The size of the key is directly related to the quality of security it offers. Larger keys are more secure. Your options for the key size property are:
1024, the size of the default key generated at the JACE, Workbench and Supervisor at start-up.
2048, the default if you generate a key manually. At the time of issuing this guide, this size is required by most Certificate Authorities.
3072
4096
To generate a 1024-bit key on a JACE takes about 15 seconds. To generate a 4096-bit key on a JACE can take a while. The reason is that key generation is math-intensive (it randomly generates prime numbers that meet certain criteria). Ideally, this type of security should be installed in person. If you are sitting next to each JACE with your laptop directly connected to the JACE, you can safely generate a complex key on your laptop and import it into the JACE.
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