static void WriteLockInfo(MifareUltralight tag)
{
byte[] pages = tag.ReadPages(0);
if (pages == null || pages.Length != TagUtil.PAGE_SIZE * 4)
{
throw new Exception("Read failed");
}
//lock bits
tag.WritePage(2, new byte[] {
pages[2 * TagUtil.PAGE_SIZE],
pages[(2 * TagUtil.PAGE_SIZE) + 1],
(byte)0x0F,
(byte)0xE0
}
);
//dynamic lock bits. should the last bit be 0xBD accoridng to the nfc docs though:
//Remark: Set all bits marked with RFUI to 0, when writing to the dynamic lock bytes.
tag.WritePage(130, new byte[] { (byte)0x01, (byte)0x00, (byte)0x0F, (byte)0x00 });
//config
tag.WritePage(131, new byte[] { (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x04 });
//config
tag.WritePage(132, new byte[] { (byte)0x5F, (byte)0x00, (byte)0x00, (byte)0x00 });
}
static void WritePassword(MifareUltralight tag)
{
byte[] pages0_1 = tag.ReadPages(0);
if (pages0_1 == null || pages0_1.Length != TagUtil.PAGE_SIZE * 4)
{
throw new Exception("Read failed");
}
byte[] uid = TagUtil.UidFromPages(pages0_1);
byte[] password = TagUtil.Keygen(uid);
tag.WritePage(0x86, new byte[] { (byte)0x80, (byte)0x80, (byte)0, (byte)0 });
tag.WritePage(0x85, password);
}
static void WritePages(MifareUltralight tag, byte pagestart, byte pageend, byte[][] data)
{
for (byte i = pagestart; i <= pageend; i++)
{
tag.WritePage(i, data[i]);
}
}
