Ever download a folder full of files, only to notice all of the documents inside are zipped shut and encrypted—basically the digital version of Fort Knox? These are examples of the ever-wonderful, yet ...

We all use archive file formats like .zip, .rar in order to employ lossless data compression. In a single archive file, we can add several files and folders and considerably reduce the combined size ...

eWEEK content and product recommendations are editorially independent. We may make money when you click on links to our partners. Learn More. Compression software companies PKWare Inc. and WinZip ...

You can use TrueCrypt or special apps to encrypt your sensitive data stored on Dropbox, but for greater accessibility and reduced bandwidth consumption, another ...

Qiang Tang receives funding from Google via Digital Future Initiative to support the research on this project. Moti Yung works for Google as a distinguished research scientist. Yanan Li is supported ...