remove old hmac function. superceded by ix_psk0

handshake.go

@@ -1,12 +1,5 @@
 package nebula
 
-import (
-	"crypto/hmac"
-	"crypto/sha256"
-	"errors"
-	"github.com/golang/protobuf/proto"
-)
-
 const (
 	handshakeIXPSK0 = 0
 	handshakeXXPSK0 = 1
@@ -36,47 +29,3 @@ func HandleIncomingHandshake(f *Interface, addr *udpAddr, packet []byte, h *Head
 		f.handshakeManager.DeleteVpnIP(newHostinfo.hostId)
 	}
 }
-
-func HandshakeBytesWithMAC(details *NebulaHandshakeDetails, key []byte) ([]byte, error) {
-	mac := hmac.New(sha256.New, key)
-
-	b, err := proto.Marshal(details)
-	if err != nil {
-		return nil, errors.New("Unable to marshal nebula handshake")
-	}
-	mac.Write(b)
-	sum := mac.Sum(nil)
-
-	hs := &NebulaHandshake{
-		Details: details,
-		Hmac:    sum,
-	}
-
-	hsBytes, err := proto.Marshal(hs)
-	if err != nil {
-		l.Debugln("failed to generate NebulaHandshake protobuf", err)
-	}
-
-	return hsBytes, nil
-}
-
-func (hs *NebulaHandshake) CheckHandshakeMAC(keys [][]byte) bool {
-
-	b, err := proto.Marshal(hs.Details)
-	if err != nil {
-		return false
-	}
-
-	for _, k := range keys {
-		mac := hmac.New(sha256.New, k)
-		mac.Write(b)
-		expectedMAC := mac.Sum(nil)
-		if hmac.Equal(hs.Hmac, expectedMAC) {
-			return true
-		}
-	}
-
-	//l.Debugln(hs.Hmac, expectedMAC)
-
-	return false
-}