Using cloud storage opens the impressive possibility having data which is stored in an area save against data loss. To have an aspect of privacy, some Cloud Storage provider stores your files encrypted on server side.
With DAO4Sync Drive you can enable client side encryption when updating respectively uploading files to your Cloud Storage, e.g. Google Drive, Dropbox or Amazon S3. It is possible to enable encryption on file or folder level. The file content will be encrypted when doing the update to the corresponding Cloud Storage. Encryption will be done based on the Advanced Encryption Standard with a key length of 256 bits.