HTML5 client open source code under BSD1 License (not for reselling 7 commercial use)
updated security model and details: http://xn----0gab.edutoolbox.de/wp-content/uploads/2015/01/oeoeSicherheit2015.pdf
notice: secret image funcionality is not included in this commit. security: secret images are converted from the originally chosen image-file into 350x320px images of a particular blob format and the blob is sended like other file blobs using the salsa20/20 stream cipher. functionallity is running stable and secure but we will further improve compression before publishing the code here.