bool r6 = r >> 1 & 0x1;
bool r7 = r & 0x1;
- bool z0 = (r0 & r2) ^ (r1 & ~r3) ^ (r2 | r4);
+ bool z0 = (r0 & r2) ^ (r1 & !r3) ^ (r2 | r4);
bool z1 = (r0 | r2) ^ ( r5 | r7) ^ r1 ^ r6 ^ x ^ y;
- bool z2 = (r3 & ~r5) ^ (r4 & r6 ) ^ r7 ^ x;
+ bool z2 = (r3 & !r5) ^ (r4 & r6 ) ^ r7 ^ x;
// The three bitz z0.. z1 are packed into a uint8_t:
// 00000ZZZ
void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4])
{
uint8_t cc_nr[13] = { 0 };
- uint8_t div_key[8];
+ uint8_t div_key[8];
//cc_nr=(uint8_t*)malloc(length+1);
- memcpy(cc_nr,cc_nr_p,12);
- memcpy(div_key,div_key_p,8);
+ memcpy(cc_nr, cc_nr_p, 12);
+ memcpy(div_key, div_key_p, 8);
reverse_arraybytes(cc_nr,12);
- BitstreamIn bitstream = {cc_nr,12 * 8,0};
- uint8_t dest []= {0,0,0,0,0,0,0,0};
- BitstreamOut out = { dest, sizeof(dest)*8, 0 };
- MAC(div_key,bitstream, out);
- //The output MAC must also be reversed
- reverse_arraybytes(dest, sizeof(dest));
- memcpy(mac, dest, 4);
+ BitstreamIn bitstream = {cc_nr, 12 * 8, 0};
+ uint8_t dest []= {0,0,0,0,0,0,0,0};
+ BitstreamOut out = { dest, sizeof(dest)*8, 0 };
+ MAC(div_key,bitstream, out);
+ //The output MAC must also be reversed
+ reverse_arraybytes(dest, sizeof(dest));
+ memcpy(mac, dest, 4);
//free(cc_nr);
- return;
+ return;
}
-void doMAC_N(uint8_t *cc_nr_p,uint8_t cc_nr_size, uint8_t *div_key_p, uint8_t mac[4])
+void doMAC_N(uint8_t *address_data_p, uint8_t address_data_size, uint8_t *div_key_p, uint8_t mac[4])
{
- uint8_t *cc_nr;
- uint8_t div_key[8];
- cc_nr = (uint8_t*) malloc(cc_nr_size);
-
- memcpy(cc_nr,cc_nr_p,cc_nr_size);
- memcpy(div_key,div_key_p,8);
-
- reverse_arraybytes(cc_nr,cc_nr_size);
- BitstreamIn bitstream = {cc_nr,cc_nr_size * 8,0};
- uint8_t dest []= {0,0,0,0,0,0,0,0};
- BitstreamOut out = { dest, sizeof(dest)*8, 0 };
- MAC(div_key,bitstream, out);
- //The output MAC must also be reversed
- reverse_arraybytes(dest, sizeof(dest));
- memcpy(mac, dest, 4);
- free(cc_nr);
- return;
+ uint8_t *address_data;
+ uint8_t div_key[8];
+ address_data = (uint8_t*) malloc(address_data_size);
+
+ memcpy(address_data, address_data_p, address_data_size);
+ memcpy(div_key, div_key_p, 8);
+
+ reverse_arraybytes(address_data, address_data_size);
+ BitstreamIn bitstream = {address_data, address_data_size * 8, 0};
+ uint8_t dest []= {0,0,0,0,0,0,0,0};
+ BitstreamOut out = { dest, sizeof(dest)*8, 0 };
+ MAC(div_key, bitstream, out);
+ //The output MAC must also be reversed
+ reverse_arraybytes(dest, sizeof(dest));
+ memcpy(mac, dest, 4);
+ free(address_data);
+ return;
}
#ifndef ON_DEVICE