The service cryptshare allows a secure transfer of files up to 20 GB total size and can be reached at The users of TU Clausthal can upload files via web interface and make them available for others to download or upload files from other sites.

The entire process - uploading, caching and retrieval - is secured by cryptographic methods. Notifications are automatically sent by e-mail. The only requirement is the use of a e-mail address on the sender and/or recipient side.

Both messages and files can be sent to one or more recipients, similar to a normal e-mail. You must verify your email before sending, and for added security you can set a password to retrieve the files.

To the service:

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