Beginning in TKE V6.0, users can select the length of the RSA keys used to establish secure communication within a zone. The zone key length is selected when initializing and personalizing a CA smart card. This zone key length is used for any TKE or EP11 smart cards created in the zone and any TKE workstations enrolled in the zone. Key lengths of 1024-bits and 2048-bits are allowed. You are allowed to create EP11 smart cards only when the zone key length is 2048-bits
Prior to TKE V6.0, the zone key length is 1024-bits. For smart cards, the zone key length can be displayed using the Smart Card Utility Program.