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Tested by changing the master key from the default to a custom value

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This commit is contained in:
Blaine Forbort 2014-12-21 22:59:24 -08:00
parent 0673263230
commit 4e2e4bcf9b
1 changed files with 46 additions and 0 deletions
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46
armsrc/mifaredesfire.c
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@ -306,6 +306,52 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain
} }
} }
/*
//Change the selected key to a new value.
cmd[0] = 0xc4;
cmd[1] = keyno;
uint8_t first,second;
uint8_t newKey[16] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
uint8_t buff1[8] = {0x00};
uint8_t buff2[8] = {0x00};
uint8_t buff3[8] = {0x00};
memcpy(buff1,newKey, 8);
memcpy(buff2,newKey + 8, 8);
ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second);
memcpy(buff3, &first, 1);
memcpy(buff3 + 1, &second, 1);
des_dec(&buff1, &buff1, skey->data);
for (int x = 0; x < 8; x++) {
buff2[x] = buff2[x] ^ buff1[x];
}
des_dec(&buff2, &buff2, skey->data);
for (int x = 0; x < 8; x++) {
buff3[x] = buff3[x] ^ buff2[x];
}
des_dec(&buff3, &buff3, skey->data);
memcpy(cmd+2,buff1,8);
memcpy(cmd+10,buff2,8);
memcpy(cmd+18,buff3,8);
// The command always times out on the first attempt, this will retry until a response
// is recieved.
len = 0;
while(!len) {
len = DesfireAPDU(cmd,26,resp);
}
*/
OnSuccess(); OnSuccess();
cmd_send(CMD_ACK,1,0,0,skey->data,8); cmd_send(CMD_ACK,1,0,0,skey->data,8);