Revert lenData=len(data) assignment

[govpn.git] / src / cypherpunks.ru / govpn / identity.go

diff --git a/src/cypherpunks.ru/govpn/identity.go b/src/cypherpunks.ru/govpn/identity.go
index 52d430d6c1807df2ca94025309e76cb46acb93d7..81066bc715abbe961eb9225d60ee3dfd2b2b94b5 100644 (file)
--- a/src/cypherpunks.ru/govpn/identity.go
+++ b/src/cypherpunks.ru/govpn/identity.go
@@ -141,15 +141,14 @@ func AddTimeSync(ts int, data []byte) {
 // as plaintext and last bytes as cyphertext.
 func (mc *MACCache) Find(data []byte) (*PeerID, error) {
        const minimumSize = 8 * 2
-       lenData := len(data)
        fields := logrus.Fields{
                "func": logFuncPrefix + "MACCache.Find",
-               "data": lenData,
+               "data": len(data),
                "size": mc.Length(),
        }
        logger.WithFields(fields).Debug("Starting")
-       if lenData < minimumSize {
-               return nil, errors.Errorf("MAC is too small %d, minimum %d", lenData, minimumSize)
+       if len(data) < minimumSize {
+               return nil, errors.Errorf("MAC is too small %d, minimum %d", len(data), minimumSize)
        }
        buf := make([]byte, 8)
        sum := make([]byte, 32)
@@ -171,7 +170,7 @@ func (mc *MACCache) Find(data []byte) (*PeerID, error) {
                mt.mac.Sum(sum[:0])
                mt.l.Unlock()
 
-               if subtle.ConstantTimeCompare(sum[len(sum)-8:], data[lenData-8:]) == 1 {
+               if subtle.ConstantTimeCompare(sum[len(sum)-8:], data[len(data)-8:]) == 1 {
                        logger.WithFields(fields).WithFields(loopFields).Debug("Matching peer")
                        ppid := PeerID(pid)
                        return &ppid, nil