re facinating facts bit serial number possibly fixed s and s the only way to view this method of generating unit keys is as a back door what else can you call a key deterministically generated from the serial number to generate the unit key for a serial number n the bit value n is first padded with a fixed bit block to produce a bit block n s and s are then used as keys to triple encrypt n producing a bit block r r e d e n s s s similarly n is padded with two other bit blocks to produce n and n and two additional bit blocks r and r are computed r e d e n s s s r e d e n s s s r r and r are then concatenated together giving bits the first bits are assigned to u and the second bits to u the rest are discarded the unit key u is the xor of u and u u and u are the key parts that are separately escrowed with the two escrow agencies what happens is that the need for the escrow houses is completely eliminated or should i say the need to access the escrow houses to decrypt the data the houses will still serve a real purpose as far as generating the illusion of protection and small town cops won t be let in on the secret so they will still go through the motions of going to the escrow houses but the fact is the federal government can and will build a chip which generates the unit keys from the encrypted serial number nuff said
