Java简单的加密解密算法，使用异或运算
实例1：
package cn.std.util;import java.nio.charset.Charset;public class DeEnCode {private static final String key0 = "FECOI()*&<MNCXZPKL";private static final Charset charset = Charset.forName("UTF-8");private static byte[] keyBytes = key0.getBytes(charset);public static String encode(String enc){byte[] b = enc.getBytes(charset);for (int i=0,size=b.length;i<size;i++){for (byte keyBytes0:keyBytes){b[i] = (byte) (b[i]^keyBytes0);}}return new String(b);}public static String decode(String dec){byte[] e = dec.getBytes(charset);byte[] dee = e;for (int i=0,size=e.length;i<size;i++){for (byte keyBytes0:keyBytes){e[i] = (byte) (dee[i]^keyBytes0);}}return new String(e);}public static void main(String[] args) {String s="you are right";String enc = encode(s);String dec = decode(enc);System.out.println(enc);System.out.println(dec);}}实例2
public static String setEncrypt(String str){String sn="ziyu";//密钥int[] snNum=new int[str.length()];String result="";String temp="";for (int i=0,j=0;i<str.length();i++,j++){if(j==sn.length()) j=0;snNum[i]=str.charAt(i)^sn.charAt(j);}for (int k=0;k<str.length();k++){if(snNum[k]<10){temp="00"+snNum[k];} else{if(snNum[k]<100){temp="0"+snNum[k];}}result+=temp;}return result;}public static String getEncrypt(String str){String sn="ziyu";//密钥char[] snNum=new char[str.length()/3];String result="";for (int i=0,j=0;i<str.length()/3;i++,j++){if(j==sn.length()) j=0;int n=Integer.parseint(str.substring(i*3,i*3+3));snNum[i]=(char)((char)n^sn.charAt(j));}for (int k=0;k<str.length()/3;k++){result+=snNum[k];}return result;}}总结
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