
+       bc_dec_fpt dec_fpt;
+       dec_fpt.decvoid = (void_fpt)(ctx->desc_ptr->dec.decvoid);
+       if(!dec_fpt.decvoid){
+               /* very bad error, no deciphering function specified */
+               return;
+       }
+       dec_fpt.dec1(block, (ctx->ctx));
+}
+
+uint16_t bcal_cipher_getBlocksize_b(const bcdesc_t* desc){
+       return (desc->blocksize_b);
+}
+
+const void* bcal_cipher_getKeysizeDesc(const bcdesc_t* desc){
+       return (desc->valid_keysize_desc);
+}
+
+