/*
* Encrypt 字符串加密
*
* @author shiwei 2004-8-28
*/
package com.snoics.base.util;
/**
* Encrypt 字符串加密
* @author shiwei
*
*/
public class Encrypt {
public Encrypt() {
}
/**
* 加密字符串
* @param encryptstring
* @return String
*/
public static String encrypt(String encryptstring){
String newstring="";
if(encryptstring.length()<1){
return encryptstring;
}else{
String tempstring=StringClass.remove(encryptstring,0,(int)(encryptstring.length()/3));
tempstring=StringClass.getConvertString(tempstring);
encryptstring=StringClass.getConvertString(encryptstring);
newstring=encrypt(encryptstring,tempstring);
return newstring;
}
}
/**
* 普通加密字符串
*
* @param encryptstring1
* @param encryptstring2
* @return String
*/
public static String encrypt(String encryptstring1, String encryptstring2) {
int strcount = 0; //字符串ASCII碼的總和
int newpasswordlength = 0; //生成的密碼長度
int seed1 = 0; //種子
int seed2 = 0;
String str = "";
String newpassword = ""; //生成的密碼
char newchar;
int newcharint = 0;
int thechar = 0;
str = encryptstring2 + encryptstring1;
if (str.length() > 0) {
for (int i = 0; i < str.length(); i++) {
strcount = strcount + str.charAt(i);
}
newpasswordlength = (strcount * strcount) / str.length() + str.length();
int temp = 0;
int temp2 = 0;
while ((newpasswordlength <= 0) || (newpasswordlength > 100)) {
temp = temp + str.length();
temp2 = temp + temp2;
newpasswordlength = 100;
}
for (int i = 0; i < encryptstring1.length(); i++) {
seed1 = seed1 + encryptstring1.charAt(i);
}
for (int i = 0; i < encryptstring2.length(); i++) {
seed2 = seed2 + encryptstring2.charAt(i);
}
for (int i = 0; i < newpasswordlength; i++) {
if (i < str.length()) {
thechar = str.charAt(i);
} else {
thechar = str.charAt(i % (str.length() - 1))
+ str.charAt((str.length() - 1)
- (i % str.length()));
}
newcharint = thechar * (seed1 * (i + 1) + thechar);
newcharint = newString(newcharint);
newcharint = thechar * (seed2 * (i + 1) + thechar);
newcharint = newString(newcharint);
newchar = (char) newcharint;
newpassword = newpassword + String.valueOf(newchar);
}
newpassword = newpassword.substring((encryptstring2.length() + encryptstring1.length()) % 100);
return (newpassword);
} else {
return ("空字符串不能被加密");
}
}
private static int newString(int charint) {
while ((charint > 127) || (charint < 32)) {
while (charint > 127) {
charint = (charint - charint/2+1) / 2;
while(charint==60||charint==62||charint==34||charint==32||charint==39){
charint = charint + 1;
}
}
while (charint < 32) {
charint = (charint + charint/2-1) * 2;
while(charint==60||charint==62||charint==34||charint==32||charint==39){
charint = charint + 1;
}
}
}
return (charint);
}
public static void main(String[] args) {
String theusername = "1abc1";
String thepassword = "1def1";
String theusername1 = "1def1";
String thepassword1 = "1abc1";
String newstring=Encrypt.encrypt(theusername,thepassword);
System.out.println("newstring="+newstring);
String newstringa=Encrypt.encrypt(theusername1,thepassword1);
System.out.println("newstringa="+newstringa);
String newstring2=Encrypt.encrypt(newstring);
System.out.println("newstring2="+newstring2);
String newstring3=Encrypt.encrypt(newstring2);
System.out.println("newstring3="+newstring3);
}
}
執行結果:
newstring=*?C4%;V[GKOoUX[_#i%ptvy)!!#01&c(46*o;=?y{?AB#4HI7%7LM:==U?@?AXBZFGHH`IJKfgO4QlmR7qrt::wxz=
newstringa=(=A4$;TYDHLmTW[_#d#kpvx*!#-/$a(56)m89;vy@AB!2DE4$7LN::;P==?AYBXCDEE^IJKceL3NikR6opq89uvw;
newstring2=ij887i)54)?!@A!!!Ab##eBf##ddd#efff#b#cadc#bc_!!]@
newstring3=(qI}!+A!#z%%4?((