public RSUEntity(int id, int hops, int nbs, Certificate cert, bool isWired)
{
this.id = id;
this.hops = hops;
this.nbs = nbs;
this.cert = cert;
this.isWired = isWired;
}
public CertificateArg(Certificate cert, CertificateMethod method)
{
this.cert = cert;
this.method = method;
}
public VANETReader(int id, int org)
: base(id, org)
{
this.global = (VANETGlobal)Global.getInstance();
int[] key = new int[32];
key[0] = (int)NodeType.READER;
key[1] = id;
key[2] = 0;
this.IssuedCertificate = new Certificate(id, key, Certificate.RootCA.CAId, Certificate.RootCA.CAPubKey);
this.RSUCache = new Dictionary<int, RSUEntity>();
this.CertificateCache = new Dictionary<string, CertificateCache>();
this.NeighborBackbones = new Dictionary<int, int>();
this.pendingCerterficatingObjects = new Dictionary<int, float>();
}
public void RecvCertificate(Packet pkg)
{
if (pkg.Next != this.Id)
return;
//rsu收到obu的证书，进行验证
if (pkg.SrcType != NodeType.OBJECT)
{
Console.WriteLine("Wrong prev type!");
return;
}
string key = pkg.VANETCertificate.getStrPubKey();
Certificate c = new Certificate(pkg.VANETCertificate.Id, pkg.VANETCertificate.PubKey, pkg.VANETCertificate.CAId, pkg.VANETCertificate.CAPubKey);
float delay = GetCheckCertificateDelay(c);
//如果本地缓存中没有证书，则向ca请求；不是由本节点认证的话，直接验证（delay=0）
if (delay > 0.0001f)
{
CertificateArg arg = new CertificateArg(c, CertificateMethod.REMOTE_AUTH);
Console.WriteLine("---------------------------------");
Event.AddEvent(new Event(scheduler.currentTime + delay, EventType.CHK_CERT, this, arg));
return;
}
if(this.CertificateCache[key].authenticatedRSUId != this.Id)
{
CertificateArg arg = new CertificateArg(c, CertificateMethod.LOCAL);
Console.WriteLine("---------------------------------");
Event.AddEvent(new Event(scheduler.currentTime + delay, EventType.CHK_CERT, this, arg));
}
else//否则直接通过
{
//认证完毕之后删除
float starttime = this.pendingCerterficatingObjects[c.Id];
this.pendingCerterficatingObjects.Remove(c.Id);
Packet pkg1 = new Packet(this, global.objects[c.Id], PacketType.DATA_AVAIL);
pkg1.Data = starttime;
SendPacketDirectly(scheduler.currentTime, pkg1);
}
if (IsPreFetchCertificate(c))
{
CertificateArg arg = new CertificateArg(c, CertificateMethod.REMOTE_RETR);
Console.WriteLine("prefetch---------------------------------");
Event.AddEvent(new Event(scheduler.currentTime + global.checkCertDelay, EventType.CHK_CERT, this, arg));
this.prefetchingCertIds.Add(c.Id);
}
}
public CertificateCache(Certificate cert, int time, int authenticatedRSUId)
{
this.cert = cert;
this.time = time;
this.authenticatedRSUId = authenticatedRSUId;
}
public bool IsPreFetchCertificate(Certificate cert)
{
//已经在取了，取消
if (this.prefetchingCertIds.Contains(cert.Id))
return false;
string key = cert.getStrPubKey();
//证书缓存中有该项
//0.3f是一个较小的值
if (this.CertificateCache.ContainsKey(key) && scheduler.currentTime - this.CertificateCache[key].time > 10-global.checkCertDelay-0.3f)
return true;
else
return false;
}
public float GetCheckCertificateDelay(Certificate cert)
{
string key = cert.getStrPubKey();
//证书缓存中有该项
if (this.CertificateCache.ContainsKey(key) && scheduler.currentTime - this.CertificateCache[key].time < 10)
return 0;
return global.checkCertDelay;
}
public VANETRSUJoinField(int id, int hops, int nbs, Certificate cert, bool isWired)
{
this.id = id;
this.hops = hops;
this.nbs = nbs;
this.cert = cert;
this.isWired = isWired;
}
public VANETNewBackboneResponseField(Certificate cert)
{
this.rsuCert = cert;
}
public VANETNewBackboneRequestField(Certificate cert)
{
this.backboneCert = cert;
}
public VANETCAForwardField(Certificate rsuCA, Certificate objCA, int time, int hops, int src)
{
this.rsuCA = rsuCA;
this.objCA = objCA;
this.time = time;
this.hops = hops;
this.src = src;
}