/* bcal-basic.c */
/*
- This file is part of the AVR-Crypto-Lib.
- Copyright (C) 2009 Daniel Otte (daniel.otte@rub.de)
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2009 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 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.
+ 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/>.
-*/
+ 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 "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((PGM_VOID_P)pgm_read_word(&(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 = pgm_read_byte(cipher_descriptor->flags);
- init_fpt.initvoid = (void_fpt)(pgm_read_word(&(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(pgm_read_word(&(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;
+ const void *key, uint16_t keysize_b, bcgen_ctx_t *ctx)
+{
+ if (!is_valid_keysize_P((PGM_VOID_P) pgm_read_word(&(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 = pgm_read_byte(cipher_descriptor->flags);
+ init_fpt.initvoid =
+ (void_fpt) (pgm_read_word(&(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(pgm_read_word(&(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)(pgm_read_word(&(ctx->desc_ptr->free)));
- if(free_fpt)
- free_fpt((ctx->ctx));
- free(ctx->ctx);
+void bcal_cipher_free(bcgen_ctx_t *ctx)
+{
+ if (!ctx)
+ return;
+ bc_free_fpt free_fpt;
+ free_fpt = (bc_free_fpt) (pgm_read_word(&(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)pgm_read_word(&(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_enc(void *block, const bcgen_ctx_t *ctx)
+{
+ bc_enc_fpt enc_fpt;
+ enc_fpt.encvoid = (void_fpt) pgm_read_word(&(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)pgm_read_word(&(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 pgm_read_word(&(desc->blocksize_b));
+void bcal_cipher_dec(void *block, const bcgen_ctx_t *ctx)
+{
+ bc_dec_fpt dec_fpt;
+ dec_fpt.decvoid = (void_fpt) pgm_read_word(&(ctx->desc_ptr->dec.decvoid));
+ if (!dec_fpt.decvoid) {
+ /* very bad error, no deciphering function specified */
+ return;
+ }
+ dec_fpt.dec1(block, (ctx->ctx));
}
-PGM_VOID_P bcal_cipher_getKeysizeDesc(const bcdesc_t *desc){
- return (PGM_VOID_P)pgm_read_word(&(desc->valid_keysize_desc));
+uint16_t bcal_cipher_getBlocksize_b(const bcdesc_t *desc)
+{
+ return pgm_read_word(&(desc->blocksize_b));
}
+PGM_VOID_P bcal_cipher_getKeysizeDesc(const bcdesc_t *desc) {
+ return (PGM_VOID_P)pgm_read_word(&(desc->valid_keysize_desc));
+}
projects / avr-crypto-lib.git / blobdiff