Right. It's what i already told. 
I don't know much about cryptography, just a few things, but when i have a project being funded by the USA government while it's using a USA navy algorythm, doesn't mean it's ok and that there is not a backdoor or something because the code is open and can and was review by several people. Funding a project that uses your cryptography and that can be used against you, makes no sense to me, except if you have a backdoor. The recent incident with xz-utils also shows that it is possible. Yes it was revealed because it's open but it is possible. Besides that, i myself, all my life when i wanted to hide something, i did it in public view with 100% success so far.