[SudoNick]

Most of the time we do care about (not!) exposing information to third parties. This even applies to generally lower-importance scenarios such as watching YouTube and Netflix videos.

ISPs are of special importance, because the exposures can be concentrated. We make use of end-to-end encryption with specific servers in order to reduce the information that ISPs (and others) acquire. How will we hide interest data from ISPs in an NPN world?

[takeda]

Oh this is not a big problem.

You simply encrypt the data, the protocol even has a support for marking encrypted data [1].

That said the NDN does not impose how you do it and it is left for the application.

Now if the data is only end-to-end you probably would do something similar to TLS. If the data supposed to be accessible by multiple users, then you encrypt it with generated key, and then encrypt the key using public keys of intended recipients.

[1] http://www.ccnx.org/pubs/ccnx-mosko-tlvmessages-01.html (Section 3.5.2.2.1. PayloadType)