uint64_t emlGetKey(int sectorNum, int keyType) {
uint8_t key[6];
uint8_t* emCARD = BigBuf_get_EM_addr();
memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
return bytes_to_num(key, 6);
}
int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
uint8_t* emCARD = BigBuf_get_EM_addr();
uint8_t* data = emCARD + blockNum * 16;
if (emlCheckValBl(blockNum)) {
return 1;
}
memcpy(blReg, data, 4);
*blBlock = data[12];
return 0;
}
int emlCheckValBl(int blockNum) {
uint8_t* emCARD = BigBuf_get_EM_addr();
uint8_t* data = emCARD + blockNum * 16;
if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
(data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
(data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
(data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
(data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
(data[12] != (data[15] ^ 0xff))
)
return 1;
return 0;
}
int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
uint8_t* emCARD = BigBuf_get_EM_addr();
uint8_t* data = emCARD + blockNum * 16;
memcpy(data + 0, &blReg, 4);
memcpy(data + 8, &blReg, 4);
blReg = blReg ^ 0xffffffff;
memcpy(data + 4, &blReg, 4);
data[12] = blBlock;
data[13] = blBlock ^ 0xff;
data[14] = blBlock;
data[15] = blBlock ^ 0xff;
return 0;
}
void emlClearMem(void) {
int b;
const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
uint8_t* emCARD = BigBuf_get_EM_addr();
memset(emCARD, 0, CARD_MEMORY_SIZE);
// fill sectors trailer data
for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
emlSetMem((uint8_t *)trailer, b , 1);
}
// uid
emlSetMem((uint8_t *)uid, 0, 1);
return;
}
void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
uint8_t* emCARD = BigBuf_get_EM_addr();
memcpy(data, emCARD + bytePtr, byteCount);
}
void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
uint8_t* emCARD = BigBuf_get_EM_addr();
memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
}
void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
uint8_t* emCARD = BigBuf_get_EM_addr();
memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
}