Speaking of the NaCL Box
Here's a 'Go' implementation of it: https://godoc.org/golang.org/x/crypto/nacl/box
(what is 'NaCL'?) - conventionally, its "salt" if we're going by the periodic table, but in this context, we're referring to the cryptographic library (and you use 'salt' in cryptography, get it?)
This library has extremely strong cryptography. The hyperlinked text above leads to Daniel Bernstein's site - we don't need to speak on how legitimate his algorithms tend to be (despite the weird wave of hate they've been getting from other jealous cryptographers that haven't been able to achieve the same level of notoriety that Daniel Bernstein).
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