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Multi-platform transparent client-side encryption of your files in the cloud
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README.md

Open Cloud Encryptor

Multiplatform transparent client-side encryption of your files in the cloud. You need Java 8 in order to run the application. Get the runtime environment here: http://www.oracle.com/technetwork/java/javase/downloads/index.html

Features

  • Totally transparent: Just work on the encrypted volume, as if it was an USB drive
  • Works with Dropbox, OneDrive (Skydrive), Google Drive and any other cloud storage, that syncs with a local directory
  • In fact it works with any directory. You can use it to encrypt as many folders as you like
  • AES encryption with up to 256 bit key length
  • Client-side. No accounts, no data shared with any online service
  • Filenames get encrypted too
  • No need to provide credentials for any 3rd party service
  • Open Source means: No backdoors. Control is better than trust
  • Use as many encrypted folders in your dropbox as you want. Each having individual passwords

Security

  • Default key length is 256 bit (falls back to 128 bit, if JCE isn't installed)
  • PBKDF2 key generation
  • 4096 bit internal masterkey
  • Cryptographically secure random numbers for salts, IVs and the masterkey of course
  • Sensitive data is swiped from the heap asap
  • Lightweight: Complexity kills security

Consistency

  • I/O operations are transactional and atomic, if the file systems supports it
  • Metadata is stored per-folder, so it's not a SPOF
  • NEW: No Metadata at all. Encrypted files can be decrypted even on completely shuffled file systems (if their contents are undamaged).

Dependencies

  • Java 8 (for UI only - runs headless on Java 7)
  • Maven
  • Awesome 3rd party open source libraries (Apache Commons, Apache Jackrabbit, Jetty, Jackson, ...)

TODO

Core

  • WebDAV Session handling
  • Java NIO file locking
  • Support for HTTP range requests

UI

  • Automount of WebDAV volumes for Win/Mac/Tux
  • App icon and drive icons in WebDAV volumes
  • Change password functionality
  • CRC32 checksums for decrypted files
  • Better explanations on UI

License

Distributed under the MIT license. See the LICENSE file for more info.