While I agree with her statements that there needs to be some sort of back door for the government to ensure that terrorists cannot move through encrypted spaces without being noticed, I do not think that essentially eliminating encryption all together is the answer, as this punishes "regular" people who have nothing to hide besides their bank statements and personal photos.
Hilary Clinton's call for a "Manhattan-like project" to deal with encrypted communications was viable up until the moment she talked about it on national TV. The Manhattan Project was a top secret program. If it had been revealed before its inception it would have probably not gotten off the ground, at least not without a lot of opposition. If Hilary wanted to do something of that magnitude she should have kept it quiet.
Hillary Clinton's call for a "Manhattan-like project" to deal with encrypted communications not viable because private information needs to be private. Intimate conversation whit your loved ones or friend or co workers must be private. It is an Utopian world where everybody shares everything whit everyone. Our civilization is far from that. Protect yourself,your financial and emotional data.
It is common for politicians to conjure up images from history or contemporary culture to invoke the imagination and give it form. The Manhattan project was designed to create a nuclear device that could create horrible devastation. Encrypted communications is a complex issue between politics, our rights and the ability of federal officers to do their job. It is not a situation where scientists are secretly hushed into a secret place to devise a specific weapon. The communications problem with Daesh is not something that can be whisked away with one specialized weapon.