Mark Rowley, the UK's national police lead for counter-terrorism, said, "[The acceleration of technology] can be set up in a way which is friendly to terrorists and helps them
... and creates challenges for law enforcement and intelligence agencies. Or it can be set up in a way which doesn't do that."
Rephrasing that and removing the "mealy-mouth" what he is saying is "Tech companies who don't actively support the expansion of the police state by any means necessary are friendly to terrorists." This is a patently ridiculous statement for which he would be burned in effigy if he stated it openly
Expecting a software developer(a specialist) to necessarily possess knowledge of encryption technologies is naive. For example a Java developer specializing in UI's is never going to have the need to delve into the world of file encryption. A network specialist is never going to need to know the difference between an Array and a List.
Decide what the position requires, advertise the job referencing the requirements, and focus on the job requirements when you are interviewing the candidates. Everything else is extraneous, a distraction, and a waste of everybody's time. .
Stellar rays prove fibbing never pays. Embezzlement is another matter.