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 were created with the previous 128-bit master key. This keyword reverts to the original 128-bit master key usage.
Attempting to read a transaction log encrypted with a 256-bit encryption key when only 128-bit log encryption support is enabled fails and c-tree logs the following message to CTSTATUS.FCS:
Cannot read existing encrypted logs. Log is using 256-bit encryption key but server is configured for 128-bit encryption support.