save the proof in client CryptoSetup

handshake/crypto_setup_client.go

@@ -25,6 +25,7 @@ type cryptoSetupClient struct {
 	stk                  []byte
 	sno                  []byte
 	nonc                 []byte
+	proof                []byte
 	diversificationNonce []byte
 	lastSentCHLO         []byte
 	certManager          crypto.CertManager
@@ -132,6 +133,10 @@ func (h *cryptoSetupClient) handleREJMessage(cryptoData map[Tag][]byte) error {
 		}
 	}
 
+	if proof, ok := cryptoData[TagPROF]; ok {
+		h.proof = proof
+	}
+
 	if crt, ok := cryptoData[TagCERT]; ok {
 		err := h.certManager.SetData(crt)
 		if err != nil {