不是都 一样吗?import java.security.*;
import java.security.cert.X509Certificate;
import java.io.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.lang.*;
import com.newman.io.FileReadWrite;
/**
* PBE算法
*
* <p>Title: newman的类库</p>
* <p>Description: 没有最好只有更好</p>
* <p>Copyright: Copyright (c) 2002</p>
* <p>Company: [email protected]</p>
* @author newman0708
* @version 1.0
*/
public class PBE{
private String m_Password;
private final String SECRETKEYFACTORY= "PBEWithMD5AndDES";
private byte[] m_Salt = {
(byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
(byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
};
private PBEKeySpec m_pbeKeySpec=null;
private SecretKeyFactory m_keyFac=null;
private SecretKey m_pbeKey=null;
private PBEParameterSpec m_pbeParamSpec=null;
private Cipher m_pbeCipher=null;
private int m_Count = 2;//???
public PBE(String password){
this.setPassword(password);
init();
}
public void setPassword(String password){
this.m_Password =password;
}
private void init(){
try {
this.m_pbeKeySpec = new PBEKeySpec(this.m_Password.toCharArray());
this.m_keyFac = SecretKeyFactory.getInstance(this.SECRETKEYFACTORY);
this.m_pbeKey = this.m_keyFac.generateSecret(this.m_pbeKeySpec);
// 生成pbe算法所需的参数对象,两个参数详见 RSA的 PKCS #5 标准
this.m_pbeParamSpec = new PBEParameterSpec(this.m_Salt, this.m_Count);
// 生成一个加密器
this.m_pbeCipher= Cipher.getInstance(this.SECRETKEYFACTORY);
}
catch (Exception ex) {
}
}
public byte[] encode(byte[] info){
if(info==null)
return null;
try{
// 初始化加密器
this.m_pbeCipher.init(Cipher.ENCRYPT_MODE,this.m_pbeKey,this.m_pbeParamSpec);
// 明文
byte[] cleartext = info;
// 加密
byte[] ciphertext = this.m_pbeCipher.doFinal(cleartext);
System.out.println("*********************");
System.out.println("加密后");
for (int i = 0 ;i<ciphertext.length ;i++){
System.out.println(ciphertext[i]);
}
System.out.println("*********************");
//返回密文
return ciphertext;
}
catch (Exception e){
System.out.println(e);
return null;
}
}
public byte[] decode(byte[] info){
if(info==null)
return null;
try{
// 初始化加密器
this.m_pbeCipher.init(Cipher.DECRYPT_MODE,this.m_pbeKey, this.m_pbeParamSpec);
// 密文
byte[] ciphertext = info;
System.out.println("*********************");
System.out.println("解密前");
for (int i = 0 ;i<ciphertext.length ;i++){
System.out.println(ciphertext[i]);
}
System.out.println("*********************");
// 解密
byte[] cleartext = this.m_pbeCipher.doFinal(ciphertext);
//返回明文
return cleartext;
}
catch (Exception e){
System.out.println(e);
return null;
}
}
public InputStream getInputStream(InputStream is) throws IOException {
try {
this.m_pbeCipher.init(Cipher.DECRYPT_MODE,this.m_pbeKey, this.m_pbeParamSpec);
CipherInputStream cis = new CipherInputStream(is, this.m_pbeCipher);
return cis;
}
catch (Exception ex) {
return null;
}
}
public OutputStream getOutputStream(OutputStream os) throws IOException {
try {
