Cellular Network Infrastructure » IMSI Pseudonymization

	private byte nibble2hex(byte nibble)

	{

		nibble = (byte)(nibble & 0xf);

		if (nibble < 0xa)

			return (byte)('0' + nibble);

		else

			return (byte)('a' + nibble - 0xa);

	}

	private byte[] hexdump(byte data[])

	{

		byte res[] = new byte[(byte)(data.length*2)];

		for (byte i = 0; i < data.length; i++) {

			res[(byte)(i*2)] = nibble2hex((byte)(data[i] >> 4));

			res[(byte)(i*2 + 1)] = nibble2hex(data[i]);

		}

		return res;

	}