[](https://cryptomator.org/) [](https://github.com/cryptomator/cryptomator/actions?query=workflow%3ABuild) [](https://snyk.io/test/github/cryptomator/cryptomator?targetFile=main%2Fpom.xml) [](https://www.codacy.com/app/cryptomator/cryptomator?utm_source=github.com&utm_medium=referral&utm_content=cryptomator/cryptomator&utm_campaign=Badge_Grade) [](http://twitter.com/Cryptomator) [](https://translate.cryptomator.org/) [](https://github.com/cryptomator/cryptomator/releases/latest) [](https://community.cryptomator.org) ## Supporting Cryptomator Cryptomator is provided free of charge as an open-source project despite the high development effort and is therefore dependent on donations. If you are also interested in further development, we offer you the opportunity to support us: - [One-time or recurring donation via Cryptomator's website.](https://cryptomator.org/#donate) - [Become a sponsor via Cryptomator's sponsors website.](https://cryptomator.org/sponsors/) ### Gold Sponsors [<img src="https://cryptomator.org/img/sponsors/geewhiz.svg" alt="gee-whiz" height="96">](https://www.gee-whiz.de/) ### Silver Sponsors [](https://thebestvpn.com/) --- ## Introduction Cryptomator offers multi-platform transparent client-side encryption of your files in the cloud. Download native binaries of Cryptomator on [cryptomator.org](https://cryptomator.org/) or clone and build Cryptomator using Maven (instructions below). ## Features - Works with Dropbox, Google Drive, OneDrive, ownCloud, Nextcloud and any other cloud storage service which synchronizes with a local directory - Open Source means: No backdoors, control is better than trust - Client-side: No accounts, no data shared with any online service - Totally transparent: Just work on the virtual drive as if it were a USB flash drive - AES encryption with 256-bit key length - File names get encrypted - Folder structure gets obfuscated - Use as many vaults in your Dropbox as you want, each having individual passwords - Two thousand commits for the security of your data!! :tada: ### Privacy - 256-bit keys (unlimited strength policy bundled with native binaries) - Scrypt key derivation - Cryptographically secure random numbers for salts, IVs and the masterkey of course - Sensitive data is wiped from the heap asap - Lightweight: [Complexity kills security](https://www.schneier.com/essays/archives/1999/11/a_plea_for_simplicit.html) ### Consistency - HMAC over file contents to recognize changed ciphertext before decryption - I/O operations are transactional and atomic, if the filesystems support it - Each file contains all information needed for decryption (except for the key of course), no common metadata means no [SPOF](http://en.wikipedia.org/wiki/Single_point_of_failure) ### Security Architecture For more information on the security details visit [cryptomator.org](https://docs.cryptomator.org/en/latest/security/architecture/). ## Building ### Dependencies * JDK 14 (e.g. adoptopenjdk) * Maven 3 * Optional: OS-dependent build tools for native packaging (see [Windows](https://github.com/cryptomator/cryptomator-win), [OS X](https://github.com/cryptomator/cryptomator-osx), [Linux](https://github.com/cryptomator/builder-containers)) ### Run Maven ``` cd main mvn clean install -Prelease ``` This will build all the jars and bundle them together with their OS-specific dependencies under `main/buildkit/target`. This can now be used to build native packages. ### Start Cryptomator If you unzip the buildkit for your OS, you will find a launcher script with some basic settings. You might want to adjust these to your needs. To start Cryptomator, simply execute the launcher script from a terminal, e.g. `launcher-linux.sh`, if you're on a Linux system. ## License This project is dual-licensed under the GPLv3 for FOSS projects as well as a commercial license for independent software vendors and resellers. If you want to modify this application under different conditions, feel free to contact our support team.