this.m_pbeCipher.init(Cipher.ENCRYPT_MODE,this.m_pbeKey,this.m_pbeParamSpec);
CipherOutputStream cos = new CipherOutputStream(os, this.m_pbeCipher);
return cos;
}
catch (Exception ex) {
System.err.println("error: getOutputStream");
return null;
}
}
public void writeFile(OutputStream os,String content){
try {
OutputStream os2=this.getOutputStream(os);
byte[] tom=content.getBytes();
System.out.println("byte("+tom.length +"): "+new String(tom));
os2.write(content.getBytes());
}
catch (Exception ex) {
}
}
public void PRINT(InputStream inputStream){
try {
int nEnd=128;
byte[] byteTom=new byte[nEnd];
int nCount=0;
//StringBuffer bufftext=new StringBuffer();
InputStream is=this.getInputStream(inputStream);
System.out.println("following is from is");
while((nCount=is.read(byteTom))!=-1){
String s=new String (byteTom);
System.out.println(s);
}
is.close ();
}
catch (Exception ex) {
System.err.println("ERROR: "+ex.toString());
}
}
public static void main(String[] args) throws Exception{
/*
PBE PBE1 = new PBE("newman0708");
byte[] en_string,de_string;
String content="Description: author [email protected]";//41
String content2="Description: 没有最好只有更好";//29
en_string = PBE1.encode(content2.getBytes());
de_string = PBE1.decode(en_string);
System.out.println("en_string: "+new String (en_string));
System.out.println("de_string: "+new String (de_string));
*/
PBE PBE1 = new PBE("newman0708");
String content="Description: author [email protected]";//41
String content2="Description: 没有最好只有更好";//29
FileOutputStream bw =new FileOutputStream("f://foo.txt");
PBE1.writeFile(bw,content);
BufferedInputStream br =new BufferedInputStream(new FileInputStream("f://foo.txt"));
PBE1.PRINT(br);
}
}/*
*********************
加密后
113
-89
-55
-60
-122
-94
76
-122
36
114
-121
3
6
38
-22
-61
10
-110
23
115
-45
-81
-62
-75
111
-73
93
60
-23
80
100
-128
*********************
*********************
解密前
113
-89
-55
-60
-122
-94
76
-122
36
114
-121
3
6
38
-22
-61
10
-110
23
115
-45
-81
-62
-75
111
-73
93
60
-23
80
100
-128
*********************
en_string:
de_string: Description: 没有最好只有更好
*/
import java.security.cert.X509Certificate;
import java.io.*;
import javax.crypto.*;
import javax.crypto.spec.*;
import java.lang.*;
import com.newman.io.FileReadWrite;
/**
* PBE算法
*
* <p>Title: newman的类库</p>
* <p>Description: 没有最好只有更好</p>
* <p>Copyright: Copyright (c) 2002</p>
* <p>Company: [email protected]</p>
* @author newman0708
* @version 1.0
*/
public class PBE{
private String m_Password;
private final String SECRETKEYFACTORY= "PBEWithMD5AndDES";
private byte[] m_Salt = {
(byte)0xc7, (byte)0x73, (byte)0x21, (byte)0x8c,
(byte)0x7e, (byte)0xc8, (byte)0xee, (byte)0x99
};
private PBEKeySpec m_pbeKeySpec=null;
private SecretKeyFactory m_keyFac=null;
private SecretKey m_pbeKey=null;
private PBEParameterSpec m_pbeParamSpec=null;
private Cipher m_pbeCipher=null;
private int m_Count = 2;//???
