diff --git a/hello/HelloProtocol.go b/hello/HelloProtocol.go
index fedb956..6427889 100644
--- a/hello/HelloProtocol.go
+++ b/hello/HelloProtocol.go
@@ -15,6 +15,7 @@ import (
 	"minlib/packet"
 	"minlib/security"
 	"mlsr/common"
+	"mlsr/extensions"
 	"mlsr/lsa"
 	"mlsr/lsdb"
 	"time"
@@ -220,9 +221,50 @@ func (h *HelloProtocol) onContent(interest *packet.Interest, data *packet.Data)
 	logrus.Debug("Received data for name:v%", data.GetName())
 	Sig, _ := data.GetSignature(0) //获取指定位置的签名
 	kl := Sig.SigInfo.GetKeyLocator()
-	//签名的格式如何验证？？？？？？？？？？？？
+	//签名的格式如何验证？？？？？？？？？？？？extensions选的是TlvMlsrLsaNamePrefix吗？
 	if kl != nil {
-		logrus.Debug("Data signed with:v%", kl.GetIdentifier())
+		if encoding.ExpectType(kl.Raw().GetType(), extensions.TlvMlsrLsaNamePrefix) != nil {
+			logrus.Debug("Data signed with:v%", kl.GetIdentifier())
+		}
 	}
 	//数据如何校验？？？？？？？？？？？？？
 }
+
+//
+//  onContentValidated
+//  @Description: 改变一个邻居的状态
+//  @receiver h
+//  @param data
+//
+func (h *HelloProtocol) onContentValidated(data *packet.Data) {
+	// data name: /<neighbor>/NLSR/INFO/<router>/<version>
+	dataName := data.GetName()
+	logrus.Debug("Data validation successful for name:v%", dataName)
+	info, _ := dataName.Get(-3)
+	if info.ToUri() == INFO_COMPONENT {
+		neighborPrefix, _ := dataName.Get(-4)
+		var neighbor *component.Identifier
+		neighbor.WireDecode(neighborPrefix.Raw())
+		oldStatus, _ := adjacentList.GetStatusOfNeighbor(neighbor)
+		adjacentList.SetStatusOfNeighbor(neighbor, 1) //邻居路由器的状态：未知-1、未激活0、激活1
+		adjacentList.SetTimedOutInterestCount(neighbor, 0)
+		newStatus, _ := adjacentList.GetStatusOfNeighbor(neighbor)
+
+		logrus.Debug("Neighbor:v%", neighbor)
+		logrus.Debug("Old status:v%,New status:V%", oldStatus, newStatus)
+		// change in Adjacency list
+		if oldStatus != newStatus {
+			h.ScheduleAdjLsaBuild()
+		}
+
+	}
+
+}
+
+//
+//  onContentValidationFailed
+//  @Description:
+//  @param data
+//  @return {}
+//
+func onContentValidationFailed(data *packet.Data) {}