在 OnionShare 官網上的說明是這樣寫:
OnionShare is an open source tool that lets you securely and anonymously share a file of any size.
Wiki 的說明比較清楚,實際上是在本機開一個 Hidden Service,而使用者必須透過 Tor Browser 這類的服務下載,這樣可以達成提供者與下載者都彼此匿名:
OnionShare lets you securely and anonymously share files of any size. It works by starting a web server, making it accessible as a Tor onion service, and generating an unguessable URL to access and download the files. It doesn't require setting up a server on the internet somewhere or using a third party filesharing service. You host the file on your own computer and use a Tor onion service to make it temporarily accessible over the internet. The other user just needs to use Tor Browser to download the file from you.
用法的部份就更清楚了:
Open OnionShare, drag and drop files and folders you wish to share into it, and click Start Sharing. After a moment, it will show you a .onion URL such as http://asxmi4q6i7pajg2b.onion/egg-cain. This is the secret URL that can be used to download the file you're sharing.
如果下載者不是那麼在意匿名性的話,Tor2web 這類的服務應該也可以用...
感覺以現在提供的功能來看還是不夠便利,實驗性質居多 XD