public PBE(String password){
this.setPassword(password);
init();
}
public void setPassword(String password){
this.m_Password =password;
}
private void init(){
try {
this.m_pbeKeySpec = new PBEKeySpec(this.m_Password.toCharArray());
this.m_keyFac = SecretKeyFactory.getInstance(this.SECRETKEYFACTORY);
this.m_pbeKey = this.m_keyFac.generateSecret(this.m_pbeKeySpec);
// 生成pbe算法所需的参数对象,两个参数详见 RSA的 PKCS #5 标准
this.m_pbeParamSpec = new PBEParameterSpec(this.m_Salt, this.m_Count);
// 生成一个加密器
this.m_pbeCipher= Cipher.getInstance(this.SECRETKEYFACTORY);
}
catch (Exception ex) {
}
}
public byte[] encode(byte[] info){
if(info==null)
return null;
try{
// 初始化加密器
this.m_pbeCipher.init(Cipher.ENCRYPT_MODE,this.m_pbeKey,this.m_pbeParamSpec);
// 明文
byte[] cleartext = info;
// 加密
byte[] ciphertext = this.m_pbeCipher.doFinal(cleartext);
System.out.println("*********************");
System.out.println("加密后");
for (int i = 0 ;i<ciphertext.length ;i++){
System.out.println(ciphertext[i]);
}
System.out.println("*********************");
//返回密文
return ciphertext;
}
catch (Exception e){
System.out.println(e);
return null;
}
}
public byte[] decode(byte[] info){
if(info==null)
return null;
try{
// 初始化加密器
this.m_pbeCipher.init(Cipher.DECRYPT_MODE,this.m_pbeKey, this.m_pbeParamSpec);
// 密文
byte[] ciphertext = info;
System.out.println("*********************");
System.out.println("解密前");
for (int i = 0 ;i<ciphertext.length ;i++){
System.out.println(ciphertext[i]);
}
System.out.println("*********************");
// 解密
byte[] cleartext = this.m_pbeCipher.doFinal(ciphertext);
//返回明文
return cleartext;
}
catch (Exception e){
System.out.println(e);
return null;
}
}
public InputStream getInputStream(InputStream is) throws IOException {
try {
this.m_pbeCipher.init(Cipher.DECRYPT_MODE,this.m_pbeKey, this.m_pbeParamSpec);
CipherInputStream cis = new CipherInputStream(is, this.m_pbeCipher);
return cis;
}
catch (Exception ex) {
return null;
}
}
public OutputStream getOutputStream(OutputStream os) throws IOException {
try {
this.m_pbeCipher.init(Cipher.ENCRYPT_MODE,this.m_pbeKey,this.m_pbeParamSpec);
CipherOutputStream cos = new CipherOutputStream(os, this.m_pbeCipher);
return cos;
}
catch (Exception ex) {
System.err.println("error: getOutputStream");
return null;
}
}
public void writeFile(OutputStream os,String content){
try {
OutputStream os2=this.getOutputStream(os);
byte[] tom=content.getBytes();
System.out.println("byte("+tom.length +"): "+new String(tom));
os2.write(content.getBytes());
}
catch (Exception ex) {
}
}
public void PRINT(InputStream inputStream){
try {
int nEnd=128;
byte[] byteTom=new byte[nEnd];
int nCount=0;
//StringBuffer bufftext=new StringBuffer();
InputStream is=this.getInputStream(inputStream);
System.out.println("following is from is");
while((nCount=is.read(byteTom))!=-1){
String s=new String (byteTom);
System.out.println(s);
}
is.close ();
}
catch (Exception ex) {
System.err.println("ERROR: "+ex.toString());
}
}
public static void main(String[] args) throws Exception{
/*
PBE PBE1 = new PBE("newman0708");
byte[] en_string,de_string;
String content="Description: author [email protected]";//41
String content2="Description: 没有最好只有更好";//29
en_string = PBE1.encode(content2.getBytes());
de_string = PBE1.decode(en_string);
System.out.println("en_string: "+new String (en_string));
System.out.println("de_string: "+new String (de_string));
*/
PBE PBE1 = new PBE("newman0708");
String content="Description: author [email protected]";//41
String content2="Description: 没有最好只有更好";//29
FileOutputStream bw =new FileOutputStream("f://foo.txt");
PBE1.writeFile(bw,content);
BufferedInputStream br =new BufferedInputStream(new FileInputStream("f://foo.txt"));
PBE1.PRINT(br);
}
}/*
*********************
加密后
113
-89
-55
-60
-122
-94
76
-122
36
114
-121
3
6
38
-22
-61
10
-110
23
115
-45
-81
-62
-75
111
-73
93
60
-23
80
100
-128
*********************
*********************
解密前
113
-89
-55
-60
-122
-94
76
-122
36
114
-121
3
6
38
-22
-61
10
-110
23
115
-45
-81
-62
-75
111
-73
93
60
-23
80
100
-128
*********************
en_string:
de_string: Description: 没有最好只有更好
*/
解决方案 »
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