0000000- Spare
Cell Identifier
00000101 IE Name Cell identifier
00000101 IE Length 5
00000001 Cell ID discriminator LAC/CI used to ident cell
******** LAC 4868
******** CI 3200
The beauty of a digital mobile phone, as opposed to the analogue mobile phones still used by some people in Australia, is that a conversation is reasonably secure from eavesdroppers. If I call you on my digital mobile, our conversation will be encrypted with the A5 encryption algorithm between the mobile phone and the exchange. The carrier has copies of the Kis and, in some countries, the government can access these copies. They are, however, closely guarded secrets.
SKiMo had access to the database of the encrypted Kis and access to some of the unencrypted Kis themselves. At the time, he never went to the trouble of gathering enough information about the A3 and A8 algorithms to decrypt the full database, though it would have been easy to do so. However, he has now obtained that information.
To SKiMo, access to the keys generated for each of thousands of German mobile phone conversations was simply a curiosity—and a trophy. He didn't have the expensive equipment required to eavesdrop. To an intelligence agency, however, access could be very valuable, particularly if some of those phones belonged to people such as politicians. Even more valuable would be ongoing access to the OMC, or better still, the MSC. SkiMo said he would not provide this to any intelligence agency.