int main(int argc, char* argv[])
{
char *text = "TESTWY";
unsigned char plaintext[8], cipher[8] = {0}, buffor[8] = {0};
memcpy(plaintext, text, 8);
des_ctx *ctx = des_make_ctx((unsigned char*)text);
printf("plaintext: "); print_hex(plaintext, 8);
des_crypt(ctx, plaintext, cipher, DES_ENCRYPT);
printf("cipher: "); print_hex(cipher, 8);
des_crypt(ctx, cipher, buffor, DES_DECRYPT);
printf("decrypted: "); print_hex(buffor, 8);
return 0;
}
/* my_crypt returns malloc'ed data */
static char *my_crypt(const char *key, const char *salt)
{
/* First, check if we are supposed to be using the MD5 replacement
* instead of DES... */
if (salt[0] == '$' && salt[1] == '1' && salt[2] == '$') {
return md5_crypt(xzalloc(MD5_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
}
{
if (!des_cctx)
des_cctx = const_des_init();
des_ctx = des_init(des_ctx, des_cctx);
return des_crypt(des_ctx, xzalloc(DES_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
}
}
/* my_crypt returns malloc'ed data */
static char *my_crypt(const char *key, const char *salt)
{
/* MD5 or SHA? */
if (salt[0] == '$' && salt[1] && salt[2] == '$') {
if (salt[1] == '1')
return md5_crypt(xzalloc(MD5_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
#if ENABLE_USE_BB_CRYPT_SHA
if (salt[1] == '5' || salt[1] == '6')
return sha_crypt((char*)key, (char*)salt);
#endif
}
if (!des_cctx)
des_cctx = const_des_init();
des_ctx = des_init(des_ctx, des_cctx);
return des_crypt(des_ctx, xzalloc(DES_OUT_BUFSIZE), (unsigned char*)key, (unsigned char*)salt);
}
void desPerformOn(uint8_t *plainData) {
uint8_t desSchedule_buffer[16][6];
uint8_t encryptedDataBuffer_ptr[DES_BLOCK_SIZE];
//set crypto mode
CryptoMode_enum crypto_mode = ((g_Des_mode == DES_ENCRYPTION) ? ENCRYPT : DECRYPT);
//setup buffer for keys
des_key_setup(g_DES_KEY_ptr, desSchedule_buffer, crypto_mode);
//apply to data
des_crypt(plainData, encryptedDataBuffer_ptr, desSchedule_buffer);
//replace plain data by encrypted data
memcpy(plainData, encryptedDataBuffer_ptr, DES_BLOCK_SIZE);
//debug print
//for (int i=0; i<DES_BLOCK_SIZE;i++) printf("%02X ",plainData[i]);
}
char *crypt(const char *buf, const char *salt)
{
return(des_crypt(buf, salt));
}
