static void
reinit_pmt (Table * t, int sz)
{
clear_tbl (t);
init_pmt (t, sz);
}
/*
*DES加密
*输入：plainText 16位明文（16进制）， key 16位密钥（16进制）
*输出：加密后的结果 解密后的结果 16位明文（16进制）
*/
void deDES(char* ciperText,char* key,char* result){
printf("解密数据开始！\n");
char* dataL=(char*) malloc(32*sizeof(char));//数据左半部分
char* dataR=(char*) malloc(32*sizeof(char));//数据右半部分
char* dataL_cp=(char*) malloc(32*sizeof(char));//数据左半部分拷贝
char* dataR_cp=(char*) malloc(32*sizeof(char));//数据右半部分拷贝
char* data_48=(char*) malloc(48*sizeof(char));//48位中间数据
char* data_64=(char*) malloc(64*sizeof(char));//64位初始数据初始置换后数据
char* data_64_I=(char*) malloc(64*sizeof(char));//64位初始数据
//16个48位密钥空间
char** keys =(char**) malloc(16*sizeof(char*));
for(int i=0;i<16;i++){
*(keys+i) = (char*) malloc(48*sizeof(char));
}
//得到16个48位密钥
gen_key(key,keys);
//16进制明文转换成2进制
hex2Binary(ciperText,16,data_64_I);
//初始置换
init_pmt(data_64_I,data_64);
strCopy(data_64,dataL,32);
strCopy(data_64+32,dataR,32);
//轮变换，循环16轮
for(int rc=1;rc<=16;rc++){
//printf("第%d轮数据：",rc);
//扩展置换E
pmt_E(dataR,data_48);
strCopy(dataL,dataL_cp,32);
strCopy(dataR,dataL,32);
//异或
for(int i = 0 ;i < 48;i++){
data_48[i] = data_48[i]^keys[16-rc][i];
}
//S盒置换/选择
pmt_S(data_48,dataR_cp);
//P置换
pmt_P(dataR_cp,dataR);
//异或
for(int i = 0 ;i < 32;i++){
dataR[i] = dataL_cp[i]^dataR[i];
}
binary2Hex(dataL,32);//打印左半部分
printf(" ");
binary2Hex(dataR,32);//打印右半部分
printf("\n");
}
//32位互换
strCopy(dataR,data_64_I,32);
strCopy(dataL,data_64_I+32,32);
//逆初始置换
init_pmt_reverse(data_64_I,data_64);
printf("明文为: ");
binary2Hex(data_64,result,64);
free(data_64);
free(dataL);
free(dataR);
free(dataL_cp);
free(dataR_cp);
free(data_48);
free(data_64_I);
free(keys);
}
/*
* Starting point for MMC card init.
*/
int mmc_attach_mmc(struct mmc_host *host)
{
int err;
u32 ocr;
BUG_ON(!host);
WARN_ON(!host->claimed);
mt6575_mmc_info( "+%s--Liu\n", __func__);
err = mmc_send_op_cond(host, 0, &ocr);
if (err)
return err;
mmc_attach_bus_ops(host);
if (host->ocr_avail_mmc)
host->ocr_avail = host->ocr_avail_mmc;
/*
* We need to get OCR a different way for SPI.
*/
if (mmc_host_is_spi(host)) {
err = mmc_spi_read_ocr(host, 1, &ocr);
if (err)
goto err;
}
/*
* Sanity check the voltages that the card claims to
* support.
*/
if (ocr & 0x7F) {
printk(KERN_WARNING "%s: card claims to support voltages "
"below the defined range. These will be ignored.\n",
mmc_hostname(host));
ocr &= ~0x7F;
}
host->ocr = mmc_select_voltage(host, ocr);
/*
* Can we support the voltage of the card?
*/
if (!host->ocr) {
mt6575_mmc_info("%s: error, ocr is NULL--Liu\n", __func__);
err = -EINVAL;
goto err;
}
/*
* Detect and init the card.
*/
err = mmc_init_card(host, host->ocr, NULL);
if (err)
goto err;
mmc_release_host(host);
err = mmc_add_card(host->card);
#ifdef MTK_EMMC_SUPPORT
err = init_pmt();
host->card_init_complete(host);
#endif
mmc_claim_host(host);
if (err)
goto remove_card;
mt6575_mmc_info( "-%s--Liu\n", __func__);
return 0;
remove_card:
mmc_release_host(host);
mmc_remove_card(host->card);
mmc_claim_host(host);
host->card = NULL;
err:
mmc_detach_bus(host);
printk(KERN_ERR "%s: error %d whilst initialising MMC card\n",
mmc_hostname(host), err);
return err;
}
