@item read 32-bytes of blob AEAD encryption key
@item encrypt and authenticate blob using
@url{https://cr.yp.to/chacha.html, ChaCha20}-@url{https://en.wikipedia.org/wiki/Poly1305, Poly1305}.
@item read 32-bytes of blob AEAD encryption key
@item encrypt and authenticate blob using
@url{https://cr.yp.to/chacha.html, ChaCha20}-@url{https://en.wikipedia.org/wiki/Poly1305, Poly1305}.