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pki javaÏà¹Ø´úÂë²Î¿¼

keytool -genkey -dname "CN=demo, OU=softDept, O=company,
L=puddong,S=shanghai, C=cn" -alias demo -keyalg RSA -keysize 1024
-keystore demoKeystore -validity 3650 -storepass storePwd -keypass
demoPwd
Éú³É±£´æ¹«Ô¿ºÍ˽ԿµÄÃÜÔ¿²Ö¿â£¬±£´æÔÚdemoKeystoreÎļþÖС£ÕâÀïstorepass ºÍ keypass
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keytool -export -alias demo -keystore demoKeystore -rfc -file
demo.cer //´ÓÃÜÔ¿²Ö¿âÖе¼³ö±£´æ¹«Ô¿µÄÖ¤Êé
ÊäÈëkeypass ¼´demoPwd 
  try{     
   //
ÃÜÔ¿²Ö¿â
   KeyStore ks = KeyStore.getInstance("JKS");
//¶ÁÈ¡ÃÜÔ¿²Ö¿â
   FileInputStream
ksfis = new FileInputStream("demoKeystore");
   BufferedInputStream
ksbufin = new BufferedInputStream(ksfis);
   char[] storePwd =
"storePwd".toCharArray();
   ks.load(ksbufin, storePwd);
   ksbufin.close();
   char[]
keyPwd = "demoPwd".toCharArray();
//´ÓÃÜÔ¿²Ö¿âµÃµ½Ë½Ô¿
   PrivateKey priK =
(PrivateKey) ks.getKey("demo", keyPwd);  
//Éú³Écipher
   Cipher
cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding",new
org.bouncycastle.jce.provider.BouncyCastleProvider());
//ÓÃ˽Կ³õʼ»¯cipher
   cipher.init(Cipher.ENCRYPT_MODE,
priK);
   byte[] plain = "This is plain text".getBytes("UTF-8");
   
   //
ÒòΪÓõÄ1024λrsaËã·¨£¬Ò»´ÎÖ»ÄܼÓÃÜ1024/8-11×Ö½ÚÊý¾Ý£¬·Ö¿ª¼ÓÃÜ
   byte[] code = new
byte[(((plain.length-1)/117+1))*128];  
            int ixplain = 0;
           
int ixcode = 0;
            while((plain.len


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java web¹ýÂËÆ÷

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 1 н¨Ò»¸öÀà Encoding Filter   
package cn.bupt.duming.util;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.se ......

java»ñȡϵͳ±àÂë

ÓÉÓÚJDKÊǹú¼Ê°æµÄ£¬ÔÚ±àÒëµÄʱºò£¬Èç¹ûÎÒÃÇûÓÐÓÃ-encoding²ÎÊýÖ¸¶¨ÎÒÃǵÄJAVAÔ´³ÌÐòµÄ±àÂë¸ñʽ£¬Ôòjavac.exeÊ×ÏÈ»ñµÃÎÒÃDzÙ×÷ϵͳĬÈϲÉÓõıàÂë¸ñʽ£¬Ò²¼´ÔÚ±àÒëjava³ÌÐòʱ£¬ÈôÎÒÃDz»Ö¸¶¨Ô´³ÌÐòÎļþµÄ±àÂë¸ñʽ£¬JDKÊ×ÏÈ»ñµÃ²Ù×÷ϵͳµÄfile.encoding²ÎÊý(Ëü±£´æµÄ¾ÍÊDzÙ×÷ϵͳĬÈϵıàÂë¸ñʽ£¬ÈçWIN2k£¬ËüµÄֵΪGBK)£¬È»º ......

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package script;
import java.io.File;
import java.io.IOException;
public class Realname {
 public static void main(String[] args) throws IOException
 {
 
  File oldFile = new File("d:/PMS");
  if(!oldFile.exists())
  {
   oldFile. ......

java zip ½âѹËõ

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.logging.Logger; ......
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