如何用java程序实现加密的序列号

Java为安全应用提供了丰富的API，J2SDK14 的JSSE (JavaTM Secure Socket Extension) 包括javaxsecuritycertificate包，并且提供对证书的 *** 作方法，代码如下：

import javaxswing;

import javaawt;

import javaawtevent;

import javaxswingtable;

import javasecuritycertCertificateFactory;

import javasecuritycertX509Certificate;

import javaio;

public class CARead extends JPanel {

private String CA_Name;

private String CA_ItemData[][] = new String[9][2];

private String[] columnNames = {"证书字段标记","内容" };

public CARead(String CertName) {

CA_Name=CertName;

/ 三个Panel用来显示证书内容/

JTabbedPane tabbedPane = new JTabbedPane();

JPanel panelNormal = new JPanel();

tabbedPaneaddTab("普通信息", panelNormal);

JPanel panelAll=new JPanel();

panelAllsetLayout(new BorderLayout());

tabbedPaneaddTab("所有信息",panelAll);

JPanel panelBase64=new JPanel();

panelBase64setLayout(new BorderLayout());

tabbedPaneaddTab("Base64编码信息",panelBase64);

/ 读取证书常规信息 /

Read_Normal(panelNormal);

/ 读取证书文件字符串表示内容 /

Read_Bin(panelAll);

/ 读取证原始Base64编码形式的证书文件 /

Read_Raw(panelBase64);

tabbedPanesetSelectedIndex(0);

setLayout(new GridLayout(1, 1));

add(tabbedPane);

}

}

定义证书信息的读取函数如下：

private int Read_Normal(JPanel panel){

String Field;

try{

CertificateFactory certificate_factory=CertificateFactorygetInstance("X509");

FileInputStream file_inputstream=new FileInputStream(CA_Name);

X509Certificate

x509certificate=(X509Certificate)certificate_factorygenerateCertificate

(file_inputstream);

Field=x509certificategetType();

CA_ItemData[0][0]="类型";

CA_ItemData[0][1]=Field;

Field=IntegertoString(x509certificategetVersion());

CA_ItemData[1][0]="版本";

CA_ItemData[1][1]=Field;

Field=x509certificategetSubjectDN()getName();

CA_ItemData[2][0]="标题";

CA_ItemData[2][1]=Field;

/ 以下类似，这里省略

Field=x509certificategetNotBefore()toString();得到开始有效日期

Field=x509certificate getNotAfter()toString();得到截止日期

Field=x509certificategetSerialNumber()toString(16);得到序列号

Field=x509certificategetIssuerDN()getName();得到发行者名

Field=x509certificategetSigAlgName();得到签名算法

Field=x509certificategetPublicKey()getAlgorithm();得到公钥算法 /

file_inputstreamclose();

final JTable table = new JTable(CA_ItemData, columnNames);

TableColumn tc=null;

tc = tablegetColumnModel()getColumn(1);

tcsetPreferredWidth(600);

paneladd(table);

}catch(Exception exception){

exceptionprintStackTrace();

return -1;

}

return 0;

}

public static void main(String[] args) {

int[] jine = new int[5];

int sum = 0;

Scanner input = new Scanner(Systemin);

for (int a = 0; a < jinelength; a++) {

Systemoutprintln("请输入第" + (a + 1) + "次购买的金额:");

jine[a] = inputnextInt();

sum += jine[a];

}

Systemoutprintln("序号\t\t" + "金额(元)");

for (int a = 0; a < jinelength; a++) {

Systemoutprintln((a + 1) + "\t\t" + jine[a]);

}

Systemoutprintln("总金额(元)：" + sum);

}

Oracle的话，用SEQUENCE，如果是JAVA的话，用一个变量来保存就好。

写个方法，下面只是演示，代码只是演示代码，实际根据自己情况自己补充：

public String getOrderNo(Date d) {

if (d == null) {

d = new Date();

}

String dOut = doFormat(d);// 自己写个处理函数处理日期到上面你说的格式。

Int lastNo = getLastNumberFromConfigFile(dOut);//自己写一个从配置文件里读取上面日期的函数,如果没有就返回0

lastNo ++;

setlastNumberToConfiFile(dOut, lastNo);

String sOut = dOut + (lastNo / 1000)subString(3, 3); //

return sOut;

}

如果是J2ee里是单线程 *** 作的话，可以这样，如果可能会多线程 *** 作，要加上synchronized或加LOCK来处理。

一、上Google搜一下Mac及CPU ID的C代码

二、上javasuncom找那个JNI的指南

三、你用二的方法把一的代码给包一下。

其实利用在java中的runtime来执行在win里面的ipconfig -all的命令可以实现的！！

javalangProcess proc = RuntimegetRuntime()exec("ipconfig /all");

InputStream istr = procgetInputStream();

byte[] data = new byte[1024];

istrread(data);

netdata = new String(data);

