c-tree's advanced encryption uses a master encryption key to encrypt the following items using the AES cipher:
The length of the master key was increased from 128 bits to 256 bits. FairCom DB can still access files that created with the previous 128-bit master key. This keyword reverts to the original 128-bit master key usage for encryption.
Attempting to open a file created using a 256-bit master key fails with error ENCK_ERR (952) when 256-bit key support is disabled.