Method finishedHash

key_schedule.go:37–42

finishedHash generates the Finished verify_data or PskBinderEntry according to RFC 8446, Section 4.4.4. See sections 4.4 and 4.2.11.2 for the baseKey selection.

(baseKey []byte, transcript hash.Hash)

// to RFC 8446, Section 4.4.4. See sections 4.4 and 4.2.11.2 for the baseKey
// selection.
func (c *cipherSuiteTLS13) finishedHash(baseKey []byte, transcript hash.Hash) []byte {
	finishedKey := tls13.ExpandLabel(c.hash.New, baseKey, "finished", nil, c.hash.Size())
	verifyData := hmac.New(c.hash.New, finishedKey)
	verifyData.Write(transcript.Sum(nil))
	return verifyData.Sum(nil)
}

// exportKeyingMaterial implements RFC5705 exporters for TLS 1.3 according to
// RFC 8446, Section 7.5.