block_chipher.c

/** @file 
* @brief     
*
* @copyright InfoTeCS. All rights reserved.
*/

#include <stdio.h>
#include <memory.h>
#include <malloc.h>
#include <stdlib.h>

#include "28147_14.h"
#include "28147_89.h"
#include "block_chipher.h"

/** @brief    */
#define INFOTECS_ASSERT(e) typedef char __C_ASSERT__[(e)?1:-1]

/** @brief      "" */
#define textLen14 sizeof(kSeltTestGost14PlainText)/sizeof(kSeltTestGost14PlainText[0])
/** @brief      28147-89 */
#define textLen89 sizeof(kSeltTestGost89PlainText)/sizeof(kSeltTestGost89PlainText[0])

/** @brief   "" */
const unsigned char kAlg14 = 1;

/** @brief   28147-89 */
const unsigned char kAlg89 = 2;

/** @brief     */
typedef int (DLL_IMPORT *pEncrypt)(unsigned char* plainText, unsigned char* chipherText, unsigned char* keys, printout_byte_array print, printout_uint_array print_uint);

/** @brief     */
typedef int (DLL_IMPORT *pDecrypt)(unsigned char* chipherText, unsigned char* plainText, unsigned char* keys, printout_byte_array print, printout_uint_array print_uint);

/** @brief    ECB */
static int SelfTestGost14Ecb();

/** @brief    ECB */
static int SelfTestGost89Ecb();

/** @brief    CTR */
static int SelfTestGost14Ctr();

/** @brief    CTR */
static int SelfTestGost89Ctr();

/** @brief    OFB */
static int SelfTestGost14Ofb();

/** @brief    OFB */
static int SelfTestGost89Ofb();

/** @brief    CBC */
static int SelfTestGost14Cbc();

/** @brief    CBC */
static int SelfTestGost89Cbc();

/** @brief    CFB */
static int SelfTestGost14Cfb();

/** @brief    CFB */
static int SelfTestGost89Cfb();

/** @brief     */
static int SelfTestGost14Imit();

/** @brief     */
static int SelfTestGost89Imit();

/** @brief    1  */
static void ShifttLeftOne(unsigned char *r, size_t length);

/** @brief  ECB */  
typedef struct 
{
     unsigned char Alg; /**<   */
     unsigned char* Keys; /**<  */ 
     unsigned int BlockLen; /**<   */ 
     printout_byte_array PrintByteArray; /**<   */
     printout_uint_array PrintUIntArray; /**<   */
     pEncrypt EncryptFunc; /**<   */
     pDecrypt DecryptFunc; /**<   */
} Context_ecb;

/** @brief  CTR */
typedef struct 
{
     unsigned char Alg; /**<   */
     unsigned char* Counter; /**<  */
     unsigned char* Keys; /**<  */ 
     size_t S; /**<   */
     size_t BlockLen;  /**<   */ 
     printout_byte_array PrintByteArray; /**<   */
     printout_uint_array PrintUIntArray; /**<   */
     pEncrypt EncryptFunc; /**<   */
     unsigned char *tmpblock; /**<   */
} Context_ctr;

/** @brief  OFB */
typedef struct 
{
     unsigned char Alg; /**<   */
     unsigned char* IV; /**<  */
     unsigned char* Keys;  /**<  */ 
     size_t M; /**<   */
     size_t S; /**<  S */
     size_t BlockLen; /**<   */ 
     printout_byte_array PrintByteArray; /**<   */
     printout_uint_array PrintUIntArray; /**<   */
     pEncrypt EncryptFunc; /**<   */
     pDecrypt DecryptFunc; /**<   */
     unsigned char *tmpblock;  /**<   */
     unsigned char* nextIV; /**<     */
} Context_ofb;

/** @brief  CFB */
typedef struct 
{
     unsigned char Alg; /**<   */
     unsigned char* IV; /**<  */
     unsigned char* Keys; /**<  */ 
     size_t M; /**<   */
     size_t S; /**<  S */
     size_t BlockLen; /**<   */
     printout_byte_array PrintByteArray; /**<   */
     printout_uint_array PrintUIntArray; /**<   */
     pEncrypt EncryptFunc; /**<   */
     pDecrypt DecryptFunc; /**<   */
     unsigned char *tmpblock; /**<   */
     unsigned char* nextIV; /**<     */
} Context_cfb;

/** @brief  CBC */
typedef struct 
{
     unsigned char Alg; /**<   */
     unsigned char* IV; /**<  */
     unsigned char* Keys; /**<  */
     size_t BlockLen; /**<   */
     size_t M; /**<   */
     printout_byte_array PrintByteArray; /**<   */
     printout_uint_array PrintUIntArray; /**<   */
     pEncrypt EncryptFunc; /**<   */
     pDecrypt DecryptFunc; /**<   */
     unsigned char* nextIV; /**<     */
     unsigned char* tempIV; /**<      */
     unsigned char *tmpblock; /**<   */
} Context_cbc;

/** @brief   */
typedef struct 
{
     unsigned char Alg; /**<   */
     unsigned char* Keys; /**<  */
     unsigned char* K1; /**<   K1 */
     unsigned char* K2; /**<   K2 */
     unsigned char* B; /**<   B */
     unsigned char* R; /**<   R */
     unsigned char* C; /**<   C */
     unsigned char* LastBlock; /**<   */
     size_t S; /**<  S */
     size_t BlockLen; /**<   */
     size_t LastBlockSize; /**<    */
     int isFistBlock; /**<    */
     printout_byte_array PrintByteArray; /**<   */
     printout_uint_array PrintUIntArray; /**<   */
     pEncrypt EncryptFunc; /**<   */
     unsigned char *tmpblock; /**<   */
     unsigned char *resimit; /**<  */
} Context_imit;

static int init_ecb_14_impl(unsigned char *key, void* ctx, printout_byte_array print, printout_uint_array print_uint)
{
     Context_ecb* context = 0;
     INFOTECS_ASSERT(sizeof(Context_ecb)<=kEcb14ContextLen);

     if(!ctx || !key)
          return -1;

     context = (Context_ecb*)ctx;

     context->Alg = kAlg14;
     context->EncryptFunc = Encrypt_14;
     context->DecryptFunc = Decrypt_14;
     context->BlockLen = kBlockLen14;

     context->PrintByteArray = print;
     context->PrintUIntArray = print_uint;

     context->Keys = (unsigned char*)malloc(10 * kBlockLen14);
     if( !context->Keys )
          return -1;
     memset(context->Keys, 0, 10 * kBlockLen14);

     ExpandKey(key, context->Keys, print);
     return 0;
}