Method deriveSecret

key_schedule.go:54–59

deriveSecret implements Derive-Secret from RFC 8446, Section 7.1.

(secret []byte, label string, transcript hash.Hash)

// deriveSecret implements Derive-Secret from RFC 8446, Section 7.1.
func (c *cipherSuiteTLS13) deriveSecret(secret []byte, label string, transcript hash.Hash) []byte {
	if transcript == nil {
		transcript = c.hash.New()
	}
	return c.expandLabel(secret, label, transcript.Sum(nil), c.hash.Size())
}

// extract implements HKDF-Extract with the cipher suite hash.
func (c *cipherSuiteTLS13) extract(newSecret, currentSecret []byte) []byte {