fix bug

crypto/spipe/handshake.go

@@ -275,7 +275,6 @@ func (s *SecurePipe) handleSecureOut(hashType string, mIV, mCKey, mMKey []byte)
 
 	myMac, macSize := makeMac(hashType, mMKey)
 
-	basebuf := make([]byte, 1<<22)
 	for {
 		var data []byte
 		ok := true
@@ -295,23 +294,19 @@ func (s *SecurePipe) handleSecureOut(hashType string, mIV, mCKey, mMKey []byte)
 			continue
 		}
 
-		buff := basebuf[:len(data)+macSize]
+		buff := make([]byte, len(data)+macSize)
 
-		encData(data, buff, myCipher, myMac)
+		myCipher.XORKeyStream(buff, data)
+
+		myMac.Write(buff[0:len(data)])
+		copy(buff[len(data):], myMac.Sum(nil))
+		myMac.Reset()
 
 		// log.Debug("[peer %s] secure out [to = %s] %d", s.local, s.remote, len(buff))
 		s.insecure.Out <- buff
 	}
 }
 
-func encData(data, buff []byte, ciph cipher.Stream, mac hash.Hash) {
-	ciph.XORKeyStream(buff, data)
-
-	mac.Write(buff[0:len(data)])
-	copy(buff[len(data):], mac.Sum(nil))
-	mac.Reset()
-}
-
 // Determines which algorithm to use.  Note:  f(a, b) = f(b, a)
 func selectBest(myPrefs, theirPrefs string) (string, error) {
 	// Person with greatest hash gets first choice.