c-treeACE SQL System Tables are now encrypted by default to protect database meta data. The encryption algorithm is AES with a 128-bit key when advanced encryption is in use. Data is hidden with the less-secure CAMO when not using the advanced encryption. CAMO or "Camouflage" is an older, legacy method of hiding data, which is not a standards-conforming encryption scheme, such as AES. It is not intended as a replacement for Advanced Encryption or other security systems.