public bool WriteKeyA(MifareCard card, string data, int sector)
{
if (data.Length == MifareCard.NumberOfCharactersInKey)
{
if (!ReadBlock(card, sector, MifareCard.KeyBlock))
{
return(false);
}
string originalData = card.GetDataFromLastBlockRead();
string newData = data + originalData.Substring(MifareCard.NumberOfCharactersInKey);
if (card.GetCurrentAuthenticatedSector() == sector)
{
return(WriteBlockWithoutAuth(card, newData, sector, MifareCard.KeyBlock)); //block #3 is sector trailer
}
else
{
if (AuthenticateSector(card, sector))
{
return(WriteBlockWithoutAuth(card, newData, sector, MifareCard.KeyBlock));
}
else
{
throw new Exception("Authentication failed for the specified key.");;
}
}
}
else
{
throw new ArgumentOutOfRangeException("The key must be 12 characters.");
}
}
public bool WriteBlock(MifareCard card, byte[] data, int sector, int block)
{
if (data.Length == MifareCard.NumberOfBytesInABlock)
{
if (card.GetCurrentAuthenticatedSector() == sector)
{
return(WriteBlockWithoutAuth(card, data, sector, block));
}
else
{
if (AuthenticateSector(card, sector))
{
return(WriteBlockWithoutAuth(card, data, sector, block));
}
else
{
throw new Exception("Authentication failed for the specified key.");;
}
}
}
else
{
throw new ArgumentOutOfRangeException("Data must be 16 bytes.");
}
}
public bool ReadBlock(MifareCard card, int sector, int block)
{
if (card.GetCurrentAuthenticatedSector() == sector)
{
return(ReadBlockWithoutAuth(card, sector, block));
}
else
{
if (AuthenticateSector(card, sector))
{
return(ReadBlockWithoutAuth(card, sector, block));
}
else
{
return(false);
}
}
}
public bool WriteBlock(MifareCard card, string data, int sector, int block)
{
if (data.Length == MifareCard.NumberOfCharactersInABlock)
{
if (card.GetCurrentAuthenticatedSector() == sector)
{
return(WriteBlockWithoutAuth(card, data, sector, block));
}
else
{
if (AuthenticateSector(card, sector))
{
return(WriteBlockWithoutAuth(card, data, sector, block));
}
else
{
return(false);
}
}
}
return(false);
}
public bool WriteKeys(MifareCard card, string keyA, string keyB, int sector, string accessbits)
{
if (keyA.Length == 12 && keyB.Length == 12)
{
if (!ReadBlock(card, sector, 3))
{
return(false);
}
string keyString = keyA + accessbits + keyB;
if (card.GetCurrentAuthenticatedSector() == sector)
{
WriteBlockWithoutAuth(card, keyString, sector, 3);
}
else
{
if (AuthenticateSector(card, sector))
{
if (WriteBlockWithoutAuth(card, keyString, sector, 3))
{
return(true);
}
else
{
return(false);
}
}
else
{
return(false);
}
}
}
return(false);
}
