pkg io/fs, type PathError struct, Path string
pkg io/fs, type ReadDirFS interface { Open, ReadDir }
pkg io/fs, type ReadDirFS interface, Open(string) (File, error)
pkg io/fs, type ReadDirFS interface, ReadDir(string) ([]DirEntry, error)
pkg io/fs, type ReadDirFile interface { Close, Read, ReadDir, Stat }
pkg io/fs, type ReadDirFile interface, Close() error
pkg io/fs, type ReadDirFile interface, Read([]uint8) (int, error)

[<a href="#Go_1.18">Go 1.18</a>].
</p>

<pre>
type Reader interface {
	Read(p []byte) (n int, err error)
	Close() error
}

type Writer interface {
	Write(p []byte) (n int, err error)
	Close() error
}

// ReadWriter's methods are Read, Write, and Close.
type ReadWriter interface {
	Reader  // includes methods of Reader in ReadWriter's method set

pkg crypto/ed25519, const SeedSize = 32
pkg crypto/ed25519, const SeedSize ideal-int
pkg crypto/ed25519, const SignatureSize = 64
pkg crypto/ed25519, const SignatureSize ideal-int
pkg crypto/ed25519, func GenerateKey(io.Reader) (PublicKey, PrivateKey, error)
pkg crypto/ed25519, func NewKeyFromSeed([]uint8) PrivateKey
pkg crypto/ed25519, func Sign(PrivateKey, []uint8) []uint8
pkg crypto/ed25519, func Verify(PublicKey, []uint8, []uint8) bool