public static bool unlock_card(NFC.nfc_device pnd)
{
byte[] abtRx = new byte[264];
int szRx;
/*
* if (magic2)
* {
* //printf("Don't use R/W with this card, this is not required!\n");
* return false;
* }*/
byte[] abtHalt = { 0x50, 0x00, 0x00, 0x00 };
// special unlock command
byte[] abtUnlock1 = { 0x40 };
byte[] abtUnlock2 = { 0x43 };
// Configure the CRC
if (NFC.nfc_device_set_property_bool(pnd, NFC.nfc_property.NP_HANDLE_CRC, false) < 0)
{
NFC.nfc_perror(pnd, "nfc_configure");
return(false);
}
// Use raw send/receive methods
if (NFC.nfc_device_set_property_bool(pnd, NFC.nfc_property.NP_EASY_FRAMING, false) < 0)
{
NFC.nfc_perror(pnd, "nfc_configure");
return(false);
}
ISO14443Subr.iso14443a_crc_append(abtHalt, 2);
szRx = NFC.nfc_initiator_transceive_bytes(pnd, abtHalt, 4, abtRx, abtRx.Length, 0);//transmit_bytes(abtHalt, 4);
// now send unlock
if ((szRx = NFC.nfc_initiator_transceive_bits(pnd, abtUnlock1, 7, null, abtRx, abtRx.Length, null)) < 0)//!transmit_bits(abtUnlock1, 7)
{
//printf("unlock failure!\n");
return(false);
}
if ((szRx = NFC.nfc_initiator_transceive_bits(pnd, abtUnlock2, 1, null, abtRx, abtRx.Length, null)) < 0)//(!transmit_bytes(abtUnlock2, 1))
{
//printf("unlock failure!\n");
return(false);
}
// reset reader
// Configure the CRC
if (NFC.nfc_device_set_property_bool(pnd, NFC.nfc_property.NP_HANDLE_CRC, true) < 0)
{
NFC.nfc_perror(pnd, "nfc_device_set_property_bool");
return(false);
}
// Switch off raw send/receive methods
if (NFC.nfc_device_set_property_bool(pnd, NFC.nfc_property.NP_EASY_FRAMING, true) < 0)
{
NFC.nfc_perror(pnd, "nfc_device_set_property_bool");
return(false);
}
return(true);
}
transmit_bits(byte[] pbtTx, int szTxBits)//const const
{
// Show transmitted command
//printf("Sent bits: ");
//print_hex_bits(pbtTx, szTxBits);
// Transmit the bit frame command, we don't use the arbitrary parity feature
if ((szRxBits = NFC.nfc_initiator_transceive_bits(pnd, pbtTx, szTxBits, null, abtRx, abtRx.Length, null)) < 0)
{
return(false);
}
// Show received answer
//printf("Received bits: ");
//print_hex_bits(abtRx, szRxBits);
// Succesful transfer
return(true);
}