TODO: top comment
alias for sodiumoxide::crypto::box_::curve25519xsalsa20poly1305, the used public key crypto
suite. This pub use exists as long as naclbox::PublicKey and naclbox::SecretKey are part
of this crate’s API.
crypto_box_curve25519xsalsa20poly1305 , a particular
combination of Curve25519, Salsa20, and Poly1305 specified in
Cryptography in NaCl.