/// <summary>
/// Authenticate access to a block
/// </summary>
/// <param name="keyAuth">Authorization type (Key A or Key B)</param>
/// <param name="block">Block number</param>
/// <param name="key">Key bytes value</param>
/// <returns>Result of authentication</returns>
public async Task <bool> Authenticate(MifareKeyAuth keyAuth, byte block, byte[] key)
{
byte[] dataOut = new byte[8 + id.Length]; // 8 -> fixed part (key type, block number, key bytes value)
// key auth command (type A or B)
dataOut[0] = (keyAuth == MifareKeyAuth.KeyA) ? MIFARE_AUTH_KEYA : MIFARE_AUTH_KEYB;
// block number
dataOut[1] = block;
// key value
Array.Copy(key, 0, dataOut, 2, key.Length);
// tag ID
for (int i = 8; i < dataOut.Length; i++)
{
dataOut[i] = id[i - 8];
}
byte[] dataIn = await reader.WriteRead(dataOut);
if (dataIn == null)
{
return(false);
}
// check error code byte (pn532um.pdf, pag. 67)
return(dataIn[0] == 0x00);
}
/// <summary>
/// Authenticate access to a block
/// </summary>
/// <param name="keyAuth">Authorization type (Key A or Key B)</param>
/// <param name="block">Block number</param>
/// <param name="key">Key bytes value</param>
/// <returns>Result of authentication</returns>
public bool Authenticate(MifareKeyAuth keyAuth, byte block, byte[] key)
{
byte[] dataOut = new byte[8 + id.Length]; // 8 -> fixed part (key type, block number, key bytes value)
// key auth command (type A or B)
dataOut[0] = (keyAuth == MifareKeyAuth.KeyA) ? MIFARE_AUTH_KEYA : MIFARE_AUTH_KEYB;
// block number
dataOut[1] = block;
// key value
Array.Copy(key, 0, dataOut, 2, key.Length);
// tag ID
for (int i = 8; i < dataOut.Length; i++)
dataOut[i] = this.id[i - 8];
byte[] dataIn = this.reader.WriteRead(dataOut);
// check error code byte (pn532um.pdf, pag. 67)
return (dataIn[0] == 0x00);
}
