finished component: Nonce

This commit is contained in:
free will committed 2021-03-09 17:27:10 +08:00
1 parent 9df4cf742a
commit a1e25eefc2
2 files changed
+105 -1

No files matched your search

+1 -1
View File
@@ -82,7 +82,7 @@ public class FreshnessPeriod implements TlvComponentBase,InitialAble, IEncodingA
return false;
}
// 读取 FreshnessPeriod
// 读取 value
long value=TLV.readNonNegativeInteger(block.getValue(),0,block.getLength().getVlIntValue2Int());
if(value<0){
return false;
+104
View File
@@ -0,0 +1,104 @@
package component;
import encoding.*;
import java.util.Random;
/*
* @Author: Wang Feng
* @Description: 表示一个随机数 TLV 组件
* @Version: 1.0.0
* @Date: 17:13 2021/3/9
* @Copyright: MIN-Group;国家重大科技基础设施——未来网络北大实验室;深圳市信息论与未来网络重点实验室
*/
public class Nonce implements TlvComponentBase,InitialAble, IEncodingAble {
// 成员变量
private long nonce;
// 成员函数
public long getNonce() {
return this.nonce;
}
public void setNonce(long nonce) {
this.nonce = nonce;
this.doInitial();
}
/**
* 刷新Nonce,随机生成一个数值传递给Nonce
*/
public void refreshNonce(){
long randomLong=Math.abs(new Random().nextLong());
this.setNonce(randomLong);
}
// 接口实现-变量区
private boolean initial=false;
// 接口实现-方法区
@Override
public void doInitial() {
initial=true;
}
@Override
public boolean isInitial() {
return initial;
}
/**
* 将 Nonce 线速编码为一个 TLV
* @param encoder
* @return
*/
@Override
public int wireEncode(Encoder encoder) {
int totalLength=0;
// 编码 TLV-VALUE
int tmplen=encoder.prependNonNegativeInteger(this.nonce);
if(tmplen==0){
return 0;
}
totalLength+=tmplen;
// 编码 TLV-LENGTH
tmplen+=encoder.prependVarNumber(new VlInt(totalLength));
if(tmplen==0){
return 0;
}
totalLength+=tmplen;
// 编码 TLV-TYPE
tmplen+=encoder.prependVarNumber(new VlInt(TLV.TlvNonce));
if(tmplen==0){
return 0;
}
totalLength+=tmplen;
return totalLength;
}
/**
* 从 TLV Block 中解码出一个 Nonce
* @param block
* @return
*/
@Override
public boolean wireDecode(Block block) {
// 检查 Type 是否正确
if(!TLV.expectType(block.getTlvType(),new VlInt(TLV.TlvNonce))){
return false;
}
// 读取 value
long value=TLV.readNonNegativeInteger(block.getValue(),0,block.getLength().getVlIntValue2Int());
if(value<0){
return false;
}
this.setNonce(value);
return true;
}
}