"new cbc-mode for bcal; docu comming soon

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

diff --git a/bcal-basic.c b/bcal-basic.c
index d37f40ab41dc7d3dbea05c3c98f5876886795dfc..07ec2da5ea331c02380e758fb58d8f1187054446 100644 (file)
--- a/bcal-basic.c
+++ b/bcal-basic.c
@@ -20,34 +20,34 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>
+#include <avr/pgmspace.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, bcgen_ctx_t* ctx){
-       if(!is_valid_keysize_P((PGM_VOID_P)(pgm_read_word(cipher_descriptor->valid_keysize_desc)),
-                              keysize))
+       if(!is_valid_keysize_P((PGM_VOID_P)pgm_read_word(&(cipher_descriptor->valid_keysize_desc)),
+                              keysize)){
                return 1;
-               
+       }
        uint8_t flags;
        bc_init_fpt init_fpt;
        ctx->desc_ptr = (bcdesc_t*)cipher_descriptor;
        ctx->keysize  = keysize;
        flags = pgm_read_byte(cipher_descriptor->flags);
-       init_fpt.initvoid = (void_fpt)(pgm_read_word(cipher_descriptor->init.initvoid));
+       init_fpt.initvoid = (void_fpt)(pgm_read_word(&(cipher_descriptor->init.initvoid)));
        if(init_fpt.initvoid == NULL){
-               if(!(ctx->ctx = malloc(keysize/8)))
+               if(!(ctx->ctx = malloc((keysize+7)/8)))
                        return 2;
-               memcpy(ctx->ctx, key, keysize/8);
+               memcpy(ctx->ctx, key, (keysize+7)/8);
                return 0;
        }
-       if(!(ctx->ctx = malloc(pgm_read_word(cipher_descriptor->ctxsize_B))))
+       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);
+               init_fpt.init1((void*)key, (ctx->ctx));
        }else{
-               init_fpt.init2((void*)key, keysize, ctx->ctx);
+               init_fpt.init2((void*)key, keysize, (ctx->ctx));
        }
        return 0;
 }
@@ -56,32 +56,39 @@ 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));
+       free_fpt = (bc_free_fpt)(pgm_read_word(&(ctx->desc_ptr->free)));
        if(free_fpt)
-               free_fpt(ctx->ctx);
+               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);
+       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);
+       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);
+       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);
+       dec_fpt.dec1(block, (ctx->ctx));
 }
 
+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));
+}