分析其中的netdata就是那！，有关cpu的可以类同实现！

通过JAVA来读取数字证书的方法获取20位指纹：

CAReadjava文件代码：

public class CARead extends JPanel {

private String CA_Name;

private String CA_ItemData[][] = new String[9][2];

private String[] columnNames = { "证书字段标记", "内容" };

public CARead(String CertName) {

CA_Name = CertName;

/ 三个Panel用来显示证书内容 /

JTabbedPane tabbedPane = new JTabbedPane();

JPanel panelNormal = new JPanel();

tabbedPaneaddTab("普通信息", panelNormal);

JPanel panelAll = new JPanel();

panelAllsetLayout(new BorderLayout());

tabbedPaneaddTab("所有信息", panelAll);

JPanel panelBase64 = new JPanel();

panelBase64setLayout(new BorderLayout());

tabbedPaneaddTab("Base64编码形式的信息", panelBase64);

/ 读取证书常规信息 /

Read_Normal(panelNormal);

/ 读取证书文件字符串表示内容 /

Read_Bin(panelAll);

/ 以Base64编码形式读取证书文件的信息 /

Read_Raw(panelBase64);

tabbedPanesetSelectedIndex(0);

setLayout(new GridLayout(1, 1));

add(tabbedPane);

}

private int Read_Normal(JPanel panel) {

String Field;

try {

CertificateFactory certificate_factory = CertificateFactory

getInstance("X509");

FileInputStream file_inputstream = new FileInputStream(CA_Name);

X509Certificate x509certificate = (X509Certificate) certificate_factory

generateCertificate(file_inputstream);

Field = x509certificategetType();

CA_ItemData[0][0] = "类型";

CA_ItemData[0][1] = Field;

Field = IntegertoString(x509certificategetVersion());

CA_ItemData[1][0] = "版本";

CA_ItemData[1][1] = Field;

Field = x509certificategetSubjectDN()getName();

CA_ItemData[2][0] = "标题";

CA_ItemData[2][1] = Field;

Field=x509certificategetNotBefore()toString();//得到开始有效日期

CA_ItemData[3][0] = "开始有效日期";

CA_ItemData[3][1] = Field;

Field=x509certificate getNotAfter()toString();//得到截止日期

CA_ItemData[4][0] = "截止日期";

CA_ItemData[4][1] = Field;

Field=x509certificategetSerialNumber()toString(16);//得到序列号

CA_ItemData[5][0] = "序列号";

CA_ItemData[5][1] = Field;

Field=x509certificategetIssuerDN()getName();//得到发行者名

CA_ItemData[6][0] = "发行者名";

CA_ItemData[6][1] = Field;

Field=x509certificategetSigAlgName();//得到签名算法

CA_ItemData[7][0] = "签名算法";

CA_ItemData[7][1] = Field;

Field=x509certificategetPublicKey()getAlgorithm();//得到公钥算法

CA_ItemData[8][0] = "公钥算法";

CA_ItemData[8][1] = Field;

//关闭输入流对象

file_inputstreamclose();

final JTable table = new JTable(CA_ItemData, columnNames);

TableColumn tc = null; //表格列控制

tc = tablegetColumnModel()getColumn(1);//得到表头

tcsetPreferredWidth(600);//设置宽度

paneladd(table);//增加到布局面板

} catch (Exception exception) {

exceptionprintStackTrace(); //异常捕获、

return -1;

}

return 0;

}

//读取二进制指纹文件

private int Read_Bin(JPanel panel) {

try {

FileInputStream file_inputstream = new FileInputStream(CA_Name);

DataInputStream data_inputstream = new DataInputStream(

file_inputstream);

CertificateFactory certificatefactory = CertificateFactory

getInstance("X509");

byte[] bytes = new byte[data_inputstreamavailable()];

data_inputstreamreadFully(bytes);

ByteArrayInputStream bais = new ByteArrayInputStream(bytes);

JEditorPane Cert_EditorPane;

Cert_EditorPane = new JEditorPane();

X509Certificate cert=null;

//遍历得到所有的证书属性

if (baisavailable() > 0)

{

cert = (X509Certificate) certificatefactory generateCertificate(bais);

Cert_EditorPanesetText(certtoString());

}

Cert_EditorPanedisable();

JScrollPane edit_scroll = new JScrollPane(Cert_EditorPane);

paneladd(edit_scroll);

file_inputstreamclose();

data_inputstreamclose();

} catch (Exception exception) {

exceptionprintStackTrace();

return -1;

}

return 0;

}

private int Read_Raw(JPanel panel) {

try {

JEditorPane Cert_EditorPane = new JEditorPane();

StringBuffer strBuffer =new StringBuffer();

File inputFile = new File(CA_Name);

FileReader in = new FileReader(inputFile);

char[] buf = new char[2000];

int len = inread(buf, 0, 2000);

for (int i = 1; i < len; i++) {

strBufferappend(buf[i]);

}

inclose();

Cert_EditorPanesetText(strBuffertoString());

Cert_EditorPanedisable();

JScrollPane edit_scroll = new JScrollPane(Cert_EditorPane);

paneladd(edit_scroll);

} catch (Exception exception) {

exceptionprintStackTrace();

return -1;

}

return 0;

}

}

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