Any American created communications security protocols and standards should be considered unusable after the Snowden revelations. They are designed with inherent flaws from day one and cannot be trusted.
Enigma in WW2 had (at best) 88 bit security which was broken by maths and mechanical machines in days. Today, some seventy years later, the best we are allowed to use (by US Commerce legislation) is 256 bit. And no one sees this to be an issue.
Snowden only told us what he knew. I'll bet there is a lot he was never given access too. A universal review of all encryption methods needs to be done with the US barred from the room. Think of it like the metric system. The rest of the world can use it and the Yanks can keep their inches.