// crypto: namespace for cryptographic primitives.
//
// Go goish
// ───────────────────────────────── ──────────────────────────────────
// "crypto/md5" goish::crypto::md5
// "crypto/sha1" goish::crypto::sha1
// "crypto/sha256" goish::crypto::sha256
//
// Go's `crypto` package itself defines the `Hash` enum + PublicKey interfaces;
// those land in v0.5+ alongside any AEAD support. For now this is a namespace
// for the digest sub-packages.