That's necessary, but not sufficient. We need both sane policies and technical measures to ensure that nothing less than those policies is possible. If we only have the technology, policy-makers can and will make life difficult both for the users and makers of these technologies; more draconian regimes will simply never allow those technologies to take root to begin with.
I think this needs to be expressed more often. Not only will draconian regimes now allow it, but it's also harder to protect such systems at the ends. I saw a presentation by cperciva at some point that talked about the "Three B's": Bribery, Burglary and Blackmail. So tech should be one of many tools to combat oppressive societal structure - some other ones being more social and legal tools.
The concept of the "three Bs" has been around for longer than I have. In my talk ("everything you need to know about cryptography in one hour") I added a fourth B, "guantanamo Bay", aka. torture.
Force them to intimidate and torture at least one side of every communication they want, instead of letting them intimidate and torture three or four centralized service operators to get everybody's communication.
> The Regulation of Investigatory Powers Act 2000 (RIPA), Part III, activated by ministerial order in October 2007,[20] requires persons to supply decrypted information and/or keys to government representatives with a court order. Failure to disclose carries a maximum penalty of two years in jail. The provision was first used against animal rights activists in November 2007,[21] and at least three people have been prosecuted and convicted for refusing to surrender their encryption keys,[22] one of whom was sentenced to 13 months' imprisonment.
