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To: Cosmo Daisey who wrote (12302)	12/8/1999 8:18:00 AM
From: John Walliker	Respond to of 54805

Cosmo, The scientists working on the project used an old computer with a huge hard drive to crack the code. The system is not secure, its been broken. Future sim cards can be broken much more quickly now that the project has a model. As scientists we deal in discoveries and the reported discovery is GSM is not secure. CDMA has a natural encription that defies attempts to crack it. CDMA was developed during WWII as a secure radio link. Future SIM cards could contain a totally different encryption algorithm which bears no relationship to the existing ones. I don't see how breaking one algorithm could help with breaking a different one. How does CDMA have natural encryption? Surely, there is a predefined set of spreading codes and any suitable receiver will be able to receive the signal. The only thing that makes CDMA signals "secure" is that they cannot be received with conventional narrowband receivers. CDMA is no more or less secure than GSM. It is the encryption algorithms and the way they are used that makes the difference. Remember that as soon as the signals get onto the telephone network they are accessible to tapping and eavesdropping by the usual methods. John