Function extract

tls13/tls13.go:43–49

(hash func() H, newSecret, currentSecret []byte)

}

func extract[H hash.Hash](hash func() H, newSecret, currentSecret []byte) []byte {
	if newSecret == nil {
		newSecret = make([]byte, hash().Size())
	}
	b, _ := hkdf.Extract(hash, newSecret, currentSecret)
	return b
}

func deriveSecret[H hash.Hash](hash func() H, secret []byte, label string, transcript hash.Hash) []byte {
	if transcript == nil {