I was just wondering if filenames are encrypted on IDrive's servers when using private key encryption. The Terms & Conditions state:
"Encryption System
IDrive supports 256-bit AES data encryption before transmission from your computer using either (i) a default key or (ii) an optional user defined private key created by you. Based on your privacy and security needs, you need to make an appropriate encryption key choice. This encryption process encrypts the data contained within the file and not the file-name itself. For web and mobile based data transfers, data is sent over an encrypted channel with server side AES 256-bit encryption.
If you choose the default encryption option, the system chooses a key for encrypting your data. While your data is still encrypted, IDrive personnel may still be able to decrypt your data using your Registration Information if such a situation should ever arise.
For private key accounts:
Should you choose to use a user defined private key for encrypting your data, IDrive personnel will not have access to this key and it will not be stored on the IDrive servers. It is very important that you store your user defined private key in a safe place and maintain this key in printed form for reference. Any data backed up using the Services can only be retrieved using your key and if you forget or misplace this key then your data may not be retrievable. IDrive is NOT responsible for loss of data arising as a result of such cases.
When logging into your account via the desktop client, you will need to enter your private key, but it is only stored on the client and is never sent to the IDrive servers. In order to verify that the information you enter is correct, a derivative of that key is generated and matched, allowing you to access your account. When you provide your private key while logging into your account using the web application, the key is sent to our servers for the duration of that session only and the key always remains fully encrypted throughout transmission."
But I can't tell if its referring to private key encryption as well.